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4 th <strong>International</strong><br />
<strong>Summer</strong> <strong>School</strong><br />
September, 12-15 2011<br />
University Regensburg/Germany
4 th <strong>International</strong><br />
<strong>Summer</strong> <strong>School</strong><br />
We are grateful for the financial support from the following<br />
institutions:<br />
Universitätsstiftung Hans Vielberth<br />
Bayerisches Hochschulzentrum für<br />
Mittel-, Ost- und Südosteuropa<br />
Universität Regensburg<br />
Forschungsrat UR<br />
VolkswagenStiftung<br />
FCI Fond der chemischen Industrie
4 th<br />
<strong>International</strong> <strong>Summer</strong> <strong>School</strong><br />
“Supramolecular Systems in Chemistry and Biology”<br />
<strong>PROGRAM</strong><br />
September, 12-15 2011, Regensburg (Germany)<br />
Monday, September 12 th<br />
10 am – 2 pm Registration of Participants (Chemistry Building)<br />
2 – 2.30 pm Welcome Address<br />
2.30 – 4 pm Session I (Functional Supramolecular Systems)<br />
Chair: Vitaly Kalchenko<br />
Opening lecture 2.30 – 3.30 pm David Reinhoudt, Twente, The Netherlands (L1)<br />
4.15 – 4.45 pm Coffee Break<br />
“From Supramolecular Chemistry to<br />
Nanofabrication”<br />
3.30 – 4 pm Aslan Tsivadze, Moscow, Russian Fed. (L2)<br />
“Innovative Developments on the Basis of<br />
Supramolecular Systems”<br />
4 – 4.15 pm Benjamin Gruber, Regensburg, Germany (ST1)<br />
“Synthetic Vesicle Membranes: Molecular<br />
Recognition and Reactivity at the Interface”
4.45 – 6.15 pm Session II (Inclusion Compounds I)<br />
Chair: Alexandre Varnek<br />
4.45 – 5.15 pm Igor Antipin, Kazan, Russian Fed. (L3)<br />
„Calixarenes: From Molecular Receptor to<br />
Supramolecular Systems“<br />
5.15 – 5.45 pm Jürgen Schatz, Erlangen, Germany (L4)<br />
„Metathesis in Water – A Case Study for<br />
Supramolecular Modification of Reactivity“<br />
5.45 – 6.15 pm Vladimir Král, Prague, Czech Republic (L5)<br />
“Controlled and Targeted Drug Delivery Using a<br />
Supramolecular System”<br />
6.15 – 6.30 pm Ivan Vatsouro, Moscow, Russian Fed. (ST2)<br />
“Novel Calixarene- and Biscalixarene Based<br />
Heteroditopic Receptors”<br />
7 – 8.30 pm Mix and Mingle – Barbeque and Beer
Tuesday, September 13 th<br />
9 – 10.30 am Session III (Bio-Inspired Systems)<br />
Chair: Aslan Tsivadze<br />
10.30 – 11 am Coffee Break<br />
9 – 9.30 am Carsten Schmuck, Essen, Germany (L6)<br />
„What does the Recognition of Biomolecules<br />
and Switchable Nanoassemblies have in<br />
Common? Interacting Molecules!<br />
9.30 – 10 am Sylvie Ferlay, Strasbourg, France (L7)<br />
“Variation around Charge-Assisted H-Bonded<br />
Molecular Networks”<br />
10 – 10.15 am Veronique Hubscher, Strasbourg, France (ST3)<br />
“Binding Properties of Calix[4]Arene-Amides<br />
and Thioamides and their Application in Ion<br />
Selective Electrodes”<br />
10.15 – 10.30 am Sergey Paramonov, Moscow, Russian Fed. (ST4)<br />
11 – 12.30 am Session IV (Bio-Inspired Systems)<br />
Chair: Sabine Amslinger<br />
“Photo-Control of Binding Ability of Crown-<br />
Annelated Chromenes”<br />
11 – 11.30 am Piotr Bregestovsky, Marseille, France (L8)<br />
“Light and Molecular Design in Biological<br />
Applications”<br />
11.30 – 12 am Evgeny Kataev, Chemnitz, Germany (L9)<br />
“ Identification of Sensors and Recognition<br />
Mechanisms from Ligand-Metal-Analyte<br />
Libraries”
12.30 – 2.30 pm Lunch Break<br />
12 – 12.15 am Pascal Jonkheijm, Twente, The Netherlands<br />
(ST5)<br />
“Supramolecular protein immobilization”<br />
12.15 – 12.30 am Alexandr Shkrabak, Kyiv, Ukraine (ST6)<br />
“The Effect of Calixarene C-107 On Kinteic<br />
Characteristics Of Nа+,К+-АТРase Of<br />
Myometrium Plasma Membrane”<br />
2.30 – 4 pm Session V (Inclusion Compounds II)<br />
Chair: Vladimir Fedin<br />
4 – 4.30 pm Coffee Break<br />
2.30 – 3 pm Oren Scherman, Cambridge, United<br />
Kingdom (L10)<br />
“Cucurbiturils at the Interface between<br />
Supramolecular Chemistry and Materials<br />
Science”<br />
3 – 3.30 pm Vitaly Kalchenko, Kyiv, Ukraine (L11)<br />
“Supramolecular Chemistry of Calixarenes.<br />
Fundamental and Practical Aspects”<br />
3.30 – 3.45 pm Tim Reimers, Kiel, Germany (ST7)<br />
“Chiral Concave N-Heterocyclic Carbenes”<br />
3.45 – 4 pm Rustem Zairov, Kazan, Russian Fed. (ST8)<br />
“Europium(III) Doped Polyelectrolyte<br />
Nanocapsules. Collodial and Photophysical<br />
Properties”
4.30 – 5.30 pm Poster Short Talks (10 x 5 min Short Oral Presentations)<br />
Chair: Sylvie Ferlay / Julia Gorbunova<br />
Vladimir Burilov, Kazan, Russian Fed. (PT1)<br />
“The Sensing of Interfacial Interactions of Tb-Doped Silica<br />
Nanoparticles with Various Substrates through the "On Off-On"<br />
Switching of Tb-Centered Luminescence. Mechanisms and<br />
Applications.”<br />
Josè Augusto Berrocal, Rome, Italy (PT2)<br />
“Thermodynamic Template Effect in Dynamic Combinatorial<br />
Chemistry"<br />
Alexander Gerasimov, Kazan, Russian Fed. (PT3)<br />
“Molecular Recognition of Organic Quests by Thin Layers of<br />
Phosphorous-Containing Dendrimers”<br />
Oleksandr Zaichenko, Lviv, Ukraine (PT4)<br />
"Bioactive Nanoscale Supramolecular Assemblies of Ionic and Non<br />
Ionic Oligoperoxide Based Surfactants with Drugs, DNA and RNA in<br />
Water”<br />
Alexander Martynov, Moscow, Russian Fed. (PT5)<br />
“Towards a Molecular Assembly Based on 1,10-Phenanthroline-<br />
Functionalized Phthalocyanines”<br />
Kerstin Anhuth, Duisburg-Essen, Germany (PT6)<br />
"Metallosupramolecular Polymers with Orthogonal Interactions”<br />
Maxim Oshchepkov, Moscow, Russian Fed. (PT7)<br />
“Analysis of Benzodiazacrown-15-crown-5 Ether Derivative<br />
Binding Properties by Potentiometric, Optical and Extraction<br />
Methods”<br />
Kajetan Dabrowa, Warsaw, Poland (PT8)<br />
„Novel Photoresponsible Anion Receptors“<br />
Artem Smolentsev, Novosibirsk, Russian Fed. (PT9)<br />
"Crown-Containing Derivatives of Naphthopyrans:Cation Binding,<br />
Photochemical and Fluorescent Properties“<br />
Alena Yantemirova, Kazan, Russian Fed. (PT10)<br />
"Thiacalix[4]Arenes: Synthesis and Molecular Recognition of some<br />
Anions”<br />
5.30 – 8 pm Posters with Bavarian Food, Beer and Pretzels
Wednesday, September 14 th<br />
9 – 10.30 am Session VI (Functional Supramolecular Systems I)<br />
Chair: Mir Wais Hosseini<br />
10.30 – 11 am Coffee Break<br />
9 – 9.30 am Lechoslaw Latos-Grazynski, Warsaw,<br />
Poland (L12)<br />
“Aromaticity Switching in Porphyrinoids and<br />
Heteroporphyrinoids”<br />
9.30 – 10 am Emmanuel Cadot, Versailles, France (L13)<br />
“Rings and Capsules: Supramolecular Systems<br />
based on the Mo2O2S2 Linker”<br />
10 – 10.15 am Ina Krebs, Duisburg-Essen, Germany (ST9)<br />
“Zwitterion-Chromophore Modules for White<br />
Light Emitting Supramolecular Polymers”<br />
10.15 – 10.30 am Pavel Panchenko, Moscow, Russian Fed. (ST10)<br />
“Synthesis and Cation-Dependent Photophysical<br />
Properties of Crown Containing 1,8<br />
Naphthalimide Derivatives”<br />
11 – 11.30 am Alexandre Varnek, Strasbourg, France (L14)<br />
“Chemoinformatics Approaches to Virtual<br />
Screening and in Silico Design”<br />
11.30 – 12.30 am Session VII (Young Scientist Competition)<br />
12.30 – 2.30 pm Lunch Break<br />
Chair: Burkhard König / Kirsten Zeitler<br />
National teams of participating young scientists will compete in<br />
scientific challenges
2.30 – 4 pm Session VIII (Inorganic Self-Assembly)<br />
Chair: Oliver Reiser<br />
2.30 pm – 3 pm Vladimir Fedin, Novosibirsk, Russian Fed. (L15)<br />
“Mikro- and Mesoporous Coordination<br />
Polymers: Synthesis, Structure and Properties”<br />
3 pm – 3.30 pm Manfred Scheer, Regensburg, Germany (L16)<br />
“Phosphorous Ligands in Supramolecular<br />
Chemistry”<br />
3.30 – 3.45 pm Sébastian Floquet, Versailles, France (ST11)<br />
“Synthesis, Characterizations and Applications<br />
of Cyclic Oxothiomolybdenum Rings”<br />
3.45 – 4 pm Elisabeth Isaak, Aachen, Germany (ST12)<br />
“Lithium-Controlled Hierachical Assembly of<br />
Ti(IV) Helicates”<br />
4 – 5 pm Individual Transfer to Historic City Center<br />
5 – 6.30 pm Guided City Tour<br />
7 pm Conference Dinner
Thursday, September 15<br />
th<br />
9 – 10.30 am Session IX (Functional Supramolecular Systems II)<br />
Chair: Igor Antipin<br />
10.30 – 11 am Coffee Break<br />
9 – 9.30 am Julia Gorbunova, Moscow, Russian Fed. (L17)<br />
“Advances in the Supramolecular Chemistry of<br />
Tetrapyrrolic Compounds”<br />
9.30 – 10.15 am Luisa De Cola, Münster, Germany (L18)<br />
“Self-Assembly for the Creation of New<br />
(Electro)Luminescent Materials”<br />
10.15 – 10.30 am Pawel Dydio, Amsterdam, The Netherlands<br />
(ST13)<br />
“Supramolecular Control of Catalyst Selectivity<br />
in the Hydroformulation”<br />
11 – 12.30 am Session X (Self-Assembly, Self-Organization)<br />
Chair: Carsten Schmuck<br />
11 – 11.15 am Roman Rodik, Kyiv, Ukraine (ST14)<br />
“Cationic Amphiphilic Calixarenes: Self-<br />
Assembly in Water Solutions and Virus-Sized<br />
DNA Nanoparticles”<br />
11.15 – 11.30 am Artemiy Mizerev, Moscow, Russian Fed. (ST15)<br />
“Synthesis and Investigation of Complexing,<br />
Optical and Electrochemical Activities of Crown-<br />
Containing Oligothiophene Derivatives”
11.30 – 12.00 am Olga Federova, Moscow, Russian Fed. (L19)<br />
“Supramolecular Devices Based on<br />
Photoresponsive Assemblies of Cucurbit[7]uril<br />
and Crown-Ether Derived Styryl and (Bis)styryl<br />
Dyes”<br />
12 – 12.30 am Mir Wais Hosseini, Strasbourg, France (L20)<br />
„Molecular Tectonics: Design of<br />
Enantiomerically Pure Tubular Crystals”<br />
1 pm Closing Remarks, Departure, Optional Lunch<br />
End of the <strong>Summer</strong> <strong>School</strong>
From supramolecular chemistry to nanofabrication<br />
D.N. Reinhoudt<br />
Laboratory for Supramolecular Chemistry and Technology<br />
MESA+ Institute for Nanotechnology<br />
University of Twente<br />
The Netherlands<br />
Like in microelectronics, the fabrication of nanomaterials and -devices will<br />
most likely start with the patterning of surfaces at the nanoscale. Individual<br />
nanostructures can be manufactured most easily when confined to a surface.<br />
Host-guest systems have been developed that make use of supramolecular<br />
chemistry in water. Nanopatterning on self-assembled monolayers of βcyclodextrine<br />
receptors (molecular printboards) can be achieved by<br />
supramolecular nano-imprint lithography or DPN nanolithography.<br />
Using the concept of multivalency, molecules can be anchored permanently or<br />
in a dynamic regime. Several examples of the immobilization of biomolecules<br />
at such surfaces will be discussed.<br />
A second way to pattern surfaces uses dynamic covalent chemistry. This<br />
methodology has the same advantages as supramolecular patterning, but can<br />
easily be combined with irreversible confinement, e.g. by reduction of an imine<br />
linker. The patterning of surfaces with proteins that selectively recognize<br />
cancer cells will be discussed. In this work it was discovered that under<br />
conditions of microcontact printing or dip pen nanolithography ,covalent<br />
reactions are much faster than from solution.<br />
This observation has been used in click chemistry at surfaces and applied for<br />
the generation of DNA arrays.
INNOVATIVE DEVELOPMENTS ON THE BASIS OF SUPRAMOLECULAR SYSTEMS<br />
A.Yu. Tsivadze<br />
A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences,<br />
Leninsky Pr., 31/4, Moscow 119907 Russia, tsiv@phyche.ac.ru<br />
Last years become more and more obvious that for developments of innovative technologies<br />
on the basis of new classes of compounds it is necessary to reveal their features of supramolecular<br />
organization. Many of important electrophysical, optical and sensor properties depend from<br />
peculiarities of such organization. Supramolecular systems on a basis of metal complexes with<br />
macrocyclic ligands possess unique physico-chemical properties allow to develop various unique<br />
materials for the molecular electronics, alternative power industry, chemical technology, separation<br />
of compounds, medicine. For creation of innovative technologies on the basis of the compounds it<br />
is necessary to reveal their supramolecular organization depending on the various factors defining<br />
important properties.<br />
On the basis of the synthesized new classes of macrocyclic compounds are developed:<br />
− electroluminescent materials and organic light-emitting diodes on their basis;<br />
− photorefractive materials;<br />
− electrocatalysts and fuel cells on their basis;<br />
− extraction and sorption technologies for separation of isotopes and processing of radioactive<br />
production wastes.<br />
− organic solar cells.<br />
Innovative problems on a way of application of the results of fundamental researches will be<br />
discussed.
Synthetic vesicle membranes: Molecular recognition and reactivity at<br />
the interface<br />
Benjamin Gruber, Burkhard König*<br />
University of Regensburg, Universitätsstraße 31, 93053 Regensburg<br />
*e-mail: burkhard.koenig@chemie.uni-regensburg.de<br />
Many fundamental biological processes take place at the membrane-water interface of<br />
cells and involve membrane-proteins that act as receptors for external signaling<br />
molecules or catalyze enzymatic reactions. Here we present some of our recent studies<br />
about artificial receptors embedded in synthetic vesicle membranes [1-2] and vesicular<br />
metal complexes promoting the hydrolysis of phosphodiester substrates. [3]<br />
Figure 1. Vesicle membrane embedding of receptors and dyes for self-assembled<br />
chemosensors (left) and metal catalysts for the cleavage of phosphodiesters (right).<br />
____________________<br />
[1] B. Gruber, S. Stadlbauer, K. Woinaroschy, B. König, Org. Biomol. Chem. 2010, 8,<br />
3704.<br />
[2] B. Gruber, S. Stadlbauer, A. Späth, S. Weiss, M. Kalinina, B. König, Angew. Chem.<br />
Int. Ed. 2010, 49, 7125.<br />
[3] M. Subat, K. Woinaroschy, C. Gerstl, B. Sarkar, W. Kaim, B. König, Inorg. Chem.<br />
2008, 47, 4661.
Calixarenes: from molecular receptor to supramolecular systems<br />
I.S.Antipin a,b , S.E. Soloveva a , I.I.Stoikov b , A.I.Konovalov a,b<br />
a A.E.Arbuzov Institute of Organic & Physical Chemistry, 420088, Kazan, Russia,<br />
Arbuzov str., 8. , b Kazan (Volga region) Federal University, 420008, Kazan, Russia,<br />
Kremlevskaya str. 18, E-mail: iantipin@ksu.ru<br />
Now one of the most perspective ways of the nanomaterials design is the "bottom-up"<br />
technology in which the higher organized nanosystems are spontaneously formed due to<br />
supramolecular self-organization and self-assembly from individual atoms and<br />
molecules. A key element of supramolecular chemistry is the principle of the molecular<br />
recognition. From this point of view, one of the actual problems of supramolecular<br />
chemistry is the molecular design and synthesis of preorganized receptor and<br />
amphiphilic molecules which are capable on the principles of molecular recognition and<br />
multipoint interactions to form host-guest complexes as well as self-organized<br />
supramolecular essembles and devices.<br />
Nanotechnological approach "bottom-up" can be effectively implemented on the basis<br />
of meta-cyclophanes: calix[4]arene 1, thiacalix[4]arene 2.<br />
(1) (2) X= O, S, NH<br />
Stereo and chemoselective functionalization of calix[4]arene platforms allows to change<br />
significantly hydrophilic-lipophilic properties of macrocycles and to raise efficiency and<br />
selectivity of the interaction with substrates. The regularities of aggregation and<br />
complexation of calixarenes with substrates of different nature: non-electrolytes,<br />
cations, anions will be discussed. Particular attention will be paid to the application of<br />
calixarene derivatives for the construction of various supramolecular and nanosystems,<br />
devices and "smart" materials: nanoparticles, metal-coordinated networks, Langmuir-<br />
Blodgett nanolayers etc.<br />
The support from RFBR (N 10-03-00728) is gratefully acknowledged.
Metathesis in Water – A Case Study for<br />
Supramolecular Modification of Reactivity<br />
Miriam Sessler, Jürgen Schatz<br />
Organic Chemistry 1, Department Chemistry and Pharmacy,<br />
University of Erlangen, Henkestr. 42, 91054 Erlangen / Germany<br />
Generally, metathesis reactions are carried out in organic solvents and their potential<br />
utilization in aqueous medium is largely unexploited. The majority of methods reported<br />
for aqueous metathesis did not use pure water as a reaction medium but only organic<br />
solvents with some percentage of water in it. [1] However, the idea of “green chemistry”<br />
has encouraged us to develop a simple and environmentally benign ring-closing<br />
metathesis (RCM) protocol based exclusively on aqueous media. [2]<br />
Here, supramolecular, water-soluble additives based on e.g. calix[n]arenes exhibit a<br />
beneficial influence on the RCM of non-polar substrates in pure aqueous medium using<br />
standard Grubbs-type catalyst. Additionally to (micro)solubilization of both the catalyst<br />
and starting material by the used macrocycles, ion-pair formation of the phosphonium<br />
ion formed in aqueous solution and the added macrocycles seem to play a crucial role in<br />
the ring-closing reaction.<br />
[1] S. J. Connon, M. Rivard, M. Zaja, S. Blechert, Adv. Synth. Catal. 2003, 345, 572.<br />
[2] Th. Brendgen, T. Fahlbusch, M. Frank, D. T. Schühle, M. Seßler, J. Schatz, Adv.<br />
Synth. Catal. 2009, 351, 303.
Controlled and Targeted Drug Delivery Using Supramolecular System<br />
Vladimír Král a,b , Jarmila Králová c , Martin Havlík b,c Kamil Záruba b , Pavel<br />
Řezanka b , Zdeněk Kejík b , Tomáš Bříza b,d , Robert Kaplánek b,d , Pavel Martásek d<br />
a Zentiva k.s., Part of the sanofi-aventis group, U Kabelovny 130, 102 37 Prague 10,<br />
b Institute of Chemical Technology, Department Analytical Chemistry, Technická 5,<br />
166 28 Prague 6, Czech Republic (email: vladimir.kral@vscht.cz),<br />
c Institute of Molecular Genetics, AS CR, Flemingovo nam.2, Prague 6, Czech Republic,<br />
d st<br />
Charles University in Prague, 1 Faculty of Medicine, Kateřinská 32, Czech Republic.<br />
Rational design of functional nanomaterials is of current interest because of a variety of<br />
potential applications ranging from chemistry to biological sciences. One of the key<br />
areas is selective drug delivery using supramolecular strategies. The uptake of<br />
exogenous molecules such as drugs into cells can arise from a variety of mechanisms<br />
that can be broadly classified as active and passive transport. Active uptake requires that<br />
target molecules are recognized by specific intermolecular interactions, selected, and<br />
shuttled across the cell membrane by receptors.<br />
Porphyrin chemistry has undergone a renaissance over the past ten years due to<br />
potential applications of these compounds in areas including supramolecular chemistry,<br />
solar energy conversion and catalysis.<br />
Here we describe application of porphyrin-conjugates for supramolecular targeted drug<br />
delivery of cytostatic drugs and ODN in combination with photodynamic therapy.<br />
Novel porphyrin-conjugates with oligoethyleneglycol, oligopeptide, alkaloid, mono-,<br />
disaccharide, and cyclodextrin substitution showed significant binding properties as<br />
well as photosensitizing potential in vitro and in vivo and displayed an increased<br />
selectivity for malignant tissue. Moreover, polymethine and other polycationic<br />
porphyrin derivatives exhibit not only very specific tumor localization, but also into-cell<br />
antisense oligonucleotide transport properties as was demonstrated on the primary<br />
leukemic cells.<br />
Financial support from the Czech Grant Agency No. P303/11/1291, 203/09/1311,<br />
P301/10/1426 and the Ministry of Education of the Czech Republic (projects No.<br />
MSM6046137307 and LC06077) is gratefully acknowledged.
