International Summer School PROGRAM - Laboratoire d'Infochimie ...

Novel fluorescent sensors based on crown ether containing derivatives
of 2-styrylphenanthroline
Kolosova O.Yu. 1 , Gulakova E.N. 1 , Shepel’ N.E. 1 , Fedorov Yu.V. 1 , Jonusauskas G. 2 ,
Fedorova O.A. 1
1
A. N. Nesmeyanov Institute of Organoelement compounds of RAS, 28 Vavilova str.,
Moscow, 119991, Russia, kolosova@ineos.ac.ru
2
Bordeaux 1University, 351 Cours de la Libération, 33405 Talence, France.
The development of compounds for measuring of distribution and concentration of
biologically important metal ions, e.g. zinc, displays a particular interest for sensor
technology.
It was shown that the presence of two coordinating sites in 2-styrylphenanthroline,
which contains crown ether moiety, leads to the formation of supramolecular assembles
of different structure. The binding of metal cations with different coordinating sites of
the ligand resulted in different optical responses.
The complex formation of the ligands with metal cations leads to changes of their
fluorescent intensity. Thus, self-organization of the ligands into dimer complexes of
cell-type in the presence of Zn 2+ accompanied by fluorescence quenching. The addition
of cations Pb 2+ or Ca 2+ to the solution of the dimer complexes, which formed by
benzocrown ether containing ligands, leads to buildup of fluorescence.
The binding of metal cations with ligands in PVC-films shown the fluorescence
response, which depends on cation nature. It definitely testifies about the possibility of
practical usage of the PVC plasticized sensor membranes for the modification of fiberoptic
sensor devices.
This work was supported by financial assistance from the RFBR and the Ministry of Education and
Science of the Russian Federation.