Novel calixarene- and biscalixarene-based heteroditopic receptors<br />
Ivan Vatsouro, Kirill Puchnin, Boris Bolshchikov, Pavel Zaikin, Maria Logunova,<br />
Vladimir Kovalev<br />
Department of Chemistry, M.V. Lomonosov Moscow State University, Lenin’s Hills,<br />
119991 Moscow, Russia<br />
We present here the results of our research on the novel calix[4]arene-based<br />
heteroditopic host for ion-pair recognition. The hosts of general type 1 are<br />
functionalized calixtubes, which are easily available due to the use of 3-R-1-<br />
adamantylcalix[4]arenes at the step of bis-calixarene preparation. The well established<br />
cation binding site (especially for K +<br />
) formed by eight calixtube oxygens is completed<br />
with two of four urea groups for anion binging thus providing the heteroditopic action<br />
of hosts 1.<br />
Calix[4]arenes bearing one, two or four carboxymethyl groups at narrow rim<br />
reacted with tryptamine or tryptophane methyl ester to give the heteroditopic hosts<br />
through amide formation: the cation binging site is formed by amide oxygens while the<br />
anion binding occurs at the indole NHs. The calixarenes with one or two distal indole<br />
functionalities at narrow rim undergo inter/intramolecular dimerization when kept in<br />
trufluoroacetic acid and then oxidized, thus giving the 2,2’-bisindole-bridged<br />
calix[4]arenes 2 and bis-calix[4]arenes 3. The hosts of type 2 possess the more rigid<br />
cation binding site if compared to their non-dimerized precursors and also the bisindole<br />
fluorophore site for anion recognition.<br />
This research was supported by Russian Foundation for Basic Research, grant<br />
#09-03-00971.
What does the recognition of biomolecules and switchable nanoassemblies have<br />
in common? Interacting Molecules!<br />
Prof. Dr. Carsten Schmuck, Universität Duisburg-Essen, Universitätsstrasse 7,<br />
45141 Essen, Germany<br />
The lecture will focus on some recent achievements from our laboratory giving an<br />
overview of the research going on in our group. Our research focuses on the<br />
development, synthesis and evaluation of new supramolecular systems which function<br />
in polar solvents and thus might have prospect for applications. Currently our work<br />
mainly involves ionic interactions as a key non-covalent bond. We have introduced<br />
guanidiniocarbonyl pyrroles as one of the most efficient oxoanion binding motifs known<br />
so far relying on H-bond assisted ion pair formation. The systematic thermodynamic<br />
study of knock-out analogues allows us to learn more about the importance of<br />
individual non-covalent interactions for the overall binding affinity.<br />
With the help of combinatorial approaches, we have used this binding motif to develop<br />
sensors for amino acids or highly efficient stereoselective receptors for oligopeptides.<br />
Currently, we are working on protein surface or DNA recognition. For example,<br />
tetravalent peptide ligands identified from the screening of a combinatorial library were<br />
shown to be highly efficient non-competitive enzyme inhibitors working by binding to<br />
the protein surface thus blocking the access to the active site.<br />
We are also interested in self-assembling zwitterions which form soft materials such as<br />
vesicles, polymers or monolayers in polar solvents and on surfaces. For example, very<br />
recently we developed a supramolecular polymer based on a monomer with two<br />
orthogonal self-complementary binding sites using either metal-ligand or ionic<br />
interactions. In a hierarchical self-assembly process this molecule first forms ion paired<br />
dimers which can be polymerized by the addition of metal ions.
Variation around charge-assisted H-bonded molecular networks<br />
Sylvie FERLAY, Mir Wais HOSSEINI<br />
LCCO, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France.<br />
ferlay@unistra.fr<br />
Dicationic bisamidinium have been shown to be particularly well adapted to form, when<br />
associated with polycyanometallates, perfectly robust molecular networks, by charge-assisted<br />
H-bonds. In particular, upon combining hexacyanometallate anions [M III (CN)6] 3- (M = Fe, Co,<br />
Cr) or, in certain conditions [Fe II (CN)6] 4-<br />
, with bisamidinium molecules 1, 2, or 3, analogous<br />
2-D networks are obtained in the solid state and have been studied from a structural point of<br />
view (see scheme) [1-5]. With 1 or 2, the formed networks are porous, whereas they are filled<br />
with the propyl chains beard by 3.<br />
R<br />
H H<br />
H H<br />
H H<br />
N<br />
N<br />
N<br />
N<br />
N<br />
N<br />
+ ) ( + HO + ) ( + OH<br />
+ )<br />
( +<br />
N<br />
N<br />
N<br />
N<br />
N<br />
N<br />
H H<br />
H H<br />
H H<br />
1 2 3<br />
CN<br />
NC CN<br />
M<br />
NC CN<br />
CN<br />
+<br />
H<br />
H<br />
N<br />
+ )<br />
N<br />
( + R<br />
N<br />
N<br />
H<br />
H<br />
Scheme: General formation of the two dimensional networks (X-2H + )3[M III (CN)6] 3- 2<br />
(X=1, 2 or 3, and M = Cr, Fe or Co) or Y(3-2H + )3[Fe II (CN)6] 4- 2 (Y=Na, K, Rb, Cs)<br />
The porosity of the formed system has been studied as well as the post synthetic<br />
modification, and also the construction of singular units called "crystals of crystals".[6-8]<br />
[1] S. Ferlay, O. Félix, M.W.Hosseini, J.-M. Planeix, N. Kyritsakas, Chem. Commun. , 2002, 702.<br />
[2] S. Ferlay, V. Bulach, O. Félix, M. W. Hosseini, J-M. Planeix, N. Kyritsakas, CrystEngComm, 2002, 447.<br />
[3] P. Dechambenoit, S. Ferlay, M.W.Hosseini, J.-M. Planeix, N. Kyritsakas, New J. Chem., 2006, 30, 1303.<br />
[4] P. Dechambenoit, S. Ferlay, M. W. Hosseini, N. Kyritsakas J. Am. Chem. Soc., 2008, 130, 17106.<br />
[5] P. Dechambenoit, S. Ferlay, M. W. Hsseini, N. Kyritsakas Chem. Comm., 2009, 1559-1561.<br />
[6] P. Dechambenoit, S. Ferlay,, N. Kyritsakas and M. W. Hosseini Chem. Commun., 2010, 868-870.<br />
[7] P. Dechambenoit, S. Ferlay,, N. Kyritsakas, M. W. Hosseini , Chem. Commun., 2009, 6798 - 6800.
Binding properties of calix[4]arene-amides and thioamides and their application in ion<br />
selective electrodes<br />
a<br />
V. Hubscher-Bruder a , J. Kulesza a,b , F. Arnaud-Neu a b<br />
, M. Bocheńska<br />
Department of Analytical Sciences”, IPHC, UMR 7178 (CNRS-UDS), ECPM,<br />
25 rue Becquerel, 67087 Strasbourg Cedex 02, France<br />
b<br />
Department of Chemical Technology, Technical University of Gdansk<br />
ul. Narutowicza 11/12, 80-264 Gdansk, Poland<br />
At present, the importance of detecting and controlling the toxic heavy metals (such as<br />
Cd 2+ or Pb 2+<br />
) in waters, is extremely important, being a challenge for chemists who design<br />
and synthesize selective ligands for these cations.<br />
We report here the study of calix[4]arene-thioamides as potential sensing material for<br />
transition and heavy metal cations. By introducing soft sulphur atoms into the structure of the<br />
calix[4]arene, the preference for binding heavy and transition metal cations, toxic for human<br />
beings, was expected. Although some examples of calixarene-thioamides applications are<br />
known from the literature, only few publications deal with, for instance, stability constants<br />
1-3<br />
determination which is important in studying new ligands properties.<br />
The interactions of these ligands with several representative cations (Na + , Ca 2+ , Gd 3+ ,<br />
Ag + , Cd 2+ , Pb 2+ , Zn 2+ and Cu 2+ ) were studied using different techniques: liquid-liquid<br />
extraction, 1<br />
H NMR, X-ray diffractometry, UV spectrophotometry, potentiometry and<br />
microcalorimetry. The properties of calix[4]arene-thioamides were compared with their<br />
corresponding calix[4]arene-amides. Some of these thioamides derivatives were used as<br />
active materials in ion-selective membrane electrodes (ISEs).<br />
[1] F. Arnaud-Neu, G. Barrett, D. Corry, S. Cremin, G. Ferguson, J. F. Gallagher, S. J. Harris, M. A. McKervey,<br />
M. J. Schwing-Weill, J. Chem. Soc., Perkin Trans. 2, 1997, 575<br />
[2] M. G. Drew, P. D. Beer, M. I. Ogden, Acta Cryst., 1997, C53, 472<br />
[3] K. No, J. H. Lee, S. H. Yang, S. H. Yu, M. H. Cho, M. J. Kim, J. S. Kim, J. Org., 2002, 67, 3165
Photo-control of binding ability of crown-annelated chromenes<br />
S.V.Paramonov, 1 V.Lokshin, 2 Yu.V.Fedorov, 1 O.A.Fedorova 1<br />
1<br />
A.N.Nesmeyanov Institute of Organoelement Compounds RAS,<br />
28 Vavilova st., 119991 Moscow, Russia. E-mail: paramonov@ineos.ac.ru<br />
2<br />
Centre Interdisciplinaire de Nanoscience de Marseille (CINaM, CNRS UPR 3118),<br />
163 Av. de Luminy, 13288 Marseille, France<br />
Photochromic compounds were proved to be of high demand in<br />
modern technologies due to their optical properties. One of the<br />
interesting trends in developing of new photochromic systems consists<br />
in preparation of multifunctional compounds with photo-controlled<br />
properties. This work is focused on isomeric crown-annelated<br />
chromenes and the use of UV irradiation to control photochemically<br />
their binding ability towards metal ions and protonated amino acids.<br />
We studied binding ability of 15-crown-5-annelated chromenes<br />
towards magnesium (II), barium (II) and lead (II) ions. Prior to<br />
irradiation the chromenes form stable complexes with all cations, the<br />
composition and the structure depending on the ion nature. Upon<br />
irradiation the photoinduced forms also formed complexes of lower<br />
stability.<br />
The similar effect was observed for the 18-crown-6-annelated chromenes with several<br />
protonated amino acids. Without irradiation, all amino acids were bound by their ammonium group<br />
to the crown ether moiety of the chromenes (1:1 complexes). Upon irradiation, the corresponding<br />
merocyanines formed different types of complexes depending on the amino acid length. In all cases,<br />
the stability of the 1:1 complexes after irradiation was lower.<br />
The conclusions are supported by UV-Vis and NMR investigations. The synthetic approach<br />
to the described systems is also discussed.<br />
Acknowledgments to RFBR program (10-03-93105), <strong>International</strong> Research Group<br />
«Photoswitchable Organic Molecules Systems and Devices (PHENICS) and Réseau Formation-<br />
Recherche Franco-Russe du Ministère de la Jeunesse de l'Education Nationale et de la Recherche<br />
for financial support.
“Light and Molecular Design in Biological Applications”<br />
1<br />
Piotr Bregestovski<br />
INSERM U 751, 13385 Marseille, France<br />
piotr.bregestovski@univmed.fr<br />
Photochromic switches and genetically encoded biosensors become a<br />
powerful tools for modulation activity of neurons and neuronal networks. Our<br />
understanding the mechanisms underlying development and functioning of<br />
the nervous system has greatly advanced in recent years due to the<br />
development of these powerful molecular and genetic tools. Remote sensors<br />
allow to probe localisation and function of various neuronal proteins, cells and<br />
networks. Controlled by light molecular consctructs allow to switch on and off<br />
the activity of specific proteins and to control the excitation of neurons with<br />
high temporal and spatial resolution. A number of light-sensitive biosensors<br />
for non-invasive monitoring of ions and enzymes has been developed. These<br />
molecular designs expand extremely rapidly and a number of new<br />
approaches for image analysis of various proteins in living cells has being<br />
proposed. Resent observations and application of new tools for molecular<br />
imaging and remote activation of receptors, ionic channels and synaptic<br />
networks will be presented.
Identification of sensors and recognition mechanisms from ligand-<br />
metal-analyte libraries<br />
Evgeny Kataev<br />
Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62,<br />
09111 Chemnitz, Germany, E-mail: evgeny.katayev@chemie.uni-r.de<br />
In this work we explore a novel approach for the search of selective sensors and<br />
receptors for a given analyte using dynamic combinatorial chemistry. It is based on the<br />
idea that selectivity of an analytical signal or a binding event can be gained by<br />
diversifying the number of possible interactions between guest and components of a<br />
dynamic library. The standard approach for the design of a sensor involves covalent<br />
connection of a recognition site to an analytically reporting unit (e.g. fluorescent<br />
molecule). In our approach we design several ligands bearing fluorophores that can't<br />
directly interact with an analyte. Ligands can coordinate metal cations and only then,<br />
the resulting complex can interact with an analyte. Two libraries which possess<br />
described properties are shown below in the Figure. The first library is designed for the<br />
fluorescent sensing of ATP in aqueous solution. In the second library we have observed<br />
adaptable behaviour of the library "ligand+Zn 2+<br />
" in response to the diamines.<br />
References:<br />
NH<br />
N<br />
N<br />
L anthr L coum<br />
+CuCl2<br />
O<br />
O<br />
NH<br />
N<br />
Fluorescent sensing of ATP<br />
O O<br />
N<br />
NH H HN<br />
NH HN<br />
N N<br />
+ Zn(ClO 4) 2<br />
Self-assembly is sensitive to<br />
the amount of an amine<br />
E. A Katayev, M. B. Schmid, Control of metal-directed self-assembly by metal-amine<br />
interactions. Dalton. Trans. 2011, 40, 2778-2786
Supramolecular protein immobilization<br />
A. González-Campo, J. Cabanas-Danes, L. Yang, D. Wasserberg, J. Huskens,<br />
P. Jonkheijm*<br />
Molecular Nanofabrication, University of Twente, P.O. Box 217, 7500 AE, Enschede,<br />
Netherlands.<br />
The immobilization of proteins onto surfaces is a continually growing area. 1 New<br />
results to immobilize proteins, which are sensitive to remote electrochemical stimuli,<br />
using cucurbituril (CB) and cyclodextrin (CD)-modified surfaces will be presented.<br />
Site-selectively ferrocene-tagged fluorescent protein binds to self-assembled surfaces<br />
through weak or strong interactions between the ferrocenyl guest and the host surface of<br />
beta-CD or CB[7]. Upon reduction of the ferrocene unit, the protein was removed from<br />
either surface, with the CD surface showing the fastest disassembly kinetics. The<br />
stimuli-responsive attachment used will open new avenues for cell-responsive studies.
THE EFFECT OF CALIXARENE C-107 ON KINETIC<br />
CHARACTERISTICS OF Nа + ,К +<br />
-АТРase OF MYOMETRIUM<br />
PLASMA MEMBRANE<br />
Shkrabak O.A. 1 , Veklich T.O. 1 2<br />
, Rodik R.V.<br />
1 Palladin Institute of Biochemistry, NASU, Kyiv; e-mail: veklich@biochem.kiev.ua<br />
2 Institute of Organic Chemistry, NASU, Kyiv; e-mail: manli@ioch.kiev.ua<br />
We investigated the inhibitory action of calixarene C-107 (5,17-diamino(2-<br />
pyridyl)methylphosphono-11,23-di-tret-butyl-26,28-dihydroxy-25,27-<br />
dipropoxycalix[4]arene) on Na + ,K + -ATPase activity kinetic properties of myometrium<br />
perforated plasma membrane. It was shown that this calixarene, inhibiting Na + ,K + -<br />
ATPase, did not change the kinetic parameters (Km, nH) of reaction velocity dependence<br />
on substrate concentration. The constant КMg of enzyme activation by MgCl2 had<br />
complex dependence on calixarene C-107 concentration: increased twice from 173 ± 4<br />
µM to 375 ± 43 µM with growth of calixarene concentration up to 50 nM and decreased<br />
to control level with further growth of calixarene concentration to 100 nM. The Hill<br />
cooperativity coefficient nH of activation by MgCl2 did not vary in the presence of<br />
mentioned calixarene. Both ATP and MgCl2 had no influence on Na + ,K + -АТРase<br />
constant of inhibition by calixarene C-107, but the concentration increase of mentioned<br />
physiological compounds caused the growth of cooperativity coefficient nH of<br />
enzymatic reaction inhibition by calixarene C-107. It was also shown that this<br />
calixarene increased the affinity of the enzyme to the sodium pump conventional<br />
inhibitor - ouabain: the magnitudes of the apparent constant of inhibition I0.5 changed<br />
from 26.9 ± 1.3 µM to 10.9 ± 0.6 µM. However, the ouabain itself did not influence on<br />
the affinity of the Nа + ,K +<br />
-АТРase to сalixarene С-107.<br />
Therefore, we can conclude that inhibitory action of calixarene C-107 on Na<br />
ATPase has uncompetitive character and, perhaps, interaction of calixarene C-107 with<br />
enzyme leads to decrease of enzyme turnover number.<br />
+ ,K +<br />
We are thankful to corresponding members of NASU V.I. Kalchenko and S.O.<br />
Kosterin for helpful discussion and scientific cooperation.<br />
-
Cucurbiturils at the interface between supramolecular chemistry and materials science<br />
Our research interests include the development of controlled polymer architectures, 1 hybrid<br />
nanoparticle assemblies, 2 and the integration of dynamic supramolecular systems onto surfaces. 3<br />
Using cucurbit[n]urils (CB[n]s) we adopt a simple bottom-up approach to achieve sophisticated<br />
designs which are directed at the preparation of novel photonic devices, high-density patterned<br />
media, and chemical and biological sensors. 4 Our CB[n] based host-guest systems exhibit dynamic<br />
self assembly and are capable of responding to stimuli (photochemical, chemical, and thermal)<br />
which allow for external control and function to be built into the materials. Modification of solution<br />
viscosity using multivalent polymers 5 and imidazolium based ionic liquids 6 have been<br />
accomplished through dynamic crosslinking in water using CB[n]s to produce colorful hydrogels<br />
and hierarchical architectures. Furthermore, polymer-inorganic composite materials can be readily<br />
prepared based on the CB[8] coupling of multivalent gold nanoparticles to copolymers. 7 When<br />
these systems are attached onto gold surfaces intricate control is achieved over the site-selective<br />
immobilization of colloids 3 and peptides. This has great scope for the development of optical<br />
materials, chemical sensors and biological separations.<br />
hierarchical self assembly dynamic hydrogels<br />
nanoparticle assembly self-assembled surfaces<br />
1. Rauwald, U.; Scherman, O. A. Angew. Chem. Int. Ed., 2008, 47, 3950-3953.<br />
2. Lee, T.C.; Scherman, O.A. Chem. Commun., 2010, 46, 2338-2440.<br />
3. Tian, F.; Cheng, N.; Nouvel, N.; Geng, J.; Scherman, O.A. Langmuir, 2010, 26, 5323-5328.<br />
4. Zayed, J.M.; Nouvel, N.; Rauwald, U.; Scherman, O.A. Chem. Soc. Rev., 2010, 39, 2806-2816.<br />
5. Appel, E.A.; Rauwald, U.; Jones, S.; Zayed, J.M.; Scherman, O.A. J. Am. Chem. Soc., 2010,<br />
ASAP, DOI: 10.1021/ja106362w.<br />
6. Jiao, D.; Biedermann, F.; Tian, F.; Scherman, O.A. J. Am. Chem. Soc., 2010, ASAP, DOI:<br />
10.1021/ja106716.<br />
7. Coulston, R.; Jones, S.T.; Lee, T.C.; Appel, E.A.; Scherman, O.A. Chem. Commun., in press,<br />
DOI: 10.1039/C0CC03250F.
SUPRAMOLECULAR CHEMISTRY OF CALIXARENES.<br />
FUNDAMENTAL AND PRACTICAL ASPECTS<br />
Vitaly Kalchenko<br />
Institute of Organic Chemistry, National Academy of Sciences of Ukraine<br />
02660, Kiev-94, Ukraine, vik@ioch.kiev.ua, www.ioch.kiev.ua/calix<br />
Calixarenes are versatile molecular scaffolds for design of highly efficient and selective<br />
receptors, self-assembling systems and well defined functional nanostructures. The<br />
paper will report the molecular modeling, synthesis, structural investigations of<br />
phosphorus, nitrogen and sulfur containing (thia)calixarenes and their supramolecular<br />
complexes with a series of bio-relevant or ecologically hazardous molecules, cations<br />
and anions.<br />
The special attention will be paid to chiral and water-soluble calixarenes in<br />
context of bio-medical investigations. An application of the P,N,S-containing<br />
calixarenes toward radionuclides extraction, chemosensors constructions, functional<br />
nanoparticles formations and drug design will be discussed.<br />
References:<br />
[1] For review see: Cherenok S., Dutasta J.-P., Kalchenko V. Current Organic<br />
Chemistry. 2006.10. 2307-2331; Kalchenko V. UPAC. 2008. 80. 1449-1458; Rodik<br />
R.V., Boyko V.I., Kalchenko V. I. Current Medicinal Chemistry. 2009. 16 (13), 1630-<br />
1655. Cherenok S., Kalchenko V. Topics in Heterocyclic Chemistry. 2009. 20. 229-273.<br />
[2] Kasyan O., Kalchenko V., Bolte V., Bohmer V. Chem. Commun. 2006. 1932–1934.<br />
[3] Cherenok S., Vovk A., Muravyova I., Shivanyuk A., Kukhar V., Lipkowski J.,<br />
Kalchenko V. Organic Letters. 2006. 8. 549-551.<br />
[4] Notestein J.M., Andrini L.R., Kalchenko V.I., Requejo F.J., Katz A., Iglesia E.<br />
J. Am. Chem. Soc. 2007. 129. 1123-1131.<br />
[5] Cherenok S., Vovk A., Muravyova I., Shivanyuk A., Kukhar V., Lipkowski J.,<br />
Kalchenko V.Organic Letters. 2006. 8. 549-552.<br />
[6] Torgov V.G., Us T.V., Korda T.M., Kostin G.A., Miroshnichenko S.I., Klimchuk<br />
O.V., Kalchenko V.I. J. Inclusion Phenomena and Macrocyclic Chemistry. 2008. 62.<br />
51-58.<br />
[7] Klyachina M.А., Yesypenkо O.A., Pyrozhenko V.V., Shishkina S.V., Shishkin<br />
O.V., Boyko V.І., Kalchenko V.I. Tetrahedron. 2009. 65. 7085-7091.<br />
[8] Ha J.-M., Katz A., Drapailo A.B., Kalchenko V. I. J. Phys. Chem. C. 2009. 113.<br />
1137-1142.<br />
[9] Vovk A.I., Kononets L.A., Tanchuk V.Yu, Cherenok S.O., Drapailo A.B.,<br />
Kalchenko V.I., Kukhar V.I. Bioorg. Med. Chem. Lett. 2010. 20. 483–487.<br />
[10] Solovyov A.V., Cherenok S.O., Kalchenko O.I., Atamas L.I., Kazantseva Z.I., Koshets I.A.,<br />
Tsymbal I.F., Kalchenko V.I. Journal of Molecular Liquids. 2011. 159. 117–123.
Chiral Concave N-Heterocyclic Carbenes<br />
Tim Reimers, Ulrich Lüning*<br />
Otto-Diels-Institut für Organische Chemie, Olshausenstraße 40, 24098 Kiel, GER<br />
treimers@oc.uni-kiel.de, luening@oc.uni-kiel.de<br />
In the last two decades, N-heterocyclic carbenes (NHC) have gained large interest.<br />
They are widely applied in organocatalysis and also as ligands in transition metal<br />
catalyzed reactions, e.g. Grubbs’ Second Generation Catalyst. [1]<br />
Due to their versatility,<br />
a control of their reactivity and selectivity is desirable.<br />
For example, the incorporation of an NHC in a concave bimacrocycle was realized<br />
by Winkelmann (for precursor see structure A). The influence of the concave shape of<br />
[2]<br />
the catalyst in respective reactions has already been shown. In order to achieve<br />
enantioselectivity, axial chirality was created by exchanging a phenyl bridgehead for a<br />
naphthyl unit (structure B).<br />
O<br />
N<br />
N<br />
O<br />
O O<br />
Me<br />
Me<br />
O<br />
O<br />
* N N * * N N *<br />
O O<br />
O O<br />
A B C<br />
O O<br />
Figure 1: Three concave NHC precursors: A is achiral, B and C are axially chiral,<br />
but only C is configurationally stable.<br />
If the backbone of the NHC precursor is not modified, a rotation of the N-heterocycle<br />
along the CAr-N bond is observed. This leads to an equilibrium of the two<br />
enantiomers at room temperature and separation is not possible.<br />
This contribution shows an approach to avoid the rotation by adequate substitution<br />
to reach configurational stability. The synthesis of a respective axially chiral bimacro-<br />
[3]<br />
cycle has been accomplished (structure C). The stabilization of the configuration has<br />
been proven by NMR experiments and by chiral HPLC. The application of axially<br />
chiral bimacrocyclic N-heterocyclic carbenes in enantioselective supramolecular<br />
catalysis is the final goal.<br />
[1] M. Scholl, S. Ding, C. W. Lee, R. H. Grubbs, Org. Lett. 1999, 1, 953-956.<br />
[2] O. Winkelmann, U. Lüning, Supramol. Chem. 2009, 21, 223-229.<br />
[3] T. Reimers, C. Näther, U. Lüning, Eur. J. Org. Chem. 2011, 1040-1046.<br />
[2]
EUROPIUM(III) DOPED POLYELECTROLYTE<br />
NANOCAPSULES. COLLOIDAL AND PHOTOPHYSICAL<br />
PROPERTIES<br />
R. Zairov, A.Mustafina, A.Konovalov<br />
A.E.Arbuzov Institute of organic and physic chemistry KSC RAS,<br />
Kazan, 420088, Russia, e-mail: rustem@iopc.ru<br />
Novel highly luminescent europium(III) thenoyltrifluoroacetonate adduct with<br />
phosphineoxide 1 was capsulated into polyelectrolyte (PE) capsule fabricated through<br />
layer-by-layer procedure. The poly(sodium 4-styrenesulfonate) (PSS) was applied as the<br />
first layer. Positively charged polyethyleneimine (PEI) has been deposited on PSS<br />
coated particles resultin in their recharging from minus to plus. The further three layers<br />
of the abovementioned oppositely charged polyelectrolytes were stepwise deposited on<br />
PEI-PSS coated Eu(TTA)31 particles in the similar route. The multilayer PE shell<br />
protects highly luminescent core from deactivation and decomposition (due to pH<br />
changes or ligand substitution) and also provides colloidal stability of Eu(TTA)31<br />
containing capsules in water.<br />
Photophysical properties, size and<br />
electrokinetic potential in aqueous<br />
solutions were studied at the various<br />
number of PE layers. AFM images of<br />
dried samples were also obtained. The obtained core-shell nanoparticles exemplify<br />
stimuli responsive colloids, which are able to give luminescent response on the<br />
interfacial interactions with substrates. The quenching effect of organic (dye) and<br />
inorganic (metal ions) is represented as the basis of sensing function.<br />
The multifunctional core-shell nanoparticles were developed with luminescent<br />
Eu(III) complex as the core and paramagnetic metal ions with high magnetic relaxation<br />
rates (Cu(II), Mn(II) and Gd(III)) incorporated at the interlayer of the polyelectrolyte<br />
multilayer shell.<br />
Acknowledgement: RFBR (grant 10-03-00352a)
Aromaticity Switching In Porphyrinoids And Heterorphyrinoids<br />
Lechosław Latos-Grażyński<br />
University of Wrocław, Wrocław, POLAND, llg@wchuwr.pl<br />
One of the ways to study the phenomenon of aromaticity is through the synthesis of new<br />
molecules, which are often specifically designed to test various aspects of the theory or<br />
to pose new problems. 1 Aromaticity of porphyrinoids can be influenced by a variety of<br />
structural modifications, such<br />
as peripheral substitution,<br />
covalent linking of multiple<br />
macrocycles, ring expansion<br />
or contraction, and<br />
introduction of non pyrrolic<br />
subunits. The latter approach<br />
is most readily realized by<br />
replacing one of the pyrrole<br />
rings of the porphyrin with a<br />
different hetero- or carbocyclic fragment. Such a modification can have a profound<br />
influence on the aromaticity of the macrocycle, as demonstrated by the investigated<br />
family of porphyrinoids (1 – 7). The studies have been focused on the physical<br />
manifestations of aromaticity, with a special emphasis on NMR spectroscopy. The aim<br />
of the presentation is to provide a description of porphyrinoid aromaticity and its<br />
connection with linking mode of arene moieties, tautomeric equilibria, intramolecular<br />
rearrangements, reversible peripheral modifications, oxidation state or coordination. The<br />
selected processes act as peculiar reversible switches of aromaticity. For instance a<br />
figure-eight expanded porphyrinoid 5 exhibits an unprecedented controlled switching<br />
between several Möbius and Hückel π-delocalization modes. 2 Similarly the palladium<br />
complexes of vacataporphyrin 2 reveal Hückel aromaticity or Möbius antiaromaticity of<br />
[18]annulene applying a butadiene fragment of vacataporphyrin as a topology selector. 3<br />
(1) Stępień, M., Sprutta, N., Latos-Grażyński, L., Angew. Chem. Int. Ed. 2011, 50, 4288-4340.<br />
(2) Stępień, M.; Latos-Grażyński, L.; Sprutta, N.; Chwalisz, P.; Szterenberg, L. Angew. Chem. Int. Ed.<br />
2007, 46, 7869-7874.<br />
(3) Pacholska-Dudziak, E.; Skonieczny, J.; Pawlicki, M.; Szterenberg, L.; Ciunik, Z.; Latos-<br />
Grażyński, L. J. Am. Chem. Soc. 2008, 130, 6182-6195.
Supramolecular Polyoxothiometalates Paneling through<br />
{Mo2O2S2 } coordination: Structure, dynamics and<br />
Reactivity<br />
Sébastien Floquet and Emmanuel Cadot<br />
Institut Lavoisier de Versailles, UMR 8180, CNRS. Université de Versailles Saint Quentin, 45<br />
Avenue des Etats-Unis, 78035 Versailles CEDEX<br />
E.mail cadot@chimie.uvsq.fr<br />
The early transition metal oxy-sulfide<br />
clusters based on the {M2S2O2} (M=Mo or W)<br />
building unit constitute a novel, original and<br />
promising class of compounds [1] . Such molecular<br />
materials, ranging in a sub-class of the transition<br />
metal oxides, so-called polyoxometalates are of<br />
both intrinsic and fundamental interests and their<br />
properties are potentially attractive in diverse<br />
fields such as analysis, biochemistry, catalysis<br />
and medicine [2] . The acidic properties of the<br />
oxothiocation [Mo2O2S2] 2+ toward bases such as lacunary polyoxotungstate anions or<br />
hydroxide ion were investigated. [3,4]<br />
Depending on subtle variations of the synthetic<br />
conditions, large supramolecular assemblies were synthesized and characterized by single<br />
crystal X-ray diffraction and multinuclear NMR in solution. Fundamental criteria governing the<br />
stereochemistry of the self-assembly will be discussed with regard to the individual properties<br />
(geometry, host-guest complementarities, coordination requirement) of the reactive moieties.<br />
References<br />
1. E. Cadot, F. Sécheresse, Chem. Commun. 2002, 2189-2199.<br />
2. D-L. Long, R. Tsunashima, L. Cronin, Angew. Chem. Int. Ed. 2010, 49, 1736 – 1758<br />
3 J-F. Lemonnier, S. Duval, S. Floquet and E. Cadot, Israel J. Chem. 2011, 51(2) 290.<br />
4 S Duval, S. Floquet, C. Simonnet-Jégat, J. Marrot, R. Ngo Biboum, B. Keita, L. Nadjo, M. Haouas,<br />
F. Taulelle and E. Cadot, J. Am. Chem. Soc. 2010, 132, 2069-2077.<br />
1
Zwitterion-chromophore modules for<br />
white light emitting supramolecular polymers<br />
Ina Krebs and Carsten Schmuck<br />
Institute of Organic Chemistry, University of Duisburg-Essen, Universitätsstraße 7, 45141<br />
Essen, Germany<br />
With my talk I intend to show the synthesis of chromophore-zwitterion modules for<br />
supramolecular white light emitting polymers. These polymers would be formed via the selfassembly<br />
of the zwitterionic subunits. Therefore I use the self-complementary<br />
guanidiniocarbonylpyrrole-zwitterion developed by our group which has already been<br />
successfully used to obtain water stable supramolecular polymers and other nanostructured<br />
materials such as vesicles. [1,2] By combining this zwitterion with different fluorescent<br />
chromophores, light emitting supramolecular polymers should be accessible.<br />
Figure 1: Synthesized molecules.<br />
As known from the theory behind different color spaces, white light emission is obtained by<br />
mixing different colored dyes e.g. red, green and blue dyes. With the right mixing ratio of<br />
different colored zwitterions-chromophore units it should be possible to get a white light<br />
emitting solution. The main advantage of this zwitterion driven supramolecular aggregation,<br />
besides its stability in aqueous solutions, is that the self-aggregation can be reversibly<br />
switched on and off e.g. by pH adjustments.<br />
[1] C. Schmuck, W. Wienand, J. Am. Chem. Soc. 2002, 125, 452 - 459.<br />
[2] C. Schmuck, T. Rehm, K. Klein, F. Gröhn, Angew. Chem. 2007, 46, 1693 - 1697.
1<br />
Synthesis and Cation-Dependent Photophysical Properties of<br />
Crown-Containing 1,8-Naphthalimide Derivatives<br />
P. A. Panchenko 1 *, Yu. V. Fedorov 1 , O. A. Fedorova 1 , G. Jonusauskas 2<br />
Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova 28,<br />
Moscow, 119991, Russia. E-mail: pavel@ineos.ac.ru<br />
2<br />
Centre de Physique Moléculaire Optique et Hertzienne (CPMOH), UMR CNRS 5798,<br />
Université Bordeaux 1, 351, Cours de la Libération, 33405 Talence, France<br />
During the last years, much attention has been paid to the design, synthesis and<br />
characterization of photochemical molecular devices, which combine chromophore<br />
signaling units and receptor groups capable of binding of molecules and ions. Such<br />
devices can find employment in many disciplines such as biochemistry, clinical and<br />
medical sciences, analytical chemistry and environmental science.<br />
Naphthalimide derivatives with EDG at the 4-th position of naphthalene ring are<br />
well known organic chromophores and fluorophores showing good photostability and<br />
strong emission and absorption bands in the visible region. Thus, this type of<br />
compounds has been successfully used as signaling units for the design of ion-active<br />
molecular systems.<br />
R = H, Ac<br />
RHN<br />
Ar =<br />
PET FRET<br />
O<br />
O<br />
N Ar<br />
O<br />
H 2 N<br />
O<br />
O<br />
N<br />
O<br />
O<br />
O O<br />
O<br />
H<br />
N<br />
O<br />
N<br />
O<br />
O<br />
O<br />
N<br />
O O<br />
The present paper reports synthesis and investigation of spectral properties of<br />
naphthalimides containing crown ether substituents in N-aryl moiety. Compounds under<br />
study were found to respond to the presence of metal ions in MeCN solution via the<br />
enhancement of fluorescence intensity. The observed spectral effects were attributed to<br />
inhibition of PET process between naphthalimide chromophore and electron donating<br />
N-aryl group upon the complex formation. It was also demonstrated that the efficiency<br />
of energy transfer (FRET, Förster Resonanse Energy Transfer) between naphthalimide<br />
units in crown ether containing bis(chromophore) systems can be operated by the<br />
addition of metal ions.<br />
Ar
Chemoinformatics approaches to virtual screening and in silico design<br />
Alexandre Varnek,<br />
Laboratory of Chemoinformatics, UMR 7177 CNRS, University of Strasbourg<br />
http://infochim.u-strsabg.fr<br />
The goal of virtual screening is to discover putative hits in large databases of chemical<br />
compounds (usually ligands for biological targets) and to remove molecules possessing<br />
unfavorable properties. Thus, virtual screening significantly reduces the number of candidate<br />
molecules to be synthesized and tested experimentally.<br />
In drug design, two types of virtual screening are used: structure-based and ligandbased.<br />
The former explicitly uses the three dimensional structure of a biological target, whereas<br />
the latter uses only information about structure of organic molecules and their properties<br />
(activities).<br />
Here, we discuss an application of different theoretical approaches to computer-aided<br />
design of new drugs and materials. Particular attention is paid to the discovery of (i) new ionic<br />
liquids and (ii) some synthetic inhibitors of platelet aggregation.<br />
References.<br />
RGD-mimetic in the binding site of<br />
the integrin αIIbβ3 receptor<br />
G. Marcou, I. Billard, A.Ouadi and A. Varnek "In silico design of new ionic liquids (ILs) based on QSPR models<br />
of ILs viscosity J. Phys. Chem. B, 2010, 115 (1), 93–98<br />
A. Varnek and I. I. Baskin "Chemoinformatics as a theoretical chemistry discipline".<br />
Mol. Informatics, 2011, 30, 20 – 32
Mirco- and Mesoporous Coordination Polymers: Synthesis, Structure<br />
and Properties<br />
Vladimir P. Fedin<br />
Nikolaev Institute of Inorganic Chemistry SB RAS, 630090 Novosibirsk, Russia<br />
Synthesis, structure and functional properties of microporous and mesoporous metal-<br />
organic coordination polymers will be considered. Hybrid MIL-101/polyoxotungstate<br />
materials were used for selective oxidation of a range of alkenes with aqueous hydrogen<br />
peroxide. The selectivities toward epoxides were comparable or even superior to the<br />
corresponding homogeneous polyoxotungstates and strongly depended on the alkene<br />
nature. Under the reaction conditions employed, the hybrid materials were stable to<br />
leaching, behaved as true heterogeneous catalysts and could be used repeatedly several<br />
times without suffering a loss of the activity and selectivity.<br />
Enantiopure (homochiral) porous absorbents provide great opportunities for<br />
stereoselective sorption of chiral guest molecules and therefore highly demanded for<br />
separation and purification of important substrates including drugs and other bioactive<br />
molecules. Porous homochiral coordination polymers represent promising class of<br />
porous chiral absorbents due to high versatility of structural design; however the<br />
synthetic accessibility still remains a challenging problem here. Starting from<br />
enantiopure lactic, mandelic, camphoric, malic and aspartic acids we obtained series of<br />
homochiral porous coordination polymers with isoreticular topologies. These structures<br />
share the same building chiral motif with rigid linkers controlling the important<br />
structural properties (the pore sizes, free accessible volumes) and stability of the metal-<br />
organic frameworks upon guest exchange. These structures were shown to possess<br />
remarkable size- and enantioselective sorption properties toward chiral alcohols and sulfoxides.<br />
More important, some chiral drug precursors also show notable enantioselectivity upon<br />
inclusion into these homochiral porous coordination polymers.<br />
The research was partially supported by the Russian Foundation for Basic Research<br />
(11-03-00112) and Russian Academy of Sciences (program 5.6.1).
Polyphosphorus Ligands in Supramolecular Chemistry<br />
M. Scheer, F. Dielmann, A. Schindler and S. Welsch<br />
Prof. Dr. Manfred Scheer, Universität Regensburg, 93040 Regensburg (Germany)<br />
In contrast to common approaches in supramolecular chemistry, our research is<br />
focused on the use of substituent-free Pn-ligand complexes like the tetrahedrane<br />
[CpMo(CO)2(η 3 -P3)], the cyclo-P4 containing complex [Cp''Ta(CO)2(η 4 -P4)] and the<br />
sandwich complex [Cp*Fe(η 5 -P5)] as connecting units for different metal centres to<br />
form oligomers, 1D and 2D coordination polymers, and fullerene-like aggregates. [1]<br />
Furthermore, via molecular recognition it is possible to encapsulate fullerenes like C60<br />
or carboranes by the [Cp*Fe(η 5 -P5)]/CuCl system (see below). [2]<br />
In contrast, the reaction of different Pn-ligand complexes with the Ag I salt of the weakly<br />
coordinating anion [Al{OC(CF3)3}4]ˉ leads to novel polycationic polymers, which show<br />
extensive dissociation and exhibit dynamic behaviour in solution. [3]<br />
The talk will focus<br />
on the structure and properties of the spherical giant molecules as well as on the<br />
dynamic behaviour of the polycationic polymers.<br />
Literature:<br />
[1] (a) J. Bai, A. V. Virovets, M. Scheer, Science 2003, 300, 781; (b) M. Scheer, J. Bai,<br />
B. P. Johnson, R. Merkle, A. V. Virovets, C. E. Anson, Eur. J. Inorg. Chem. 2005, 4023;<br />
(c) M. Scheer, Dalton Trans. 2008, 4372; (d) B. P. Johnson, F. Dielmann, G. Balázs, M.<br />
Sierka, M. Scheer, Angew. Chem. Int. Ed. 2006, 45, 2473. [2] (a) M. Scheer, A.<br />
Schindler, R. Merkle, B. P. Johnson, M. Linseis, R. Winter, C. E. Anson, A. Virovets, J.<br />
Am. Chem. Soc. 2007, 129, 13386; (b) M. Scheer, A. Schindler, C. Gröger, A. V.<br />
Virovets, E. V. Peresypkina, Angew. Chem. Int. Ed., 2009, 48, 5046; (c) S. Welsch, C.<br />
Gröger, M. Sierka and M. Scheer, Angew. Chem. Int. Ed., 2011, 50, 1435–1438. [3] (a)<br />
M. Scheer, L. J. Gregoriades, A. V. Virovets, W. Kunz, R. Neueder, I. Krossing, Angew.<br />
Chem. Int. Ed. 2006, 45, 5689; (b) M. Scheer, L. J. Gregoriades, M. Zabel, J. Bai, I.<br />
Krossing, G. Brunklaus, H. Eckert, Chem. Eur. J. 2008, 14, 282.
Synthesis, characterizations and applications of cyclic<br />
oxothiomolybdenum rings<br />
Sébastien Floquet, Akram Hijazi, Justin Kemmegne-Mbouguen, Jérôme Marrot<br />
and Emmanuel Cadot<br />
Institut Lavoisier de Versailles, UMR 8180, Université de Versailles, 45 av. des Etats Unis, 78035<br />
Versailles, France. sebastien.floquet@chimie.uvsq.fr, cadot@chimie.uvsq.fr<br />
In the last decade, we have derived the first members of a new family of<br />
polyoxometalates (POM) compounds, the cyclic polyoxothiomolybdates, and started<br />
exploring their properties. This fascinating class of compounds results from the selfcondensation<br />
of [Mo2O2S2(H2O)6] 2+<br />
building blocks around various types of ligands.<br />
Among these ligands, the tremendous propensity of the Mo-rings to encapsulate<br />
polycarboxylate anions as guest components allowed us to obtain a wide family of Morings<br />
differing by their shape, their size and their charge. In the present contribution, we<br />
will present the synthesis of some of these supramolecular compounds with a particular<br />
attention for NMR characterizations and studies in solution and their electro-catalytic<br />
properties toward the reduction of protons into hydrogen.<br />
B. Salignac, S. Riedel, A. Dolbecq, F. Sécheresse, E. Cadot, J. Am. Chem. Soc., 2000, 122, 10381;<br />
J.-F. Lemonnier, S. Floquet, J. Marrot, E. Terazzi, C. Piguet, P. Lesot, A. Pinto and E. Cadot,<br />
Chem. Eur. J., 2007, 13, 3548; B. Keita, S. Floquet, J.-F. Lemonnier, E. Cadot, A. Kachmar, M.<br />
Bénard, M.-M. Rohmer, L. Nadjo, J. Phys. Chem. C, 2008, 112, 1109-1114 ; S. Floquet, S. Brun,<br />
J.-F. Lemonnier, M. Henry, M.-A. Delsuc, Y. Prigent, E. Cadot and F. Taulelle, J. Am. Chem. Soc.,<br />
2009, 131, 17254-17259 ; S. Duval, S. Floquet, C. Simonnet-Jégat, J. Marrot, R. Ngo Biboum, B.<br />
Keita, L. Nadjo, M. Haouas, S. Brun, F. Taulelle and E. Cadot, J. Am. Chem. Soc., 2010, 132,<br />
2069-2077 ; J.-F. Lemonnier, S. Duval, S. Floquet, E. Cadot, Isr. J. Chem., 2011, 51, 290-302<br />
(review).
Lithium-controlled hierarchical assembly of Ti(IV)-Helicates<br />
Elisabeth Isaak,<br />
Markus Albrecht<br />
Institut für Organische Chemie, RWTH Aachen, Landoltweg 1, 52074 Aachen,<br />
Germany<br />
e-mail: Elisabeth.Isaak@rwth-aachen.de<br />
Dinuclear triple-stranded titanium(IV) complexes are formed in hierarchical, lithiumtemplated<br />
assembly from catecholate ligands and TiO(acac)2.<br />
An equilibrium between<br />
monomeric and dimeric units. For the formation of the dimer, two mononuclear<br />
complexes are connected by non-covalent spacers.<br />
The introduction of chiral information leads to diastereomers. In this study we changed<br />
the position of chiral center and used the ligands from nature's chiral pool building<br />
blocks for favoring one diastereomer.<br />
The properties of the complexes are studied by NMR, ESI FT-ICR MS and CD<br />
spectroscopy methods as well as X-ray diffraction.<br />
References:<br />
[1] M. Albrecht, S. Mirtschin, M. de Groot, I. Janser, J. Runsink,G. Raabe, M. Kogej,<br />
C. A. Schalley and R. Fröhlich, J. Am. Chem. Soc. 2005, 127, 10371.<br />
[2] M. Albrecht, E. Isaak, M. Baumert, V. Gossen, G. Raabe and R. Fröhlich, Angew.<br />
Chem. 2011, 123, 2903; Angew. Chem. Int. Ed., 2011, 50, 2850.
ADVANCES IN THE SUPRAMOLECULAR CHEMISTRY OF<br />
TETRAPYRROLIC COMPOUNDS<br />
1,2<br />
Gorbunova Yu.G.<br />
1 A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Moscow<br />
2 N.S. Kurnakov Institute of General and Inorganic Chemistry RAS, Moscow, Russia<br />
yulia@igic.ras.ru<br />
The first decade of the 21st century promoted an increase of the number of<br />
research devoted to the chemistry of tetrapyrrole compounds. On the one hand, this is<br />
due to the development and improvement of methods of investigation of compounds<br />
and materials, so it becomes possible to determine the exact composition, structure and<br />
purity of complex macrocyclic compounds. On the other hand, metal complexes with<br />
tetrapyrrolic compounds possess unique properties and as a result they used in the<br />
development of new functional materials 1-3<br />
.<br />
The report analyzes the approaches toward synthesis of tetrapyrrole compounds<br />
(porphyrins and phthalocyanines) - homo-and heteroleptic, as well as homo-and<br />
heteronuclear complexes. The construction of solid-state supramolecular architectures<br />
on the basis of tetrapyrrolic compounds will be specially discussed.<br />
Acknowledgements: We thanks European Research Association “SUPRACHEM”,<br />
RFBR (grant 09-03-93117) and CNRS for financial support.<br />
1. Phthalocyanines: Properties and Applications; Lever, A. B. P., Leznoff, C. C., Eds.;<br />
VCH: New York, 1989; Vols. 1-4.<br />
2. The Porphyrin Handbook; Kadish, K. M., Smith, K. M., Guilard, R., Eds.; Academic<br />
Press: San Diego, CA, 2000, 2003; Vols. 1-20.<br />
3. Functional Phthalocyanine Molecular Materials; Jiang, J. Ed.; Springer: Berlin, 2010.
Luisa De Cola<br />
Germany, Münster<br />
"Self-Assembly for the Creation of New (electro)Luminescent Materials"
Supramolecular Control of Catalyst Selectivity in the<br />
Hydroformylation<br />
Paweł Dydio,<br />
Wojciech I. Dzik, M. Lutz, Bas de Bruin, Joost N.H. Reek*<br />
Van’t Hoff Institute for Molecular Sciences University of Amsterdam,<br />
Science Park 904, 1098 XH, Amsterdam (The Netherlands)<br />
e-mail: p.f.dydio@uva.nl, j.n.h.reek@uva.nl<br />
A new approach in homogeneous catalysis involves the pre-organisation of a substrate<br />
by specific recognition, affording unusually high selectivities. 1,2<br />
Here we present DIMPhos (1), a new bidentate phosphorus ligand with an integral anion<br />
3<br />
recognition site. The supramolecular interactions between the binding pocket of the<br />
Rh(1)-catalyst and alkenes containing anionic functionalities provide an excellent<br />
design-concept to achieve remote control of the regioselectivity in hydroformylation.<br />
DFT calculations show that the substrate anchoring highly restricts movement of the<br />
reactive double bond, and hence favours one reaction pathway. This gives rise to the<br />
observed highly selective hydroformylation of a variety of unsaturated carboxylic and<br />
phosphonic acids. 4<br />
This provides the first example of wide-ranging remote control of<br />
catalyst selectivity by secondary substrate-ligand interactions. In this contribution we<br />
discuss the mechanism and the substrate range of this multifunctional catylitic system.<br />
1<br />
Breuil, P-A.R.; Patureau, F.W.; Reek, J.N.H. Angew. Chem. Int. Ed. 2009, 2162.<br />
2<br />
Smejkal, T.; Breit, B. Angew. Chem. Int. Ed. 2008, 311; Chem. Eur. J. 2010, 2470.<br />
3<br />
Dydio, P.; Zieliński, T.; Jurczak, J. Chem. Commun. 2009, 4560; Org. Lett. 2010, 1076.<br />
4<br />
Dydio, P.; Dzik, W.I; Lutz, M.; de Bruin, B; Reek, J.N.H. Angew.Chem.Int.Ed. 2011, 396.
Cationic amphiphilic calixarenes:<br />
self-assembling in water solutions and virus-sized DNA nanoparticles<br />
Rodik, R.V., a Jain, N., b Miroshnichenko, S.I., a Richert, L., b Kalchenko, V.I., a Mely,<br />
Y., b Klymchenko, A. S. b<br />
a Institute of Organic Chemistry National Academy of Sciences of Ukraine;<br />
Murmanska str.,5 02660, Kyiv-94, Ukraine E-mail: manli@ioch.kiev.ua<br />
b Laboratory of Biophotonics and Pharmacology, Faculty of Pharmacy, University<br />
of Strasbourg; 74, route du Rhin BP 60024 F-67401 Illkirch Cedex, France<br />
E-mail: aklymchenko@pharma.u-strasbg.fr<br />
The highly diverse biomedical applications of calixarene now include antibacterial,<br />
anticancer, antiviral, selective enzyme blocking and mimicking, as well as protein<br />
complexation 1 . On the other hand macro cycles (including calixarenes) were recently<br />
used as scaffolds for the synthesis cationic agents for gene delivery. However, only a<br />
few reports describe the interaction of cationic calix[4]arenes with DNA for gene<br />
delivery applications 2 .<br />
In this report, we present synthesis of cationic calixarenes and investigation of their<br />
self-assembly in aqueous solutions. Moreover, DNA binding experiments were carried<br />
out and good gene transfection properties of calixarenes were evidenced.<br />
Cl<br />
+<br />
N<br />
N+ N +<br />
N +<br />
OH<br />
OHCl HO<br />
HO<br />
Cl<br />
Cl<br />
O O O O<br />
1 2 2<br />
R R R R<br />
1<br />
CX3 1 R= 2 R= C3 H 7 -n<br />
CX6 1 R= 2 R=C 6 H 13 -n<br />
CX8 1 R= 2 R=C 8 H 17 -n<br />
CX12-8 1 R= C 12 H 25 -n, 2 R= C 8 H 17 -n<br />
CX12 1 R= 2 R=C 12 H 25 -n<br />
CX16 1 R= 2 R=C 16 H 33 -n<br />
Cl<br />
Cl Cl<br />
O O O O<br />
1 2 2<br />
R R 1 R R<br />
Cl<br />
Cl<br />
NH2 H N<br />
NH2<br />
2 H2N<br />
Cl +<br />
+ + Cl<br />
N N Cl +<br />
N<br />
N<br />
O O O O<br />
1 2 2 1<br />
R R R R<br />
CX8N 1R= 2R=C8H17-n CX12-8N 1R= C12H25-n, 2R= C8H17-n We show that calix[4]arenes bearing long alkyl chains can form micelles of 6-9 nm<br />
diameter at micromole concentration range, which can further condense different types<br />
of DNA into small and stable particles of 40-100 nm diameter. These nano-particles,<br />
which probably contain a single DNA molecule, exhibit promising transfection<br />
properties in cell culture 3 .<br />
+<br />
N<br />
N+ N +<br />
N +<br />
Cl OH<br />
Cl OH<br />
HO<br />
Cl<br />
HO<br />
Cl<br />
O O O O<br />
+ + +<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+ + +<br />
+ + + + + +<br />
++<br />
++<br />
+ + + + +<br />
+ +<br />
+<br />
+<br />
+<br />
+<br />
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+<br />
+ +<br />
+<br />
+ + +<br />
+ + + +<br />
++<br />
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-<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+ ++<br />
+ ++ ++ + + + +<br />
+ +<br />
+<br />
+<br />
+<br />
+<br />
- +<br />
+ + +<br />
+ - + + +<br />
+ + + +<br />
- - -<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+ + + +<br />
+ +<br />
- - - - - +<br />
-<br />
+ + + +<br />
++<br />
++<br />
+<br />
+ +<br />
+<br />
+ + +<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+ + +<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+ + +<br />
+<br />
+<br />
+ +<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+<br />
+ + +<br />
++<br />
++<br />
+<br />
+<br />
+<br />
+<br />
-<br />
-<br />
-<br />
-<br />
-<br />
a b c d<br />
a: chemical structure of CX8; b: its schematic view; c: nanoscopic micelle formation<br />
in aqueous solutions and d: nano-particles formed by CX8 and DNA molecule.<br />
1<br />
Rodik, R. V.; Boyko, V. I.; Kalchenko, V. I., Current Medicinal Chemistry 2009, 16, 1630.<br />
2<br />
Bagnacani, V.; Sansone, F.; Donofrio, G.; Baldini, L.; Casnati, A.; Ungaro, R., Organic Letters 2008,<br />
10, 3953; Lalor, R.; DiGesso, J.L.; Mueller, A.; Matthews, S.E.: Chem. Commun., 2007, 4907.<br />
3<br />
Rodik, R.V., Jain, N., Miroshnichenko, S.I., Richert, L., Kalchenko, V.I., Mely, Y., Klymchenko, A. S.<br />
Chemistry – A European Journal. In press.<br />
+ + +<br />
+ +<br />
+ + + + ++ ++<br />
+<br />
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Synthesis and investigation of complexing, optical and electrochemical activities of<br />
crown-containing oligothiophene derivatives<br />
Artemiy Mizerev a , Elena Lukovskaya a , Olga Fedorova a , Yury Fedorov b , Alla Bobylyova a , Anna<br />
Moiseeva a , Aleksander Anisimov a<br />
a<br />
Department of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory, 119992 Moscow,<br />
Russia, E-mail: lukov@petrol.chem.msu.ru; Fax: +7 (495) 932 85 68<br />
b<br />
A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova<br />
str., 119991, Moscow, Russia<br />
Functional oligothiophenes have attracted comprehensive interest among researchers all over the<br />
world and have actually been advanced to be among the most frequently used π-conjugated materials, in<br />
particular as active components in organic electronic devices and molecular electronics.<br />
Thiophene-containing donor-acceptor substituted systems show electron and energy transfer<br />
processes. The changes in physical properties (e.g., absorption, fuorescence, electrochemistry, etc.) of<br />
these derivatives strongly depended on the nature of both the π-conjugation and the type of donor-<br />
acceptor substitution. We introduced in conjugated system thiophene carrying 15-crown-5-ether ring<br />
directly linked to the 3- and 4-positions of the thiophene ring (1) or benzo-15-crown-5-ether (2) as a<br />
donor and pyridine residue as an acceptor.<br />
Fe +2 , Cd +2<br />
N<br />
electrochemical response<br />
S<br />
S<br />
optical response<br />
O<br />
O<br />
O<br />
O<br />
O<br />
Mg +2 , Ca +2 , Ba +2<br />
Presented molecules contains two centres of coordination: crown-ether and pyridin fragments. It is<br />
known that 15-crown-5-ether in the solution of acetonitrile forms strong complexes with cations of<br />
alkaline earth metals. Cations of heavy metals coordinate pyridin fragment with a formation of complex<br />
compounds. Coordination of cations with crown-ether fragment causes hypsochromic shift of absorbance<br />
spectra, but optical response is low. Coordination with pyridine fragment causes bathochromic shift. In<br />
this case the response is remarkable.<br />
Electrochemical activity of the complexes corresponds with the optical ones. Complex compounds<br />
with crown-ether are electrochemical inactive and there is a notable response in case of pyridin fragment.<br />
Acknowledgments to RFBR program (09-03-00550).
Supramolecular devices based on photoresposive assemblies of<br />
cucurbit[7]uril and crown-ether derived styryl and (bis)styryl dyes<br />
lga A. Fedorova, 1* Ekaterina Yu. Chernikova, 1 Yuri V. Fedorov, 1<br />
lena N. Gulakova, 1 Gediminas Jonusauskas, 2 Lyle Isaacs 3*<br />
1<br />
A. N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of<br />
Sciences, 28 Vavilova str., Moscow, 119991 Russia, fedorova@ineos.ac.ru,<br />
2<br />
<strong>Laboratoire</strong> Ondes et Matière d’Aquitaine – Bordeaux University I, UMR CNRS<br />
5798, 351 Cours de la Libiration, 33405 Talence, France,<br />
3<br />
Department of Chemistry and Biochemistry, University of Maryland, College Park,<br />
MD 20742, USA<br />
The rigid structure, good water solubility, and ability to form tight complexes<br />
with molecules and ions make CB[7] particularly attractive as a building block for the<br />
construction of supramolecular architectures and devices. This report describes the<br />
interaction of CB[7] molecular container with crown ether styryl and (bis)styryl dyes by<br />
(1) cation-dipole interactions between the positively charged dyes and the ureidyl C=O<br />
dipoles which line the CB[n] portals, and (2) hydrophobic interactions between the<br />
guest and the CB[n] host cavity. We found that the composition of the formed<br />
complexes depends on the relative stoichiometry of dye and CB[7].<br />
For the monostyrylic dyes the photoinduced moving of exited dye in CB[7]<br />
cavity was proved by analysis of the steady state and time-resolved fluorescence as well<br />
as pump-probe experimental results. The behavior of the complexes of dyes with CB[7]<br />
similar to moving of piston in cylinder which uses the light photon energy to move.<br />
Acknowledgments to RFBR program (09-03-00241) and IRG “SUPRACHEM” for<br />
financial support.
Molecular Tectonics: Design of Enantiomerically Pure Tubular Crystals<br />
Mir Wais Hosseini, Institut Le Bel, University of Strasbourg (France). E-mail:<br />
hosseini@unistra.fr<br />
The preparation of chiral porous solids is of interest for chiral transformation. However, the<br />
design of crystalline materials displaying enantiomerically pure cavities or channels still<br />
remains a challenge. A possible strategy for the generation of such materials may be based on<br />
crystals composed of helical strands provided that the dimension of the helical space can be<br />
controlled and its handedness imposed. Several examples of helical metal-organic frameworks<br />
have been reported. Although the majority of infinite helical architectures described is<br />
composed of 1-D networks. Examples of 2-D and 3-D helical networks have been also<br />
published.<br />
Using the molecular tectonics approach [1], coordination networks [2] may be obtained by<br />
combining metallatectons, i.e. metal centres or metal complexes offering at least two free<br />
coordination sites oriented in a divergent manner , with organic coordinating tectons<br />
possessing at least two divergently oriented ligating sites. For the design of helical<br />
coordination networks, one may combine ZnSiF6, forming in the presence of organic tectons<br />
an infinite pillar by bridging consecutive zinc cations by SiF62-, anions through Zn-F bonds<br />
[3]. The formation of enantiomerically pure 2-D helical coordination networks based on<br />
combinations of rigid enantiomerically pure bismonodentate tectons 1-4 (Scheme) with<br />
ZnSiF6 will be presented and discussed.<br />
[1] S. Mann, Nature, 1993, 365, 499; M. Simard, D. Su and J. D. Wuest, J. Am. Chem. Soc.,<br />
1991, 113, 4696; M. W. Hosseini, Acc. Chem. Res., 2005, 38, 313.<br />
[2] M. W. Hosseini, CrystEngComm., 2004, 6, 318.<br />
[3] M.-J. Lin, A. Jouaiti, N. Kyritsakas, M. W. Hosseini, CrystEngCom., 2009, 11,189; M.-J.<br />
Lin, A. Jouaiti, D. Pocic, N. Kyritsakas, J.-M. Planeix, M. W. Hosseini, Chem. Commun.,<br />
2010, 46, 112; M.-J. Lin, A. Jouaiti, N. Kyritsakas, M. W. Hosseini, CrystEngComm., 2010,<br />
12, 67; M.-J. Lin, A. Jouaiti, N. Kyritsakas, M. W. Hosseini, CrystEngCom., 2011, 13, 776.
The sensing of interfacial interactions of Tb-doped silica nanoparticles<br />
with various substrates through the "on-off-on" switching of Tb-<br />
centered luminescence. Mechanisms and applications.<br />
V. Burilov a,b , A. Mustafina b , V. Skripacheva b , S. Fedorenko b , O. Bochkova b , R.<br />
Zairov b , I. Antipin a,b , A. Konovalov a,b<br />
.<br />
a - Kazan Federal University, A.Butlerov Institute of Chemistry, Kremlyovskaya St.,<br />
18, Kazan 420008; b - A.E. Arbuzov Institute of Organic and Physical Chemistry,<br />
Arbuzov Street, 8, 420088 Kazan, Russia.<br />
Silica nanoparticles have gained much attention during recent decades due to<br />
their wide use in medicine and bioanalysis. Lanthanide complexes have gained a great<br />
deal of attention owing to their unique spectroscopic characteristics, including long<br />
fluorescence lifetime, large Stokes shift, and sharp line-like emission bands. Therefore<br />
lanthanide complexes are applied as dopants into silica nanoparticles. Due to good<br />
signal-to-noise ratio such nanoparticles are efficient biomarkers, while their application<br />
in biosensing is more sparsely. The present report introduces luminescent core-shell<br />
nanoparticles as the nanosized sensors, which recognize inorganic and organic<br />
substrates through the “on-off” and “off-on” switching of the emission. Various<br />
synthetic procedures have been used to modify the morphology of the core-shell<br />
nanoparticles. The comparison of photophysical properties of nanoparticles with various<br />
morphology reveals the effect of coating on the luminescence. The “on-off” switching<br />
results from the interfacial interactions of the Tb(Eu)-doped nanoparticles with so called<br />
quenching molecules and ions, such as dyes and transition metal ions. The “off-on”<br />
switching can be achieved through the competitive interfacial binding of the quenching<br />
versus nonquenching molecules. Both steady state and time resolved quenching<br />
measurements have been analyzed to distinguish the contributions of static and dynamic<br />
mechanisms in the quenching of the luminescent core through the interfacial<br />
interactions of core-shell nanoparticles with quenching molecules. Though the dynamic<br />
quenching through the energy transfer is the key mechanism, the static quenching<br />
through the readsorption and light scattering should be also taken into account.
Thermodynamic Template Effect in DCC<br />
Josè Augusto Berrocal, Roberta Cacciapaglia, Stefano Di Stefano,<br />
and Luigi Mandolini.<br />
IMC-CNR Sezione Meccanismi di Reazione and Dipartimento di Chimica,<br />
Università “Sapienza”di Roma, piazzale Aldo Moro 5, 00185, Roma<br />
joseaugusto.berrocal@uniroma1.it<br />
Dynamic Combinatorial Chemistry (DCC) studies the generation of libraries of<br />
compounds which are fully interchangeable under mild conditions. 1 The most appealing<br />
feature of DCC is the chance to amplify the yield of one of the above compounds by<br />
means of the addition of an appropriate template (an ion or a neutral molecule) which<br />
selectively binds and offers stabilization to that specific compound.<br />
The acid-catalyzed transacetalation of formaldehyde acetals is a suitable reaction for the<br />
generation of well-behaved Dynamic Libraries of cyclophane formals. In the present<br />
communication we report the experimental results related to a quantitative definition of<br />
thermodynamic template effect 2 and the results obtained with a new well-behaved<br />
dynamic library of cyclophanes based on the bis[4-(hydroxymethyl)phenyl]methane<br />
unit (Fig 1). 3<br />
Fig 1. Dynamic library based on the bis[4-(hydroxymethyl)phenyl]methane unit.<br />
References<br />
1<br />
Corbett, P. T.; Leclaire, J.; Vial, L.; West, K. R.; Wietor, J.-L.; Sanders, J. K. M.;<br />
Otto, S., Chem. Rev., 2006, 106, 3652�3711;<br />
2<br />
Berrocal, J. A.; Cacciapaglia, R.; Di Stefano, S.; Mandolini, L., manuscript in<br />
preparation.<br />
3<br />
Berrocal, J. A.; Cacciapaglia, R.; Di Stefano, S.; Mandolini, L., manuscript in<br />
preparation.
Molecular recognition of organic quests by thin layers of phosphorus-<br />
a<br />
containing dendrimer.<br />
Gerasimov A.V., a Ziganshin M.A., a Gorbatchuk V.V., a Kovalenko V.I., b<br />
Caminade A-M., c Majoral J-P. c<br />
A.M. Butlerov Institute of Chemistry, KFU, 420008, Kazan, Kremlevskaya, 18,<br />
e-mail: Alexander.Gerasimov@ksu.ru<br />
b A.E. Arbuzov Institute of Organic and Physical Chemistry, KSC, RAS, 420088,<br />
Kazan, Arbuzova, 8<br />
c<br />
Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France<br />
Dendrimers are well applicable for the elaboration of sensors, and as<br />
nanoparticle catalysts. Having tightly packed end groups, dendrimers of higher<br />
generations are selective to the size and shape of guest molecules with a preference to<br />
the smaller and less branched guests. In this respect, dendrimers are more selective than<br />
liquid or rubbery polymers, which do not have a special molecular recognition<br />
compared with ordinary liquid solvents.<br />
In present work the sorption capacity for 30 volatile guests, binding reversibility,<br />
guest desorption kinetics and guest exchange, glass transition behavior and ability to be<br />
plasticized with guest were studied for phosphorus dendrimers of the first (G1), second<br />
(G2), third (G3) and fourth (G4) generation with core >P(S)–, spacer unit p-(–O–C6H4–<br />
CH=N–N(CH3)–), branch unit –P(S)< and terminal group p-(–O–C6H4 –CHO) using<br />
quartz crystal microbalance sensor, FTIR microspectroscopy, atomic force microscopy,<br />
simultaneous thermogravimetry and differential scanning calorimetry combined with<br />
mass-spectrometry of evolved vapors. The dendrimers were found to have a different<br />
selectivity for different homological series of guests, high glass transition points without<br />
plasticization with guest even at high temperatures and saturation levels, moderate<br />
guest-binding irreversibility and ability both for effective guest exchange and<br />
independent guest sorption. These properties constitute an advantage of the studied<br />
dendrimers as receptor materials in various applications.<br />
This work was supported by RFBR 11-03-01215 and Federal Program<br />
"Research and scientific-pedagogical personnel of Innovative Russia" for 2009-2013<br />
(State number P2345).
Bioactive nanoscale supramolecular assemblies of ionic and non ionic<br />
oligoperoxide based surfactants with drugs, DNA and RNA in water<br />
O. Zaichenko 1 , N. Mitina 1 , T. Skorokhoda 1 , E. Filyak 2 , N. Boiko 2 , L. Ivanytska 2<br />
,<br />
1 1 1<br />
A. Riabtseva , M. Moskvin , V. Novikov , R. Stoika<br />
Lviv Polytechnic National University, 12 S. Bandera St., 79013, Lviv, Ukraine;<br />
Lviv Institute of Cell Biology, 14/16 M. Dragomanov St., 79005, Lviv, Ukraine<br />
E-mail: zaichenk@polynet.lviv.ua<br />
Novel heterofunctional carbon chain oligoperoxides were used as multi-site radical<br />
initiators for controlled synthesis of surface-active comb-like and block copolymers<br />
combining links and branches of cationic, anionic or/and nonionic polyethylene glycol<br />
(PEG) type. The surfactants were of controlled functionality, chain length, solubility,<br />
surface activity and reactivity. There was shown the formation of non stoichiometric<br />
intermolecular complexes via mechanisms of electrostatic interaction, due to formation<br />
of hydrogen bonds as well as a result of hydrophobic interaction providing arising<br />
nanoscale supramolecular structures in the media of various polarities. The formation of<br />
highly stable nanoscale supramolecular assemblies of oligomers and polymers of ionic<br />
and non ionic natures with low molecular weight and polymeric substances such as<br />
anionic or cationic surfactants including polyelectrolytes, antimicrobial and anticancer<br />
drugs, plasmid DNA and RNA were studied using conductometry, turbidimetry,<br />
dynamic light scattering, NMR, IR-, UV- spectroscopy and other chemical and<br />
physical-chemical techniques. The intermolecular complex formation accompanied by<br />
sharp change of physical-chemical properties of the mixtures in narrow component<br />
concentration range was observed. This witnesses the arising highly dispersed new<br />
phase comprising of micelle-like hydrophobic zones as a result of oligoperoxide<br />
surfactant and other component interaction stabilized by surfactant hydrophilic<br />
fragments. The main driving forces of the phenomenon are electrostatic and<br />
hydrophobic interactions. The formation of nanoscale hydrophobic zones in the system<br />
was confirmed by both light scattering technique and water insoluble drug<br />
solubilization. It was established that such water preparations provide essential<br />
enhancement of antimicrobial and anticancer activity due to synergism of simultaneous<br />
action of medicines and oligoperoxide based carriers.<br />
2
Towards a molecular assembly based on<br />
1,10-phenanthroline-functionalized phthalocyanines<br />
Martynov A.G. 1,2 , Gorbunova Yu.G. 1,2 , Tsivadze A.Yu. 1,2 , Sauvage J.-P. 3<br />
1<br />
A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Moscow,<br />
Russia, martynov.alexandre@gmail.com, 2 N.S. Kurnakov Institute of General and<br />
Inorganic Chemistry RAS, Moscow, Russia yulia@igic.ras.ru,<br />
3<br />
Institut de Science et d'Ingénierie Supramoléculaires, Strasbourg, France,<br />
jpsauvage@unistra.fr<br />
With the aim to broaden the family of molecular assemblies based on<br />
tetrapyrrolic scaffold, we designed and synthesized a novel phthalocyanine complex,<br />
[(MC)4Pc]Zn, bearing four lateral macrocycles containing each a phenanthroline group.<br />
The compound turned to be almost insoluble in common organic solvents due to strong<br />
aggregation. However, introduction of Cu(I) in the macrocycle coordination sites<br />
afforded soluble a complex which does not aggregate in chloroform-acetonitrile mixture<br />
as evidenced by UV-Vis spectroscopy. The attempt was made to use this complex as a<br />
precursor to synthesize a molecular assembly with novel topological properties – two<br />
phthalocyanine platforms held together by four linear ditopic ligands – “rails”. Bulky<br />
“stoppers” were introduced via click-chemistry to prevent dissociation of the assembly<br />
to individual molecular components when copper ions are removed. The target [6]rotaxane<br />
is particularly interesting as an adaptable receptor with variable size of the<br />
binding site located between the two phtalocyanine "plates".<br />
Acknowledgements: This work was performed in the framework of European Research<br />
Association “SUPRACHEM” and supported by ARCUS Alsace - Russia/Ukraine<br />
project, RFBR (grant 09-03-93117), CNRS and the Grant of the President of Russian<br />
Federation (МК-3595.2011.3).
Metallosupramolecular Polymers with Orthogonal Interactions<br />
Kerstin Anhuth and Carsten Schmuck<br />
Institute of Organic Chemistry, University of Duisburg-Essen, Universitätsstraße 7,<br />
45141 Essen, Germany.<br />
We present the synthesis of supramolecular polymers with two orthogonal binding sites<br />
based on metal-ligand binding and zwitterionic interactions. The first building block is<br />
the zwitterionic pyrrol derivative 1 which was developed by Schmuck. This compound<br />
is a self-complementary binding motive with a highly stable binding constant in DMSO<br />
and water. [1] The second building block is the 2,2´:6´2´´-terpyridine 2 which forms very<br />
stable transitional-metal-complexes with impressive photophysically properties variable<br />
through the choice of the metal. [2]<br />
Figure 1: 2-(guanidiniocarbonyl)-pyrrol-5-carboxylate-zwitterion 1 [1] and the 2,2´:6´2´´-terpyridine 2.<br />
By linkage of those two different building blocks it is possible to change the structure<br />
from the monomer through chemical signals to oligomers and polymers. Due to the<br />
right pH-range (about 6) dimers can be formed by zwitterionic interactions. The<br />
addition of metal ions provides the formation of linear or net-like supramolecular<br />
polymers.<br />
Figure 2: Schematic design of a supramolecular polymer based on three self-complementary binding-sites.<br />
[1] C. Schmuck, W. Wienand, J. Am. Chem. Soc. 2003, 125, 452-459.<br />
[2] U. S. Schubert, C. Eschbaumer, Angew. Chem. 2002, 114, 3016-3050.
Analysis of benzodiaza-15-crown-5 ether derivative binding properties<br />
by potentiometric, optical and extraction methods<br />
M. Oshchepkov , 1 O. Fedorova, 1,2,3 Yu. Fedorov 2 A. V. Anisimov 3<br />
1<br />
Mendeleev University of Chemistry and Technology of Russia,Russia, 125047 Moscow,<br />
Miusskaya sqr., 9. E-mail: maxim.os@mail.ru<br />
2<br />
A. N. Nesmeyanov Institute of Organicelement Compounds of Russian Academy of<br />
Sciences, Vavilova, 28, Moscow, 119991, GSP-1, Russia<br />
2M. V. Lomonosov Moscow State University, Vorob’evi Gori, Moscow 119991, Russia<br />
The coordination chemistry of macrocyclic ligands is a fascinating area of<br />
current research in chemistry. There is a continuing interest in the binding properties of<br />
polyazacompounds since these ambivalent ligands are able to interact with metal<br />
cations.<br />
R<br />
O<br />
O<br />
Me<br />
N<br />
N<br />
Me<br />
O<br />
Met<br />
R=<br />
C 17 H 35 NHC<br />
=<br />
HCO<br />
Ag + , Cd +2 ,Hg +2, Ba +2 , Ca +2 , Co +2,<br />
Cu +2 , Ni +2 , Pb +2 , Mg +2 , Zn +2<br />
is able to form complexes in water<br />
S<br />
+<br />
N<br />
ClO -<br />
4 Et<br />
S<br />
+<br />
N<br />
ClO -<br />
4 Et<br />
is chromophoric<br />
diazacrown ether<br />
compound<br />
extractant<br />
Our research concerns the analysis of the metal ion binding property of<br />
benzodiaza-15-crown-5 ether when different substituents is introduced into the benzene<br />
ring (derivatives 1-3 in scheme 1). Depending on the derivatives 1-3 properties the<br />
potentiometric, optical and extraction methods were used for carrying out the research.<br />
Compound 1 is formyl derivative of benzodiazacrown ether which is able to<br />
form complexes in water. The complex formation study was done by potentiometric<br />
method. The adding of chromophoric styrylic part to azacrown ether (compound 2)<br />
opens the way to study the complex formation of compound by optical spectroscopy<br />
method. So as compound 2 has got limitation in water solubility, the investigation of 2<br />
was carried out in acetonitirile solution. The final sample 3 is chromophoric diazacrown<br />
ether compound substituted by long akyl chain. Such structure allows the analysis of<br />
complex formation by extraction method. The goals of these studies have been to<br />
understand specific binding behaviour in different condition, to derive structure–<br />
function relationships and to estimate useful applications<br />
The research was support by RFBR grant and program of Russian Academy of Sciences
NOVEL PHOTORESPONSIBLE ANION RECEPTORS<br />
Kajetan Dąbrowa a , Patryk Niedbała a,b , Janusz Jurczak a,b<br />
a) Institute of Organic Chemistry PAS, Kasprzaka 44/52, 01-224 Warsaw<br />
b)<br />
The Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw<br />
kajetan.dabrowa@icho.edu.pl<br />
Coordination chemistry of anions is one of the most vivid fields of supramolecular<br />
chemistry, since anions are essential components of biological systems. [1]<br />
Despite the observed rapid development in this area over the past two decades only a<br />
small number of neutral receptors capable of selective binding in demanding solvents<br />
was developed. [2]<br />
There are known only several methods of modifying the binding properties of<br />
artificial anions receptors, i.e. changing pH, redox reactions and irradiation by light. The<br />
latter is the most interest and promising since it does not influence the charge of the<br />
receptor – it may remain neutral. After the absorption of light the geometry of receptor<br />
undergoes profound and reversible changes. So far there are only few examples of the<br />
use of light as a factor triggering the change of receptors affinity toward anions. [3]<br />
To fill this gap we synthesized and examined binding properties of neutral receptor of<br />
type 1 (a - para, b - meta substitution), which undergo reversible E-Z isomerization<br />
process controlled by light.<br />
Receptors E-1a-b and Z-1a-b show a significant change in affinity for anions in<br />
highly demanding solvent (DMSO-water mixtures). The best E/Z selectivity was<br />
achieved for carboxylate anions.<br />
[1] Gale, P. A., Chem. Soc. Rev., 2010, 39, 3746-3771, 10.1039/c001871f;<br />
[2] P. A. Gale, S.E. Garcı´a-Garrido, J. Garric, Chem. Soc. Rev., 2008, 37, 151–190, 10.1039/B715825D<br />
[3] Wang Y.,Bie F., Jiang H., Org. Lett., 2010, 12 (16), 3630–3633, DOI: 10.1021/ol1014043
Crown-containing derivatives of naphthopyrans: cation<br />
binding, photochemical and fluorescent properties<br />
A.B. Smolentsev 1 , E.M. Glebov 1 , V.V. Korolev 1 , S.V. Paramonov 2 , O.A. Fedorova 2<br />
1 – Institute of Chemichal Kinetics and Kombustion SB RAS, Novosibirsk , Russia<br />
2 - Nesmeyanov Institute of Organoelement Compounds RAS, Moscow, Russia<br />
S_art@ngs.ru<br />
Photochromic molecules containing macrocyclic moiety have attracted much<br />
interest in molecular chemistry as components of functional materials. Examples of<br />
potential applications of these compounds include: photoswitching transport through<br />
membranes, optical information storage, photoswitching extraction of metal cations.<br />
A<br />
O<br />
O<br />
O<br />
O<br />
O<br />
O<br />
B<br />
O<br />
O N<br />
O O<br />
O<br />
Scheme 1<br />
O<br />
O<br />
O<br />
O O<br />
Crown-containing naphtopyrans (chromenes) A, B, C (scheme 1) and their<br />
crownless analogues were used in the work. All studied compounds, upon UV<br />
irradiation, yield open colored forms. Then in the course of dark reaction open form of<br />
chromenes turns into colorless closed form. Moreover, naphtopyrans A and B, upon UV<br />
irradiation, undergo irreversible geometrical isomerisation.<br />
All studied crown-containing compounds form host-guest complexes with Mg 2+ ,<br />
and Ba 2+<br />
cations. The presence of metal cations in the solution leads to partial<br />
destabilization of the photoinduced form of С and consequently decreases its lifetime.<br />
Nevertheless, complexation doesn’t effect on the spectroscopic and kinetic properties of<br />
the colored forms of A and B.<br />
Naphthopyran B fluoresces with maxima at 530 nm. It’s remarkable that only<br />
trans- isomer of B is fluorescent, while cis- isomer is not. For this reason trans-cis<br />
isomerisation of B leads to disappearance of fluoresce. The presence of metal cations in<br />
the solution also leads to significant decrease of fluorescence quantum yield of B.<br />
This work was supported by the Russian Foundation of Basic Research (grants<br />
№11-03-00268 and №09-03-00283).<br />
C<br />
O
THIACALIX[4]ARENES: SYNTHESIS AND MOLECULAR<br />
RECOGNITION OF SOME ANIONS<br />
A.A. Yantemirova,<br />
R.V. Nosov, A.N. Yagarmina, I.I. Stoikov, I.S. Antipin,<br />
A.I. Konovalov<br />
A.M. Butlerov Chemical Institute, Kazan (Volga Region) Federal University, 420008<br />
Kremlevskaya, 18, Kazan, Russian Federation. E-mail: anelia_86@mail.ru<br />
The potential uses of products of supramolecular chemistry and the ability of<br />
these products to exhibit properties typical of highly organized biomolecules, e.g.<br />
molecular recognition, catalysis, active and selective transport, has promoted research in<br />
the chemistry of synthetic receptors. The design and synthesis of systems, capable of<br />
recognizing anions, continues to be one of the challenging problems in supramolecular<br />
chemistry. For the synthesis of anion receptors we had proposed to use derivatives of<br />
thiacalixarene with different substituents at the lower rim. Regioselective<br />
functionalization of the lower rim of the thia-analog of calixarene is significantly<br />
complicated because of the difficulties in selection of the reaction conditions (ratio of<br />
reagents, temperature and duration of the synthesis). Therefore, synthesis of<br />
thiacalix[4]arenes with different substituents at the lower rim is commonly more<br />
difficult than that of the other similar macrocycles substituted with identical fragments.<br />
New thiacalix[4]arenes containing amide, hydroxyl and ester fragments differently<br />
substituted at the lower rim were synthesized. For the synthesis of stereoisomers of p-<br />
tert-butyl thiacalix[4]arene with ester and amide fragments at the lower rim, the<br />
template effect of alkali metal cations was used. Receptor properties of the newly<br />
synthesized thiacalix[4]arene derivatives toward some tetrabutylammonium salts n-<br />
Bu4NX (X =F - , Cl - , Br - , I - , CH3CO2 - , H2PO4 - , NO3 -<br />
) were studied by UV spectroscopy.<br />
Selective receptors for fluoride ion and dihydrogen phosphate ion were found.<br />
This work was supported by Federal Program "Research and scientific-<br />
pedagogical cadres Innovative Russia" in 2009-2013 years (№ P1295 on 9 June 2010),<br />
RFBR (09-03-00426, 10-03-92661-NSF) and the Program of the President of the<br />
Russian Federation for the State support of young Russian scientists - Doctors of<br />
Sciences (MD-2747.2010.3).
Tuning of Knoevenagel-type substrate reactivity and optical properties<br />
by supramolecular interactions<br />
Nadine Allendörfer & Jean-Marie Lehn*<br />
<strong>Laboratoire</strong> de Chimie Supramoléculaire, ISIS<br />
Université de Strasbourg<br />
8 Allée Gaspard Monge, 67000 Strasbourg (France)<br />
lehn@isis.u-strasbg.fr<br />
Dynamic chemistry uses reversible reactions of molecular and supramolecular entities.<br />
Here a covalent or non-covalent linkage of the components is possible. Dynamic<br />
covalent chemistry (DCC) has become a useful tool in material science and drug design.<br />
Some examples of reversible reactions used in DCC are amine/carbonyl condensations,<br />
peptide exchange, disulfide exchange, trans-esterifications, Diels-Alder condensations<br />
and olefin metathesis. In this work, we have focused on the Knoevenagel reaction,<br />
which allows the dynamic formation and cleavage of C=C double bonds.<br />
The reactivity of Knoevenagel-type substrates like benzylidenes, derived from<br />
aldehydes and barbituric acid, can be influenced by their structure. Therefore, we<br />
modified the aldehyde components to obtain polyene benzylidenes. Such donor-<br />
acceptor polyenes have interesting linear and nonlinear optical properties and have<br />
potential applications in telecommunications, optical data storage, and optical<br />
information processing.<br />
The reactivity and optical properties of Knoevenagel-type components can also be tuned<br />
by supramolecular interactions. An H-bond-mediated molecular recognition of various<br />
benzylidenes and receptors is observed. A comparative study of the reactivity and<br />
optical properties of Knoevenagel-type substrates with and without supramolecular<br />
influence was made.
Conducting polymers with anion binding sites for potential sensing<br />
applications<br />
Krzysztof Bąk, Michał J. Chmielewski *<br />
Conducting polymers are highly promising materials for sensing applications, in part because<br />
their conjugated, molecular wire-like structures offer high potential for signal amplification. Yet, their<br />
potential in anion sensing is largely underdeveloped.<br />
1,8-Diaminocarbazole is a new, particularly attractive building block for the construction of anion<br />
receptors, developed in our laboratory. It combines enhanced hydrogen bonding ability (compared to<br />
pyrrole), rigidity and outstanding synthetic versatility with the presence of chromophore and<br />
fluorophore. Moreover, it undergoes facile electropolymerisation into a π-conjugated, conducting<br />
polymer with highly promising properties. Thus, appropriately functionalised derivatives of 1,8diaminocarbazole,<br />
having both an anion binding site and free amino group which is necessary for<br />
polymerisation, may serve as precursors of conducting polymers with anion sensing properties.<br />
Interestingly, such polymers may function as triple channel sensors, displaying colorimetric,<br />
fluorescent and electrochemical response to anionic guests.<br />
Selective protection of only one amino group of 1,8-diaminocarbazole was achieved in ca.<br />
50% yield using (Boc)2O in THF. This opened an easy access to a variety of amide, urea and thiourea<br />
derivatives with one amino group free and ready for polymerisation. Preliminary electrochemical<br />
investigations confirmed successful electropolymerisation of a simple benzamide derivative.<br />
i/A<br />
8.0µ<br />
7.0µ<br />
6.0µ<br />
5.0µ<br />
4.0µ<br />
3.0µ<br />
2.0µ<br />
1.0µ<br />
0.0<br />
-1.0µ<br />
-2.0µ<br />
-3.0µ<br />
-0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0<br />
E/V<br />
i/A<br />
2.0µ<br />
1.6µ<br />
1.2µ<br />
800.0n<br />
400.0n<br />
0.0<br />
-400.0n<br />
-800.0n<br />
-1.2µ<br />
-0.4 -0.2 0.0 0.2 0.4<br />
E/V<br />
On the left: voltamperogram received<br />
during polymerization proving the<br />
formation of conducting polymer.<br />
On the right: electrical answer of the<br />
system obtained during preliminary<br />
electrochemical studies.
FRET based distance measurements on vesicle surfaces - Towards the<br />
dynamic recognition of multivalent target molecules<br />
Stefan Balk a , Benjamin Gruber a , Tobias Lang a , Burkhard König a, *<br />
a<br />
University of Regensburg, Universitätsstraße 31, 93053 Regensburg<br />
e-mail: burkhard.koenig@chemie.uni-regensburg.de<br />
Mimicking recognition processes at natural cell membranes we recently reported synthetic vesicles<br />
with multi-receptor surfaces as chemosensors for small biomolecules. [1] Based on these results we<br />
want to develop a simple model system for the dynamic recognition of multivalent target molecules by<br />
multiple membrane-embedded receptors equipped with FRET labels.<br />
Figure 1. A multivalent biomolecule with two different ligands binding to two fluorescent labeled<br />
receptor molecules, embedded in a membrane and detected via FRET.<br />
The influence of analyte binding towards the FRET distances was investigated by emission titrations.<br />
The investigation of these dynamic interactions is part of an approach towards imprinted vesicles with<br />
ordered surfaces that perfectly match a templating target molecule.<br />
____________________<br />
[1] B. Gruber, S. Stadlbauer, A. Späth, S. Weiss, M. Kalinina, B. König, Ang. Chem. Int. Ed. 2010, 49,<br />
7125.
Rigid Luminescent Bis-Zinc (II)–Bis-Cyclen Complexes and Non-<br />
Covalent Protein Labelling in Aqueous Solution<br />
Mouchumi Bhuyan,<br />
Evgeny Katayev, Stefan Stadlbauer, Itaru Hamachi,<br />
Burkhard König<br />
The selective luminescent labelling of proteins by markers is an important quest and an<br />
ongoing challenge in molecular biology. Covalent labelling uses reactive dyes or<br />
genetic fusion of fluorescent proteins, for example, green fluorescent proteins (GFPs).<br />
Non-covalent labelling strategies employ antibodies or snap tags. Recently a new high<br />
II<br />
affinity peptide tag – artificial probe pair orthogonal to the His tag– Ni –NTA pair has<br />
been developed by Hamachi group for protein labeling, employing coordination<br />
chemistry and multivalent interaction between a genetically encodable oligoaspartate<br />
sequence (D4-tag) and a corresponding oligonuclear Zn II –Dpa complex. Because<br />
artificial zinc dipicolylamine (Zn II –Dpa) receptors and zinc-1,4,7,10-<br />
tetraazacyclododecane (Zn II –cyclen) complex derivatives are both known for their<br />
application as phosphate binders under physiological conditions, we considered using<br />
Zn II –cyclen derivatives as alternative artificial probes for the developed artificial probes<br />
for oligoaspartate (D4- tag) and oligoglutamate (E4-tag) tag sequences. Although the<br />
coordination geometry of Zn II –Dpa and Zn II –cyclen is rather different, Zn II –cyclen<br />
derivatives show a comparable high binding affinity and fluorescence response and may<br />
therefore be used as an alternative artificial non-covalent protein marker. The binding<br />
affinity studies of the synthesized receptors to the genetically encodable tag proteins<br />
will be presented in detail. i<br />
i M. Bhuyan, E. Katayev, S. Stadlbauer, H. Nonaka, A. Ojida, I. Hamachi, B. König, Eur. J. Org. Chem.<br />
2011, 2807–2817
Synthesis and supramolecular association of heteroleptic<br />
terbium (porphyrinato)(crownphthalocyaninates)<br />
Birin K.P. , Kamarova K.A., Gorbunova Yu.G., Tsivadze A.Yu.<br />
A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS<br />
N.S. Kurnakov Institute of General and Inorganic Chemistry RAS<br />
Leninsky pr., 31, Moscow, Russia, 119991.<br />
E-mail: yulia@igic.ras.ru, kirill.birin@gmail.com<br />
Sandwich type lanthanide complexes with porphyrins and phthalocyanines are<br />
attractive as rigid cores for development of selective receptors. Modification of<br />
compounds with crown-ether moieties allows binding of alkali cations and formation of<br />
supramolecular architectures. The only one paper is devoted to design of such type of<br />
heteroleptic receptors, - europium (porphyrinato)((15-crown-5)-phthalocyaninates) [1].<br />
In present work we report on the synthesis of alkali cations receptors based on terbium<br />
triple-decker (porphyrinato)((15-crown-5)-phthalocyaninates).<br />
[Br4TPP]Tb[(15C5)4Pc]Tb[Br4TPP] (1) [Br4TPP]Tb[(15C5)4Pc]Tb[(15C5)4Pc]<br />
(2)<br />
The triple-decker terbium complexes Tb2[Br4TPP]2[(15C5)4Pc]<br />
(1) and<br />
Tb2[Br4TPP][(15C5)4Pc]2 (2) were synthesized by interaction of terbium<br />
monoporphyrinate with double-decker compounds with yields of 48% and 63%,<br />
respectively. The spectrophotometric titration of the heteroleptic triple-deckers with<br />
K[BPh4] revealed that receptor 1 is unable to bind K +<br />
because of sterical hindrances.<br />
The unsymmetrical complex 2 shows hypsochromic shift of absorption bands upon<br />
titration, which can be attributed to formation of supramolecular dimers, similar to [1].<br />
Acknowledgements. The authors are grateful to Foundation of Russian President<br />
for support of young scientists (grant MK-212.2010.3), RFBR (grant 11-03-00968) and<br />
Russian Academy of Sciences for financial support.<br />
1. M. Bai, M. Bao, C. Ma, et al. J. Mater. Chem. 2003, 13 (6), 1333-1339.
Photophysical properties of surfactant modified luminescent Tb-doped<br />
silica nanoparticles in presence of dyes as quenchers of Tb luminescence.<br />
O.D. Bochkova,<br />
A.R. Mustafina, V.V. Skripacheva, Yu.G. Elistratova, A.R.<br />
Mukhametshina, S.E. Solovieva, A.I. Konovalov.<br />
A.E. Arbuzov Institute of Organic and Physical Chemistry of Kazan Scientific Center<br />
of RAS, Kazan, Russia.<br />
Lanthanide-doped silica nanoparticles have gained a great deal of attention owing to<br />
lanthanides unique spectroscopic characteristics, including long fluorescence lifetime,<br />
large Stokes shift, and sharp line-like emission bands. The metal complex-doped<br />
nanoparticles have an advantage over a single complex, since the silica shell protects the<br />
metal complex from photodegradation, while the surface of the nanoparticle can be<br />
functionalized by various anchoring groups. The silica surface decoration is aimed to<br />
increase the colloidal stability of nanoparticles, as well as to develop their receptor<br />
properties towards biotargets. The decoration of the silica surface through the noncovalent<br />
interactions represents more convenient alternative to covalent anchoring due<br />
to the lack of multistep purification procedures.<br />
The approach to sense the adsorption of various surfactants onto silica surface of Tbdoped<br />
nanoparticles will be discussed. It is based on quenching of Tb luminescence by<br />
dyes. A universality of this approach will be shown. Regularities of change of surfactant<br />
modified Tb-doped silica nanoparticles luminescence and quenching mechanisms of<br />
Tb-luminescence by dye molecules will be reported. The methods of dynamic light<br />
scattering and luminescent spectroscopy were used.<br />
We thank RFBR<br />
(projects N 09-03-12260<br />
Ofi_M and 10-03-<br />
00352-а) for financial<br />
supporting.
The features of the coordination networks formation of meso-mono-<br />
and di-phosphorylated zinc porphyrins<br />
Yu.Yu. Enakieva a,b , Yu.G. Gorbunova a,b , A. Bessmertnykh c , S.E. Nefedov b , C. Stern c ,<br />
A.Yu. Tsivadze a,b and R.Guilard c<br />
a A.N. Frumkin Institute of Physical Chemistry and Electrochemistry of RAS, Moscow<br />
b N.S. Kurnakov Institute of General and Inorganic Chemistry of RAS, Moscow<br />
c<br />
Universite de Bourgogne ICMUB UMR CNRS 5260, 9 avenue Alain Savary, 21078<br />
Phosphorylated porphyrins are promising models for elaboration of highly<br />
ordered supramolecular systems of various architectures due to features of P=O-groups<br />
and number, nature and arrangement of other peripheral functional groups of porphyrin.<br />
N<br />
X<br />
N N<br />
`Y Zn<br />
X<br />
Previously we have developed a general method to prepare new phosphoryl-<br />
N<br />
Y<br />
Y=Y`= PO(OEt) 2, X= C6H5 (1a) ; Y`= H (2a)<br />
Y=Y`= PO(OEt) 2, X= C6H5CN (1b) ; Y`= H (2b)<br />
Y=Y`= PO(OEt) 2, X= C6H5CH3 (1c) ; Y`= H (2c)<br />
Y=Y`= PO(OEt) 2, X= C6H5OCH3 (1d) ; Y`= H (2d)<br />
Y=Y`= PO(OEt) 2, X= C6H5COOCH3 (1e) ; Y`= H (2e)<br />
studied by means of X-Ray diffraction analysis.<br />
substituted porphyrin receptors (1a-<br />
e, 2a-e). The optimal conditions of<br />
crystal growth for these compounds<br />
were found and its structures were<br />
It was shown [1] that the self-assembly of 1а leads to the formation of 2D<br />
coordination network. Introduction of linear CN-group (1b) doesn`t change the<br />
architecture of final network. However, when bulky electron-donating CH3-group<br />
is<br />
introduced (1c), dramatic changes of crystal structure occur leading to the formation of<br />
pseudo-3D assembly constructed from alternating molecules, containing zinc ions with<br />
coordination numbers equal to 5 and 6. Analogous self-assembling architecture was<br />
observed for the complex 1d. Further increasing of the bulkiness of the phenyl-group<br />
substitutes in 1e leads to even more sophisticated structure.<br />
It should be note that the self-assembling of mono-phosphorylated porphyrins<br />
(2a-e) also depends on the nature of peripheral substituent. Thus, the complex 2a forms<br />
1D linear polymer, while the complex 2b forms dimers where the phosphoryl-group of<br />
one molecule binds to the zinc ion of the other one. Self-assembling of complexes 2c-e<br />
leads toward “calyxarene-like” structure including 4 zinc-porphyrinato-units.<br />
Acknowledgements: This work was performed in the framework of French-Russian Associated<br />
Laboratory “LAMREM” and “SUPRACHEM”, supported by ARCUS 2007 Burgundy-Russia project,<br />
Russian Foundation for Basic Research, the CNRS and Russian Academy of Sciences.<br />
[1] Enakieva Y.Y., Bessmertnykh A.G., Gorbunova Y.G., et. al. Org. Lett., 2009, 11, 3842-3845.
Thiacalix[4]arenes with triple bonds on the lower rim : synthesis<br />
and reactivity.<br />
N.A. Epifanova a , E.V.Popova a , S.V. Kharlamov a , Sh.K. Latipov a , S.F. Vasilevsky<br />
b<br />
a<br />
R<br />
b , S.E. Solovieva a , I.S. Antipin a .<br />
A.E. Arbuzov Institute of Organic and Physical Chemistry KazCS RAS, Russia,<br />
420088, Kazan, Arbuzov str. 8. E-mail:<br />
S<br />
4<br />
O-CH2-C CH<br />
OCH2C C<br />
R1 1 2 3<br />
epifanova@iopc.ru<br />
Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian<br />
Academy of Sciences, 630090, Novosibirsk, Russian Federation.<br />
(Thia)calix[4]arenes are useful platforms for obtaining of three-dimensional<br />
structures – building blocks for construction of supramolecular systems. They are well-<br />
known as molecular receptors for bounding of different type guests: metal ions, organic<br />
substrates and metal complexes. Multiple bonds make (thia)calix[4]arene able to form<br />
“click-chemistry” products, which could be used for making of new generation<br />
biologically active compounds, selective complexing agents and building blocks for<br />
obtaining of metal-organic structures (MOF’s), probes for biomedical applications.<br />
In the present work alkylation reactions thiacalix[4]arenes by propargyl bromide<br />
in the presence of alkali metal carbonates were systematically studied. Regularity of<br />
different stereoisomeric forms formation in dependence of used base nature were<br />
established. It was shown, that classical alkylation with using of propargyl bromide<br />
gives the possibility to obtain tert-butyl-thiacalix[4]arene and thiacalix[4]arene<br />
derivatives (1) with triple bonds at the lower rim in different conformations in one step.<br />
(Thia)calix[4]arenes with propargyl groups were used in Sonogashira cross-<br />
coupling (2) as well as in“click-chemistry” (3) reactions.<br />
Structure and stereoisomeric forms of new compounds were characterized with the use<br />
of 1D and 2D NMR, IR spectroscopy and mass-spectrometry.<br />
R<br />
X 4<br />
The work was supported by the Russian Foundation for Basic Research (grant no. 10-<br />
03-00728).
Catalysts within Dynamic Combinatorial Libraries<br />
Hugo Fanlo Virgós,<br />
Sijbren Otto*<br />
Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of<br />
Groningen, Groningen, The Netherlands.<br />
How to predict the structure of catalysts that selectively target specific substrates is one<br />
of the biggest challenges that chemistry currently faces. Very often, the catalystsubstrate<br />
affinity needs a combination of structurally and chemically complementary<br />
features between both molecular entities that are difficult to anticipate. Our approach to<br />
identify catalysts by using Dynamic Combinatorial Chemistry simplifies catalyst design<br />
by letting the molecules choose to interact according to their own “preferences”. By<br />
mixing a combination of molecular building blocks able to form reversible hydrazone<br />
bonds (-C(O)-N(H)-N=C-, see scheme) a set of potential catalysts can be selfassembled.<br />
The interactions of these potential catalysts with the substrate will determine<br />
the stability of the host-guest adducts (thus their relative population) and are a first<br />
requirement for catalysis. By screening the combinatorial libraries for affinity for a<br />
Transition-State Analog we should be able to predict if a transition state of a catalyzed<br />
reaction could also interact and therefore be stabilized.<br />
=<br />
O<br />
N<br />
N C<br />
H H
2<br />
ROLE OF SPACER IN THE PHASE-TO-PHASE LAYER<br />
OF POLYMERIC MICROSPHERES AT CONSTRUCTING OF<br />
BIOTEST-SYSTEMS<br />
1 Fedorova O.V., 1 Zayarnyuk N.L., 2 Stanishevskiy Ya.M.,<br />
2 Gritskova I.A., 1 Novikov V.P.<br />
1<br />
National University “Lviv Politechnic”<br />
79013, Lviv, Bandery str., 12, e-mail: vnovikov@polynet.lviv.ua<br />
Moscow State Academy of Fine Chemical Technology n. of M.V. Lomonosov<br />
When constructing biotest-systems on viral and infectious diseases specific<br />
immunoglobulins G (Ig G) have been used as bioligands. The immobilization of these<br />
immunoglobulins on the surface of functional polymeric microspheres proposed to<br />
through spacer, protein A (S. aureus). The choice of spaser is conditioned by its<br />
capability of the affine interaction with Fc - fragment of molecule. In this case Fab -<br />
fragment of Ig G provides more effective availability of binding to antigen’s<br />
determinants with potential causative agent of a disease.<br />
Optimal concentrations of protein A (0,05 mg/ml) on the surfaces of polymeric<br />
microspheres and minimum dilutions of serums, at which particles of conjugates<br />
"polymeric microsphere - protein A" spontaneously aggregate, have been determined.<br />
The orientation of Ig G molecule with hydrophilic Fab-fragment into the water<br />
phase results in lyophilization of a surface of a particle, which is the condition of the<br />
development of structural - mechanical factor by Rebinder. The creation of such type of<br />
diagnostic biotest-systems doesn’t require a preliminary selection and purification of<br />
specific molecules of Ig G, which are contained in γ- globulin’s fraction required.<br />
Stability of the conjugate "polymeric microsphere (PM) - protein A" allows using it<br />
more than 6 months.<br />
Biotest-systems of different specificity for the following diseases have been<br />
developed using highly titratable serums and universal conjugate "PM - protein A":<br />
yersiniosis (Y. enterocolitica); salmonellosis (S. pullorum); leptospirosis (L. conicula);<br />
for the chicken infectious bronchitis virus stamm Н120.
SYNTHESIS AND COMPLEXATION ABILITIES OF<br />
HYPERBRANCHED STRUCTURES BASED ON<br />
THIACALIX[4]ARENE<br />
Galukhin A.V., Mostovaya O.A., Antipin I.S., Stoikov I.I., Kazan Federal<br />
University, 18 Kremlyovskaya st., Kazan, e-mail: and_galuhin@mail.ru<br />
Hyperbranched macromolecules functionalized by polydental fragments are widely<br />
used for highly effective molecular recognition of various biologically relevant<br />
compounds, including biopolymers. Dendrimers based on p-tert-butylthiacalixarene<br />
have such interesting properties as high concentration of binding sites, highly developed<br />
surface and porosity. Thiacalixarene derivatives´ ability for molecular recognition of<br />
biologically relevant molecules´ surface is provided by conformational mobility of<br />
dendrimer´s “branches” and spatial organization of functional groups, forming<br />
complementary binding sites.<br />
In this work various dendrimers based on thiacalixarene in 1,3-alternate<br />
configuration were synthesized. Structures of obtained compounds were characterized<br />
by 1D and 2D NMR-spectroscopy, IR-spectroscopy, mass-spectrometry and elemental<br />
analysis. Complexation abilities of synthesized macrocycles with DNA of salmon sperm<br />
and calf thymus DNA were investigated by complex of spectroscopic methods: UV- and<br />
fluorescent spectroscopy, dynamic light scattering method.<br />
The financial support from Federal Program "Research and scientific-pedagogical<br />
cadres Innovative Russia" in 2009-2013 years (№ P1295 on 9 June 2010), RFBR (09-<br />
03-00426, 10-03-92661-NSF) and the Program of the President of the Russian<br />
Federation for the State support of young Russian scientists - Doctors of Sciences (MD-<br />
2747.2010.3) is gratefully acknowledged.
Silica Nanoparticles with Proton Donor and Proton<br />
Acceptor Groups: Synthesis and Aggregation<br />
Gorbachuk Vl.V., Meleshina M.V., Yakimova L.S.,<br />
Antipin I.S., Stoikov I.I., Zharov, I.<br />
Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., Kazan,<br />
e-mail: vladimirgorbachuk@gmail.com<br />
Silica particles attract much attention due to their useful properties, which open numerous<br />
opportunities for the preparation of functional nanomaterials. Functionalized silica particles are<br />
relatively easy to prepare in a wide range of sizes and morphology, they can be functionalized with<br />
various organic groups, and possess high stability. Materials based on these particles have unique<br />
mechanical, thermal, optical, electronic and biological properties and find application in catalysis,<br />
drug delivery, sensors, etc.<br />
The effects of precursor structure and polycondensation conditions on the properties of hybrid<br />
nanoparticles synthesized from organo-trimethoxysilanes were studied. Hybrid nanoparticles<br />
containing groups capable of forming hydrogen bonds were synthesized from functional derivatives<br />
of 3-aminopropyltrimethoxysilane.<br />
We have demonstrated that all these nanoparticles form aggregates in solution, and that the size of<br />
these aggregates depends on solution pH, ionic strength and solvent polarity. Therefore, by changing<br />
the pH of the solutions, it is possible to control the size of the nanoparticle aggregates. For<br />
phenylurea-functionalized nanoparticles, three different synthetic methods have been used, allowing<br />
to relate the composition of these nanoparticles to their aggregation behavior.<br />
. Structures of obtained compounds and particles were characterized by NMR-, IR-spectroscopy,<br />
mass-spectrometry, elemental analysis and combined TG-DSC. Aggregation behavior was studied<br />
by DLS and AFM methods.<br />
Acknowledgments: The financial support from RFBR (10-03- 92661-NSF), the Program of the<br />
President of the Russian Federation for the State support of young Russian scientists—Candidates of<br />
Sciences (MK-6390.2010.3) and NSF MWN grant (DMR-1008251) is gratefully acknowledged.
Towards a Light Driven Proton Pump<br />
Britta Hesseler,<br />
Melanie Zindler, Ulrich Lüning*<br />
Otto-Diels-Institut für Organische Chemie, Olshausenstr. 40, 24098 Kiel, GER<br />
bhesseler@oc.uni-kiel.de, luening@oc.uni-kiel.de<br />
Light driven uphill transport of protons is an essential process in nature. In the<br />
photosynthetic apparatus, light energy is used to pump protons across a cell membrane.<br />
Scheme 1 depicts our model system. The proton transfer is realized by a photoswitchable<br />
acid, like 2-(2,4-dinitrobenzyl)pyridine (DNBP), attached to a rotaxane.<br />
Scheme 1: Uphill proton transfer by a rotaxane. Due to electrostatic repulsion the macrocycle moves<br />
along the axle.<br />
Upon irradiation, the photo-switchable acid tautomerizes to a more acidic form and<br />
switches back in a thermal reaction (scheme 2).<br />
Scheme 2: Tautomers of DNBP with different acidity.<br />
Several novel DNBP derivatives were successfully synthesized and for this, a new<br />
method to obtain di- and trinitrobenzyl substituted pyridine derivatives was<br />
developed. [1] Furthermore several axles and macrocycles [2]<br />
were synthesized to build a<br />
[2]rotaxane via a slipping process.<br />
R<br />
R<br />
R<br />
I<br />
H<br />
N<br />
N<br />
O<br />
Scheme 3: Synthesized axles and macrocycles for the rotaxane formation.<br />
O<br />
O<br />
R<br />
R<br />
R = H, t-butyl<br />
[1] A. Frey, C. Goeschen, C. Näther, U. Lüning, R. Herges, J. Phys. Org. Chem. 2010, 23, 1093-1098.<br />
[2] U. Lüning, E. Mak, M. Zindler, B. Hartkopf, R. Herges, Eur. J. Org. Chem. 2010, 4932-4940.<br />
R<br />
‚<br />
R<br />
O<br />
N<br />
27<br />
-<br />
39<br />
O<br />
O O<br />
R‘= H, OMe
An efficient [3]catenane formation in a dynamic combinatorial library<br />
Jianwei Li and Sijbren Otto<br />
University of Groningen, Centre for System Chemistry, Stratingh Institute, Nijenborgh 4, 9747 AG<br />
Groningen, The Netherlands<br />
E-mail: Jianwei.li@rug.nl<br />
Catenanes, consisting of two or more interlocked macrocyclic rings, often exhibit<br />
markedly novel properties 1 . Although there are several strategies to synthesize this kind<br />
of molecules, synthetic challenges still remain 1 . Dynamic combinatorial chemistry is a<br />
useful tool to explore synthetic receptors and ligands for biomolecules 2 . Dynamic<br />
combinatorial libraries (DCLs) are produced by linking building blocks together using a<br />
reversible reaction, resulting in a thermodynamically controlled product distribution.<br />
Addition of a guest or a biomolecule shifts the distribution to those library members that<br />
bind best to the external target; a process referred to as templating. Considering the<br />
interaction between cyclodextrin homologues and azobenzene derivatives is strong, we<br />
set up a library using β-cyclodextrin and a dithiol-azobenzene derivative. We have<br />
found that two molecules of β-cyclodextrin were interlocked on one disulfide bonds<br />
linking tetramer macrocycle. The yield of the [3]catenane formation is 95%. This<br />
efficient synthesis of catenane by is proved by HPLC/MS and 1<br />
H NMR. These results<br />
provide a new strategy for synthesizing catenane.<br />
1. O. S. Miljanic, J. R. Heath and J. F. Stoddart, J. Am. Chem. Soc., 2007, 129, 8236-8246.<br />
2. (a) P. T. Corbett, J. Leclaire, L. Vial, K. R. West, J. L. Wietor, J. K. M. Sanders and S. Otto, Chem.<br />
Rev. 2006, 106, 3652-3711. (b) R. A. R. Hunt and S. Otto, Chem. Commun. 2011, 47, 847-858.
HPLC study of the complexation of calix[4]arenephosphonic<br />
acids with amino acids<br />
O<br />
HO<br />
P<br />
HO<br />
Kalchenko O.I., Cherenok S.O., Yushchenko O.A., Kalchenko V.I.<br />
OH<br />
OH<br />
OPr PrO<br />
OH<br />
Institute of Organic Chemistry, National Academy of Sciences<br />
of Ukraine02660, Kiev-94, Ukraine, E-mail vik@ioch.kiev.ua<br />
Calix[n]arenes [1] composed of phenolic units linked via methylene groups<br />
have been studied as cavity-shaped host molecules able to recognize a wide range of<br />
guest molecules. It was shown by HPLC method calixarenes form supramolecular<br />
complexes with amino acids [2-4].<br />
Binding constants of calixarenephosphonic acids 1-5 complexes with amino<br />
acids (Gly, Pro, Arg, Ala, Phe, Tyr, Trp) and tetrapeptide (Gly-Pro-Arg-Pro) in solution<br />
had been determined by high-performance liquid chromatohraphy (HPLC) in water-<br />
organic solution.<br />
O<br />
HO<br />
P<br />
HO<br />
OH<br />
OH<br />
OPr PrO<br />
OPr<br />
3<br />
HO<br />
HO<br />
O<br />
HO<br />
P<br />
HO<br />
OH<br />
OH<br />
OPr PrO<br />
OH<br />
P OH<br />
O<br />
HO<br />
HO<br />
O<br />
HO<br />
P<br />
HO<br />
OH<br />
OPr<br />
OPrPrO<br />
OPr<br />
P OH<br />
1 2 3 4 5<br />
Binding constants of the calixarene complexes (1:1) with аmіno acids were<br />
within the region 16000-48000 M -1 . Molecular modelling of the calixarene complexes<br />
were performed. The factors influencing the calixarene complexation: a) Conformation<br />
and hydrophobicity of calixarene-Host cavity; b) Nature and quantity of the substituents<br />
at the upper and the lower calixarene rim; c) Nature, size and quantity of the<br />
substituents in the Guest molecules, size and structure of the Guest molecules. It was<br />
established the correlation between KA<br />
amino acids.<br />
1. Gutsche, C.D. (2008). Calixarenes revisited; The Royal Society of Chemistry, Cambridge, England.<br />
2. Kalchenko O.I., Perret F., Coleman A.W. J. Chem. Soc. Perkin Trans. 2. 258 (2001).<br />
3. Kalchenko O.I., Da Silva E., Coleman A.W. J. Incl. Phenom., 43, 305 (2002).<br />
4. Kalchenko O.I., Cherenok S.O., Rodik R.V., Drаpаilo A.B., Міrоshnichеnkо S.I.,<br />
Kаlchеnkо V.I. Phosphorus, Sulfur, and Silicon, In press.<br />
O<br />
O<br />
HO<br />
P<br />
HO<br />
HO O<br />
O<br />
OH<br />
HO P<br />
HO P<br />
HO<br />
O<br />
OPr<br />
OPr PrO<br />
OPr<br />
P OH<br />
OH<br />
P<br />
OH<br />
of the calixarene complexes and properties of<br />
HO<br />
HO<br />
P<br />
O<br />
O<br />
P O H<br />
OH<br />
OH<br />
P<br />
OH<br />
O
UO2 2+ /XO4 - /Tf2N -<br />
System (X=Re, Tc) in Various Ionic Liquids and<br />
Comparison with Water and Acetonitrile<br />
O. Klimchuk a, c , A. Ouadi a , S. Georg a , I. Billard a , C. Gaillard<br />
a) IPHC, DRS/CHNU, 23 rue du Loess, 67037 Strasbourg Cedex 2, France<br />
b) Institut de Physique Nucléaire de Lyon, 4 rue Enrico Fermi, 69622<br />
Villeurbanne, France<br />
c) Institute of Organic Chemistry, Ukraine, Murmanska str., 502660, Kyiv-94,<br />
Ukraine<br />
Room Temperature Ionic Liquids (RTILs) are a class of “green” solvents which<br />
have been intensively studied in the past 10 years in different fields of extraction and<br />
nuclear chemistry. Their physico-chemical properties are easily tunable by changes in<br />
their chemical structure, so that they are often called “design solvents”. Although such<br />
aspects are indeed rather interesting in view of potential industrial applications, to our<br />
opinion, the unusual solvation properties of these media are a much more appealing<br />
advantage.<br />
The complexation of perrhenate (ReO4 - ) and pertechnetate (TcO4 - ) anions by the<br />
uranyl (UO2 2+ ) cation is investigated by spectroscopic (UV-Vis, luminescence and<br />
EXAFS) means in water, acetonitrile and three different hydrophobic ionic liquids (ILs)<br />
(tributylmethylammoniumTf2N, trimethylbutylammoniumTf2N and 1-methyl-3butylimidazoliumTf2N,<br />
where Tf2N – stands for (CF3SO2)2N -<br />
).<br />
The results of complexation and extraction will be presented. It will be shown<br />
that XO (X = Re, Tc) behaves as a weak ligand in aqueous solution and as strong<br />
ligand in acetonitrile and in the ILs.<br />
4 -<br />
b
Novel fluorescent sensors based on crown ether containing derivatives<br />
of 2-styrylphenanthroline<br />
Kolosova O.Yu. 1 , Gulakova E.N. 1 , Shepel’ N.E. 1 , Fedorov Yu.V. 1 , Jonusauskas G. 2 ,<br />
Fedorova O.A. 1<br />
1<br />
A. N. Nesmeyanov Institute of Organoelement compounds of RAS, 28 Vavilova str.,<br />
Moscow, 119991, Russia, kolosova@ineos.ac.ru<br />
2<br />
Bordeaux 1University, 351 Cours de la Libération, 33405 Talence, France.<br />
The development of compounds for measuring of distribution and concentration of<br />
biologically important metal ions, e.g. zinc, displays a particular interest for sensor<br />
technology.<br />
It was shown that the presence of two coordinating sites in 2-styrylphenanthroline,<br />
which contains crown ether moiety, leads to the formation of supramolecular assembles<br />
of different structure. The binding of metal cations with different coordinating sites of<br />
the ligand resulted in different optical responses.<br />
The complex formation of the ligands with metal cations leads to changes of their<br />
fluorescent intensity. Thus, self-organization of the ligands into dimer complexes of<br />
cell-type in the presence of Zn 2+ accompanied by fluorescence quenching. The addition<br />
of cations Pb 2+ or Ca 2+ to the solution of the dimer complexes, which formed by<br />
benzocrown ether containing ligands, leads to buildup of fluorescence.<br />
The binding of metal cations with ligands in PVC-films shown the fluorescence<br />
response, which depends on cation nature. It definitely testifies about the possibility of<br />
practical usage of the PVC plasticized sensor membranes for the modification of fiberoptic<br />
sensor devices.<br />
This work was supported by financial assistance from the RFBR and the Ministry of Education and<br />
Science of the Russian Federation.
Molecular Recognition on multi-Receptor Synthetic Membranes – Towards<br />
Imprinted Vesicular Surfaces<br />
Tobias Lang a , Benjamin Gruber a , Stefan Balk a , Burkhard König a, *<br />
a<br />
University of Regensburg, Universitätsstraße 31, 93053 Regensburg<br />
e-mail: burkhard.koenig@chemie.uni-regensburg.de<br />
Non-covalent interactions of receptors and ligands at liposomal surfaces are very similar to<br />
recognition processes at biological membranes. Molecular recognition on such membranes is<br />
often governed by dynamic multivalent interactions. Based on previously reported vesicular<br />
chemosensors for the recognition of small biomolecules, [1] we currently focus on more<br />
complex liposomal systems with different artificial binding sites for the dynamic recognition<br />
of multivalent target molecules. The visualization and structuring of such multi-receptor<br />
surfaces could give access to an interesting imprinting strategy:<br />
Figure 1. Schematic drawing of an imprinting approach of a receptor embedded vesicular surface to<br />
improve the binding affinity towards a multivalent ligand.<br />
Surface-exposed binding sites could be patterned by heating the membranes above their main<br />
phase transition temperature in the presence of multivalent template molecules and<br />
subsequent cooling and removal of the templates. The Visualization of such functionalized<br />
surfaces requires special techniques and could be achieved by AFM, STM or SFG for<br />
instance.<br />
[1] B. Gruber, S. Stadlbauer, A. Späth, S. Weiss, M. Kalinina, B. König, Ang. Chem. Int. Ed. 2010,<br />
49, 7125.
SYNTHETIC TETRAAMIDES ANION RECEPTORS WITH AZULENE MOIETIES<br />
Dawid Lichosyt, a,b Paweł Dydio b , Janusz Jurczak a,b<br />
a) Institute of Organic Chemistry PAS, Kasprzaka 44/52, 01-224 Warsaw<br />
b)<br />
The Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw<br />
dlichosyt@gmail.com<br />
Anions play crucial role in many fields of chemistry, therefore research on anion<br />
receptors is very important area of supramolecular chemistry.[1] Hydrogen bonds are<br />
the most common among interactions which can be used in anion binding process. Their<br />
accessibility and directionality enables assembly of binding sites adjusted for specific<br />
anionic species.[2,3] In this communication we would like to present our studies on new<br />
ligand 1 with four donors of hydrogen bonds in macrocyclic structure. In this compound<br />
we use azulene moiety, which potentially offers optical anion sensor properties. Our<br />
research show strong affinity 1 towards anions in DMSO + 5% H2O mixture.<br />
To determine how important macrocyclic effect is we synthesized receptor 2.<br />
Furthermore, we obtained diffraction grade crystals of receptor 1 and its complexes with<br />
anions. We will discuss results of their structural analysis.<br />
[1] Sessler J. L.; Gale P. A.; Cho W. S. Anion Receptor Chemistry, The Royal Society of Chemistry,<br />
Cambridge, 2006.<br />
[2] Dydio P.; Lichosyt D.; Jurczak J. Chem. Soc. Rev., 2011,40, 2971-2985<br />
[3] Gale, P. A., Chem. Soc. Rev., 2010, 39, 3746-3771
PENDANT AZOBENZOCROWN ETHERS<br />
IN POTASSIUM SENSORS<br />
Mirosław Szarmach, Juliusz Makowski, Ewa Wagner-Wysiecka, Elżbieta Luboch<br />
Gdansk University of Technology, Faculty of Chemistry,<br />
Department of Chemical Technology, Narutowicza 11/12, 80-233 Gdansk, Poland<br />
Due to wide possible applications in different fields azobenzocrown ethers are<br />
interesting object of the studies. Structure modifications lead to compounds which may<br />
be used as ionophores in ion selective electrodes (ISE) and may also work as a<br />
chromogenic reagents for metal cation determination in solution [cf. 1-3]. Previously we<br />
have presented the synthesis and properties of hydroxybenzocrown ethers’ derivatives<br />
with ether or ether-ester side chain. Ligands were used as ionophores in ISE.<br />
16-Membered azobenzocrown ether and its derivatives are well known potassium<br />
ionophores in ISE. Here we present the ionophoric properties of newly synthesized 16membered<br />
bisazobenzocrown and azobenzocrown ethers with disulfide or thiol residue<br />
among the others. Obtained compounds were used for miniature potassium sensors<br />
construction i.e. screen printed graphite and silver electrodes (ionophores with S-H or<br />
S-S function). The influence of membrane composition, additives (carbon nanotubes)<br />
for the sensor response were studied.<br />
Obtained compounds were also tested as a material for surface plasmon sensors based<br />
on gold nanoparticles for potassium recognition in water.<br />
1. E. Luboch, E. Wagner-Wysiecka, J. F. Biernat : J. Supramol. Chem., 2, 2002, 279.<br />
2. E. Luboch., E. Wagner-Wysiecka, Z. Poleska-Muchlado, V.Ch. Kravtsov: Tetrahedron, 61, 2005,<br />
10738<br />
3. E. Luboch, E. Wagner-Wysiecka, T. Rzymowski Tetrahedron, 65, 2009,10671
Development of Vesicle-based Chemosensors: Directed Assembly<br />
of Receptors on Vesicle Surfaces<br />
Andreas Müller,<br />
Benjamin Gruber, Burkhard König*<br />
Institute of Organic Chemistry, University of Regensburg, Universitätsstraße 31,<br />
93053 Regensburg, Germany<br />
e-mail: burkhard.koenig@chemie.uni-regensburg.de<br />
For the development of highly specific vesicle-based chemosensors, a well<br />
defined two-dimensional assembly of different binding sites on the spherical vesicle<br />
surface would be necessary. Based on previous works from our group, [1] we are<br />
currently focusing on two different strategies for receptor structuring. Considering the<br />
unpolar environment in the vesicle membrane, utilizing mutual hydrogen bonding<br />
interactions of the embedded binding sites could pose the method of choice for that<br />
goal (Figure 1a). A second approach relies on imprinting techniques of receptor-<br />
modified vesicles. The required mobility of the binding sites on the vesicle surface is<br />
intended to be achieved either by interactions with membrane-embedded hydrogen<br />
bonding anchors (Figure 1b) or by reorganization of the membrane above the<br />
vesicular transition temperature (Figure 1c).<br />
Figure 1: Different approaches for receptor structuring on vesicle surfaces.<br />
Here, we present preliminary results from our investigations towards a defined<br />
receptor structuring on vesicle surfaces.<br />
[1] B. Gruber, S. Stadlbauer, A. Späth, S. Weiss, M. Kalinina, B. König, Angew. Chem. Int. Ed.<br />
2010, 49, 7125–7128.
Synthesis of monocrown-substituted p-tert-butyl(thia)calix[4]arenes<br />
A.A. Muravev, S.E. Solovieva, S.K. Latipov, I.S. Antipin, A.I. Konovalov<br />
A.E. Arbuzov Institute of Organic and Physical Chemistry KazCS RAS, Russia<br />
420088, Kazan, Arbuzov str. 8. E-mail: anton_muravyov@rambler.ru<br />
One of the extensively developing fields of organic chemistry is the design,<br />
synthesis, and study of the properties of nanosized molecular systems, which<br />
incorporate some structural blocks performing various functions, such as receptor and<br />
signal (sensor). For example, the combination of calixarenes and crown-ether fragments<br />
in one molecule gave rise to the formation of novel class of receptors, calixcrown<br />
ethers, which have an outstanding selectivity of recognition of alkali metal cations.<br />
For this reason, in this work, the synthetic route to the preparation of<br />
thiacalixmonocrown-ethers in 1,3-alternate conformation was given., which have<br />
bromo- 1, thioaceto- 2 (4), and mercapto- 3 groups. With an aim to prevent the<br />
formation of biscrown-ethers, we performed the distal substitution of two phenolic<br />
groups of calixarene by ω-haloalcohols.<br />
Currently new bromoderivatives of thiacalix[4]arene 1 and 5 have been<br />
synthesized under Mitsunobu protocol and the methods of preparation of known<br />
derivatives were improved. Bromo-substituents were substituted for thioaceto-groups<br />
and, then, mercapto-groups with high yields. Structures of compounds were elucidated<br />
by 1D and 2D NMR spectroscopy (HSQC, HMBC, COSY, NOESY), MALDI TOF<br />
MS, IR spectra, and elemental analysis.<br />
The work was supported by the Russian Foundation for Basic Research (grant<br />
no. 11-03-00985).
Catechol derivatives of thiacalix[4]arenes: new building blocks for<br />
MOF’s design.<br />
R.I. Nougmanov, S.E. Soloveva, I.S. Antipin, A.I. Konovalov<br />
A.E.Arbuzov Institute of Organic & Physical Chemistry.<br />
420088 Kazan, Arbuzov str. 8, nougmanoff@hotmail.com<br />
Thiacalixarenes represent readily available three-dimensional structures used as<br />
useful building blocks in the design of supramolecular systems. They are well known<br />
receptors to various types of guests: metal ions, organic substrates and metal complexes.<br />
Catechol derivatives are perspective for applications in medicine, analytics, catalysis,<br />
and for metal-coordination frameworks creation.<br />
1,3-alternatethiacalix[4]aren derivative Metal cation<br />
In the present work the possibility of combination two interesting class of precusors<br />
1,3-alternate thiacalix[4]arenes with omega mercapto groups and catechol derivatives<br />
for new nanoscale size macrocycles formation were established.<br />
The structure and conformation of firstly obtained compounds were characterized<br />
by the means of 1D 1 Н and 13 С NMR spectroscopy and methods of 2D NMR spectroscopy,<br />
IR spectroscopy, mass spectrometry.<br />
The work was supported by the Russian Ministry of Education and science (grant no.<br />
0384).
Synthesis and Investigations of Multiple Hydrogen Bonded<br />
Supramolecular Host - Guest Complexes<br />
Philipp Otte,<br />
Ulrich Lüning*<br />
Otto-Diels-Institut für Organische Chemie, Olshausenstraße 40, 24098 Kiel, GER.<br />
potte@oc.uni-kiel.de, luening@oc.uni-kiel.de<br />
In supramolecular chemistry, molecular recognition via non-covalent binding sites<br />
such as hydrogen bonds is common. It is necessary to have complementary hydrogen<br />
bond acceptor (A) and hydrogen donor (D) patterns. A single hydrogen bond is<br />
relatively weak, but the combination of multiple hydrogen bonds can lead to stable<br />
host - guest complexes. [1]<br />
nBu<br />
O<br />
N<br />
H<br />
O<br />
nBu<br />
N N<br />
H H<br />
N N<br />
N H N<br />
CN<br />
O<br />
N<br />
H<br />
O<br />
R<br />
nBu<br />
R = (CH 2CH 2O) 3OEt<br />
nBu<br />
N<br />
H<br />
X<br />
N N N R<br />
H<br />
H<br />
H<br />
N N N O<br />
O<br />
H3C CH 3<br />
X = O, S<br />
R = CO(CH2CH2O) 3Et<br />
(CO)CH3 H<br />
It is reasonable to synthesize molecules whose preferred conformation is the one<br />
which can form the highest number of hydrogen bonds. If an intramolecular bond has to<br />
be broken to get the needed binding pattern, a loss of energy at the expense of the<br />
complex stability would be the consequence. [2] Therefore, the aim should be to stabilize<br />
[3]<br />
the preferred conformation by using, for example, intramolecular hydrogen bonds.<br />
nBu<br />
N<br />
H<br />
X<br />
N N N R<br />
H<br />
H<br />
H<br />
X<br />
N<br />
N<br />
X = O, S nBu<br />
R = CO(CH2CH2O) 3Et<br />
N N R<br />
H<br />
Due to the orthogonality of the binding sites, highly specific dendrimeric systems<br />
could be generated.<br />
[1] J. Taubitz, U. Lüning, Eur. J. Org. Chem. 2008, 5922-5927.<br />
[2] S. Brammer, U. Lüning, C. Kühl, Eur. J. Org. Chem. 2002, 4054-4062.<br />
[3] E.W. Meijer et al. Science 1997, 278, 1601-1604.<br />
H<br />
nBu<br />
N<br />
H<br />
O<br />
H<br />
N<br />
H<br />
N<br />
CH 3<br />
N<br />
O
Victor Pavlovsky<br />
Ukraine, Odessa<br />
"Structure of Derivates of 1,4-Benzodiazepine and their Affinity for Central<br />
and Peripheral Benzodiazepine Receptors"
Chiral Concave 1,10-Phenanthrolines for Enantioselective Catalysis<br />
Lisa Reck, Ulrich Lüning*<br />
Otto-Diels-Institut für Organische Chemie, Olshausenstr. 40, 24098 Kiel, GER<br />
lreck@oc.uni-kiel.de, luening@oc.uni-kiel.de<br />
In the development of new catalysts for asymmetric synthesis, enzymes are often used<br />
as a model. The three-dimensional concave environment of the active centre is<br />
responsible for the high selectivity. Against this background, concave macrocyclic,<br />
mostly bimacrocyclic, compounds have been developed which can be compared to a<br />
“lampshade” with the concave environment as the “shade” and the active centre as the<br />
“light bulb”. [1] Structurally, these concave reagents are much less demanding than<br />
enzymes but they are also much more stable concerning different influences like pH or<br />
temperature.<br />
One group of concave reagents are the concave 1,10-phenanthrolines whose achiral<br />
variants were successfully used for diastereoselective metal catalysis. [2,3] To enable<br />
enantioselective catalysis, it is necessary to build a chiral cavity which can be realized<br />
by the use of naphthyl units.<br />
O<br />
O<br />
N<br />
X<br />
A<br />
N<br />
O<br />
O<br />
O<br />
O<br />
N N<br />
X<br />
B<br />
O<br />
O<br />
X=(CH 2) n<br />
Figure 1: Achiral concave 1,10-phenanthroline (A), axially chiral concave 1,10-phenanthroline (B).<br />
This contribution will show the synthetic procedure to obtain chiral concave 1,10phenanthrolines<br />
as well as possible separation techniques for the enantiomers which are<br />
the prerequisites for their final usage as enantioselective catalysts.<br />
1 U. H. Brinker, J.-L. Mieusset, Molecular Encapsulation, John Wiley & Sons 2010, 175-199.<br />
2 F. Löffler, M. Hagen, U. Lüning, Synlett. 1999, 1826-1828.<br />
3 M. Gelbert, U. Lüning, Supramol. Chem. 2001, 12, 435-444.
Synthesis of disubstituted by mercapto groups (thia)calix[4]arenes<br />
T.A. Rovnova, A.A. Muravev, S.K. Latipov, S.E. Solovieva, I.S. Antipin, A.I.<br />
Konovalov<br />
A.E. Arbuzov Institute of Organic and Physical Chemistry KazCS RAS, Russia<br />
420088, Kazan, Arbuzov str. 8. E-mail: leksa330@list.ru, svsol@iopc.knc.ru<br />
Thiacalix[4]arenes (TCA) are next member of calixarene family. Special interest<br />
has focused on using TCAs as suitable building blocks, multidentate preorganized<br />
macrocyclic type ligands, precursors for creation of supramolecular architectures and<br />
many other applications in nanotechnology and chemistry.<br />
(Thia)calixarenes with narrow rim mercapto-substituents are potential precursors<br />
for further modification with various functional groups and can be immobilized on a<br />
solid surface, giving rise to sensors for heavy metal ions.<br />
In this report, the synthesis of terminal disubstituted allyl- 3, 5; thioaceto-5, 6, 9;<br />
and mercapto-7 (thia)calixarenes will be discussed. Interesting behavior of TCA<br />
counterparts unsubstituted by upper rim was confirmed by MALDI TOF spectrometry<br />
and 1 H NMR spectroscopy.<br />
During the disubstitution of allyl-4 and bromoalkyl-8 thiacalix[4]arenes for<br />
thioaceto-groups, the partial dealkylation of the lower rim was observed, when there<br />
was an excess of potassium thioacetate or thioacetic acid, thus resulting in the mixture<br />
of mono- and disubstituted products. Disubstitution was observed only when<br />
stoichiometric amount of reagent was used.<br />
The work was supported by RFBR grant № 11-03-00985.
Dynamic covalent chemistry: A facile room temperature reversible Diels-<br />
Alder reaction between anthracene derivatives and N-phenyl-triazolinedione<br />
Abstract:<br />
Dr. N. Roy, Prof. J.-M. Lehn<br />
<strong>Laboratoire</strong> de Chimie Supramoléculaire, ISIS<br />
Universite´ de Strasbourg<br />
8, allée Gaspard Monge<br />
67000, Strasbourg (France)<br />
A series of readily accessible dynamic Diels-Alder reactions reversible at room temperature<br />
have been developed between anthracene derivatives as dienes and N-phenyl-1,2,4-triazoline-<br />
3,5-di-one as dienophile. The adducts formed undergo reversible component exchange<br />
forming dynamic libraries of equilibrating cycloadducts. Furthermore, reversible adduct<br />
formation allows for temperature dependent modulation of the fluorescent properties of<br />
anthracene components, a feature of potential interest for the design of opto-dynamic<br />
polymeric materials by careful selection and manipulation of these simple dienes and<br />
dienophiles.
SUPRAMOLECULAR POLYMERS OF OLIGO-DYNAMERS<br />
Gaël Schaeffer & Jean-Marie Lehn<br />
<strong>Laboratoire</strong> de Chimie Supramoléculaire, ISIS, Université de Strasbourg, France<br />
lehn@isis.u-strasbg.fr<br />
Unlike traditional ones, supramolecular polymers are macromolecular entities where<br />
monomers are held together by noncovalent interactions. The labile nature of the<br />
interactions leads to dynamic properties for this type of polymers.<br />
Similarly it is possible to use reversible covalent bonds to obtain labile interactions<br />
between monomers (molecular dynamicity). One can thus define a group of polymers of<br />
different nature (supramolecular and molecular) displaying the same dynamic feature.<br />
These polymers, named dynamers, [1]<br />
display adaptive and exchange properties due to<br />
the lability of the interactions between their monomers.<br />
In the work presented here, we show that it is possible to design double dynamers where<br />
the molecular and supramolecular dynamicity are in a non-stoichiometric ratio. This has<br />
been achieved by the:<br />
- formation of oligomers where the monomers are held together by covalent<br />
reversible interactions<br />
- functionalization of the reactive end chains of these oligomers by hydrogen bonding<br />
units<br />
- connection of these functionalized oligomers by supramolecular interactions<br />
This leads to the formation of an entity that can be seen as a supramolecular polymer of<br />
molecular oligo-dynamers. It displays two types of dynamicity that are active on a<br />
different scale. The molecular dynamicity can be used for exchange at the monomeric<br />
level, whereas the supramolecular one acts on a larger scale by exchange of oligomeric<br />
blocks.<br />
[1] J.-M. Lehn, Prog. Pol. Sci., 2005, 30, 814-831
Ekaterina Semenishyna<br />
Ukraine, Odessa<br />
"Synthesis of 5-Aryl-3-Acyloxy-7-Bromo-1,2-Dihydro-3H-1,4-Benzodiazepine-<br />
2-ones, their Pharmaceutical Properties and Affinity for Central<br />
Benzodiazepine Receptors"
Investigation of self-assembling abilities of Cu(II), Cd(II) and Ni(II)<br />
complexes with 5,15-bis(diethoxyphosphoryl)-10,20-diphenylporphyrin<br />
Sinelshchikova A.A. a , Enakieva Y.Y. a , Gorbunova Y.G. a , Nefedov S.E. b ,<br />
Bessmertnykh-Lemeune A. c , Tsivadze A.Y. a , Guilard R. c<br />
a<br />
A.N. Frumkin Institute of Physical Chemistry and Electrochemistry of RAS<br />
b<br />
N.S. Kurnakov Institute of General & Inorganic Chemistry of RAS,<br />
Leninskiy pr.31, Moscow, 119991 Russia e-mail: asinelshchikova@gmail.com<br />
c<br />
Université de Bourgogne - ICMUB UMR CNRS<br />
5260, 9 avenue Alain Savary - BP 47870, 21078 Dijon, France<br />
Earlier we have developed an efficient synthetic methodology toward meso-<br />
polyphosphoryl-substituted porphyrins and showed that self-assembling of Zn complex<br />
with 5,15-bis(diethoxyphosphoryl)-10,20-diphenylporphyrin leads toward 2D<br />
coordination polymer in the solution as well as in the solid state 1,2<br />
. Such self-assembling<br />
occurs due to formation of P=O…Zn bonds between adjacent porphyrin molecules.<br />
In the present work we studied interaction of other d-metals with 5,15-<br />
bis(diethoxyphosphoryl)-10,20-diphenylporphyrin and self-assembling properties of<br />
target compounds. Complexes of Cu(II), Cd(II) and Ni(II) were obtained by the reaction<br />
of corresponding acetate or acetylacetonate with free-base porphyrin. Complexes were<br />
characterized by UV-vis, IR,<br />
1 H, 31<br />
P NMR spectroscopy, MALDI-TOF MS analysis.<br />
Self-assembling abilities of complexes were studied by means of UV-vis, IR<br />
spectroscopy and X-ray monocrystal and powder diffraction. It was shown that<br />
cadmium and copper complexes demonstrate self-assembling in chloroform solution<br />
similar as zinc complex. In contrast nickel complex does not form supramolecular<br />
arrays in solutions. IR data confirm that in solid state self-assembling of cadmium<br />
complex occurs due to formation of coordination bonds P=O…Cd while nickel complex<br />
does not form such coordination bonds. The formation of 2D-coordination network in<br />
the case of Cu(II) and Cd(II) porphyrinates was also proved by means of X-ray<br />
diffraction analysis of mono- and polycrystalline complexes. At the same time Ni(II)<br />
porphyrinate crystalises without formation of P=O…M bonds.<br />
Acknowledgements: This work was performed in the framework of French-Russian Associated<br />
Laboratory “LAMREM” supported by ARCUS 2007 Burgundy-Russia project, Russian Foundation for<br />
Basic Research, the CNRS and Russian Academy of Sciences.<br />
REFERENCES<br />
1. Enakieva Y.Y., Bessmertnykh A.G., Gorbunova Y.G., Stern C., Rousselin Y., Tsivadze A.Y., Guilard R. Org.<br />
Lett., 2009, 11, 3842-3845.<br />
2. Kadish K.M., Chen P., Enakieva Y.Y., Nefedov S.E., Gorbunova Y.G., Tsivadze A.Y., Bessmertnykh-Lemeune<br />
A., Stern C., Guilard R. J. of Electroanalytical Chemistry, 2011, available online 08/02/2011,<br />
doi:10.1016/j.jelechem.2011.01.011.
Core-Modified Porphyrinoid: Syntheses and Characterization of<br />
Disilahexaphyrinoid<br />
Janusz Skonieczny,<br />
Lechosław Latos-Grażyński, Ludmiła Szterenberg<br />
Department of Chemistry<br />
University of Wrocław<br />
14 F. Joliot-Curie St., Wrocław 50 383, Poland<br />
e-mail: LLG@wchuwr.pl<br />
Formal replacement of two pyrrolic nitrogen atoms in the hexaphyrin ring with<br />
heteroatoms (O, S, Se) yields a class of diheterohexaphyrins. [1]<br />
In this work the<br />
modified silole has been used as building block in the synthesis of silicon-containing<br />
hexaphyrinoid.<br />
1<br />
A 2,5-bis(p-tolylhydroxymethyl)-3,4-diphenylosilole [2]<br />
reacts with pyrrole<br />
affording 16-silatripyrrane 1. Subsequent an acid catalyzed condensation of 1 and<br />
aldehyde afforded a silole-containing hexaphyrin 2 which contains two built-in silole<br />
units. This is the first example of a silole ring incorporated into the hexaphyrinoid<br />
frame.<br />
All compounds have been characterized using multinuclear NMR spectroscopy<br />
and mass spectrometry. The density functional theory (DFT) has been applied to model<br />
the molecular structure of disilahexaphyrinoid consistent with constrains imposed by<br />
NOE experiments.<br />
_____<br />
[1] R. Misra, R. Kumar, T. K. Chandrashekar, B. S. Joshi, J. Org. Chem. 2007, 72, 1153.<br />
[2] J. Skonieczny, L. Latos-Grażyński, L. Szterenberg, Chem. Eur. J. 2008, 4861.<br />
2
Conjugates of thiacalixarenes and clathrochelates - new inclusion<br />
M n+<br />
Hal<br />
Hal<br />
Clathrochelate<br />
precursor<br />
+<br />
HS<br />
HS<br />
O<br />
O<br />
S<br />
S<br />
S S<br />
O<br />
O<br />
SH<br />
SH<br />
Thiacalix[4]arene in the<br />
1,3-alternate conformation<br />
compounds<br />
S.E. Soloveva a , A.A.Tyuftin a , Y.Z.Voloshin b , M.Gruner c , W. Habicher c , I.S.Antipin a ,<br />
A.I.Konovalov a<br />
a A.E.Arbuzov Institute of Organic & Physical Chemistry, 420088, Kazan, Russia,<br />
Arbuzov str., 8. , b A.N.Nesmeyanov Institute of Organoelement Compounds RAS,<br />
119991, Moscow, Vavilova str. 28, Russia, c<br />
Technical University, Institute of Organic<br />
Chemistry, Technical Univercity, Bergstr.,66c D-01062 Dresden, Germany/<br />
E-mail: svsol@iopc.knc.ru<br />
Nanosized polytopic molecular systems are usually formed from several<br />
relatively independent building blocks, which are bounded either covalently or via weak<br />
intermolecular interactions. The most effective strategy to obtain such systems is based<br />
on the “bottom – up” principle that uses the appropriate molecular precursors.<br />
Thiacalixarene scaffolds can be regarded as the precursors of more complex nanosized<br />
systems, in particular, hybrid and polytopic molecules.<br />
M n+<br />
Tris-dioximate clathrochelates<br />
are the macrobicyclic compounds with a metal ion encapsulated in a three-dimensional<br />
macropolycyclic ligand cavity. These complexes demonstrate unique thermodynamic<br />
and kinetic stabilities and have unusual redox and photochemical properties. Here we<br />
report the synthesis and the characterization of the first hybrid calixarenoclathrochelates.<br />
Their synthesis was performed by the macrocyclization of the tetra-O-<br />
substituted thiacalix[4]arenes in 1,3-alternate conformation and monoribbedfunctionalized<br />
clathrochelate iron(II). These hybrids contain of two novel macrocyclic<br />
cavities.<br />
S<br />
S<br />
O<br />
Guest<br />
O<br />
S<br />
S<br />
S S<br />
O<br />
O<br />
Hybrid complex<br />
The support from RFBR (N 11-03-00985) is gratefully acknowledged.<br />
S<br />
S<br />
M n+
A Facile Palladium-Mediated Contractions of Benzene to<br />
Cyclopentadiene: Transformations of Palladium(II) p-Benziporphyrin<br />
Bartosz Szyszko, Lechosław Latos-Grażyński and Ludmiła Szterenberg<br />
Department od Chemistry<br />
University of Wrocław<br />
14 F. Joliot-Curie St., 50-383 Wrocław, Poland<br />
Palladium(II) p-benziporphyrin provides the unique macrocyclic vessel to afford the<br />
contraction of benzene to cyclopentadiene embedded in the first instance of 21carbaporphyrin<br />
complexes. Addition of palladium(II) and a hydroxide ion to a C–C<br />
double bond, β elimination, and competing cheletropic extrusion of carbon oxide and<br />
1,2-hydride shift reactions lead to the contraction of p-phenylene to form a<br />
cyclopentadiene unit. This reaction results in the formation of a 21-carbaporphyrin from<br />
a palladium(II) p-benziporphyrin. In the case of chloropalladium 1,4-naphthiporphyrin<br />
similar reactivity pattern allowed to obtain 21-benzocarbaporphyrin on the course of<br />
naphthalene to isoindene contraction.
Chromogenic Anion Receptors Based on s-Triazine Skeleton.<br />
Synthesis and Properties.<br />
Ewa Wagner-Wysiecka,<br />
Karolina Mazur, Kamila Muchowska<br />
Gdansk University of Technology, Faculty of Chemistry,<br />
Department of Chemical Technology, Narutowicza 11/12, 80-233 Gdansk, Poland<br />
However the design of the new anion receptors is not always easy [1], it is a growing<br />
field of research due to the key roles played by anions in biology, environment and<br />
chemistry [e.g. 2, 3]. Rapid information about anion-receptor interaction may be<br />
achieved by incorporating a chromophore residue(s) into the ligand structure. Thanks it,<br />
anion recognition is well seen with a “naked eye” and quantitative studies of<br />
complexation process are possible with the use of simple and no expensive analytical<br />
method - UV-Vis spectroscopy. Promising building block for anion sensors is 1,3,5triazine<br />
ring [4]. It can be involved in all categories of supramolecular interactions e.g.<br />
coordination bonds, hydrogen bonding, electrostatic, charge transfer and aromaticstacking<br />
interactions. Even compounds of very sophisticated structure may be easily<br />
obtained using cyanuric chloride as a substrate. Here, the synthesis of chromogenic<br />
derivatives based on 1,3,5-triazine ring is presented. Obtained compounds differ in type,<br />
size and number of substituents joined with heterocyclic residue. The distinctive feature<br />
of the introduced substituents is the presence of additional functional groups which can<br />
act as proton donors in anion recognition via hydrogen bond formation. Anion<br />
complexation studies were carried out with the use of UV-Vis and NMR spectroscopy<br />
in organic solvents and their mixtures with water. The effect of the counter ion was also<br />
taken under investigation.<br />
Acknowledgments: Author kindly acknowledged support from sources for science in years 2010-2011,<br />
Grant No. N N204 137438.<br />
[1]. F. P. Schmidtchen, Coord. Chem. Rev. 250 (2006) 2918.<br />
[2]. T. Gunnlaugsson, M. Glynn, G. M. Tocci, P.E. Kruger, F. M. Pfeffer, Coord. Chem. Rev. 250 (2006) 3094.<br />
[3]. C. Caltagirone, P. A. Gale, Chem. Soc. Rev. 38 (2009) 520.<br />
[4]. T. J. Mooibroek, P. Gamez, Inorg. Chim. Acta 360 (2007) 381.
Family Name First Name Title Position Institution Country, City<br />
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Fanlo Virgós Hugo - Ph.D.Student Stratingh Institute The Netherlands, Groningen<br />
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Fedorova Olena Dr. Assistant Professor National University - Lviv Polythechnik Ukraine, Lviv<br />
Ferlay Sylvie Maître de Conférences <strong>Laboratoire</strong> de Tectonique Moléculaire du Solide, Institut Le Bel France, Strasbourg<br />
Floquet Sébastien Dr. Assistant Professor Institut Lavoisier, University of Versailles France, Versailles<br />
Galukhin Andrey - Ph.D.Student Kazan (Volga Region) Federal University Russia, Kazan<br />
Gerasimov Alexander - Engineer Kazan (Volga Region) Federal University Russia, Kazan<br />
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Gorbunova Yulia Prof. Leading Researcher A.N. Frumkin Institute of Physical Chemistry and Electrochemistry (RAS) Russia, Moscow<br />
Gruber Benjamin - Ph.D.Student Institute of Organic Chemistry, University of Regensburg Germany, Regensburg<br />
Hesseler Britta - Ph.D.Student Christian-Albrecht-University of Kiel Germany, Kiel<br />
Hosseini Mir Wais Prof. Professor Institut Le Bel France, Strasbourg<br />
Hubscher Veronique Dr. Assistant Professor Ecole européenne d'ingénieurs en chimie (EPCM) - UDS/IPMC France, Strasbourg<br />
Isaak Elisabeth - Ph.D.Student Institute of Organic Chemistry, University of Regensburg Germany, Aachen<br />
Jianwei Li - Ph.D.Student Stratingh Institute The Netherlands, Groningen<br />
Jonkheijm Pascal Dr. Assistant Professor Institute for Nanotechnology, University of Twente The Netherlands, Enschede<br />
Kalchenko Vitaly Prof. Active Director Institute of Organic Chemistry of NAS of Ukraine Ukraine, Kyiv<br />
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Kataev Evgeny Dr. Junior Professor Tecnical University of Chemnitz, Institute for Chemistry Germany, Chemnitz<br />
Klimchuk Olga Dr. Postdoc Institut Pluridisciplinaire Hubert Curien, CNRS-IPHC/DRS, UMR 7178 Chimie Nucléaire France, Strasbourg<br />
Kolosova Olga Yu Dr. Researcher A.N. Nesmeyanov Institute of Organoelement Compounds of RAS Russia, Moscow<br />
Král Vladimir Institute of Chemical Technology, Department Analytical Chemistry Chech, Prague<br />
Krebs Ina - Ph.D.Student Organic Chemistry, University of Duisburg-Essen Germany, Essen<br />
Lang Tobias - Ph.D.Student Institute of Organic Chemistry, University of Regensburg Germany, Regensburg<br />
Latos-Grazynski Lechoslaw Prof. Department of Chemistry, University of Wroclaw Poland, Wroclaw<br />
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Family Name First Name Title Position Institution Country, City<br />
Luboch Elzbieta Prof. Gdansk University of Technology Poland, Gdansk<br />
Martynov Alexander - Senior Researcher A.N. Frumkin Institute of Physical Chemistry and Electrochemistry (RAS) Russia, Moscow<br />
Mizerev Artemiy - Ph.D.Student M.V. Lomonosov Moscow State University Russia, Moscow<br />
Müller Andreas - Ph.D.Student Institute of Organic Chemistry, University of Regensburg Germany, Regensburg<br />
Muravev Anton - Junior Researcher, PhD Student Institute of Organic and Physical Chemistry Russia, Kazan<br />
Nougmanoff Ramil - Ph.D.Student A.E.Arbuzov Institute of Organic and Physical Chemistry Russia, Kazan<br />
Novikov Volodymyr Prof. Head of Department National University - Lviv Polythechnik Ukraine, Lviv<br />
Oshchepkov Maxim Dr. Postdoc D.Meneleyev University of Chemical Technology of Russia Russia, Moscow<br />
Otte J.Philipp - Ph.D.Student Otto-Diels-Institute for Organic Chemistry, University of Kiel Germany, Kiel<br />
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Paramonov Sergey Dr. Junior Researcher A.N.Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Russia, Moscow<br />
Pavlovsky Victor Dr. Deputy Head of Department A.V.Bogatsky Physico-Chemical Institute of NAS of Ukraine Ukraine, Odessa<br />
Reck Lisa - Ph.D.Student Christian-Albrecht-University Kiel Germany, Kiel<br />
Reimers Tim - Ph.D.Student Otto-Diels-Institute for Organic Chemistry, University of Kiel Germany, Kiel<br />
Reinhoudt David Prof. Laboratory for Supramolecular Chemistry and Technology, MESA+ Institute for Nanotechnology<br />
The Netherlands, Twente<br />
U i i f T<br />
Rodik Roman Dr. Senior Researcher Institute of Organic Chemistry, National Academy of Sciences (NAS) of Ukraine Ukraine, Kyiv<br />
Rovnova Tatyana - Apprentice Researcher Institute of Organic and Physical Chemistry Russia, Kazan<br />
Roy Nabarun - Postdoc ISIS, <strong>Laboratoire</strong> de Chimie Supramoleculaire, Université de Strasbourg France, Strasbourg<br />
Schäffer Gael - Ph.D.Student ISIS, <strong>Laboratoire</strong> de Chimie Supramoleculaire, Université de Strasbourg France, Strasbourg<br />
Schatz Jürgen Prof. Department of Chemistry and Pharmacie, Institute for Organic Chemistry, Friedrich-Alexander-University Germany, Erlangen<br />
Scheer Manfred Prof. Institute for Inorganic Chemistry, University of Regensburg Germany, Regensburg<br />
Scherman Oren Dr. Department of Chemistry, University of Cambridge UK, Cambridge<br />
Schmuck Carsten Prof. Chair of Organic Chemistry Organic Chemistry, University of Duisburg-Essen Germany, Essen<br />
Semenishyna Ekaterina - Ph.D.Student A.V.Bogatsky Physico-Chemical Institute of NAS of Ukraine Ukraine, Odessa<br />
Shkrabak Alexandr - Ph.D.Student O.V. Palladin Institute of Biochemistry of National Academy of Sciences (NAS) of Ukraine Ukraine, Kyiv<br />
Sinelshchikova Anna - Researcher A.N. Frumkin Institute of Physical Chemistry and Electrochemistry (RAS) Russia, Moscow<br />
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Otto-Hahn-Straße (4)<br />
During peak hours, additional buses operate between the main railway<br />
station and the university (route 11S).<br />
On foot:<br />
From the main railway station you can reach the university on foot in about<br />
25 minutes.<br />
Address:<br />
Universität Regensburg<br />
Universitätsstraße 31, 93053 Regensburg