Letno poročilo 2005

zanemarljivo majhne hlapnosti in mo`nosti
prevajanja razli~nih ionskih zvrsti. V primeru
Grätzlovih celic predstavljajo alternativo
obi~ajnim ionskim elektrolitom z vklju~enimi
redoks I - -
/I pari. Za delo programske skupine
3
pa predstavljajo nadgradnjo redoks elektrolitov,
narejenih na osnovi organsko-anorganskih
hibridov po postopkih sol-gel kemije, in
to zato, ker zaradi njihove zanemarljive
hlapnosti odpade potreba po tesnenju
Grätzlovih celic. Ionske teko~ine za Grätzlove
celice so znane le 6 let in od takrat je bila
narejena vrsta elektrolitov, ki so potrdili, da
je raziskave v tej smeri vredno nadaljevati,
nakazali pa so tudi, da predstavlja tesnenje
celic {e vedno problem. Od tod je le korak do
uporabe ionskih teko~in, ki bi imeli kvazi trdno
ali gelsko strukturo. Problem smo re{ili tako,
da smo sintetizirali ionsko teko~ino (1-metil-
3-¢3-(trimetoksi-λ4-silil)propil¥imidazolijev jodid), ki je imela na imidazolijevem kationu
pripete trietoksi skupine, ki so omogo~ile,da
ionska teko~ina kondenzira v kvazi trdno
stanje ¢B. Orel et al., Electrochem. Commun.
7, 692 (2005); V. Jovanovski et al., J. Phys.
Chem. B 109, 14387 (2005); B. Orel et al., J.
Nanosci. Nanotehnol. (v tisku)¥.
- Protonsko prevodne membrane smo razvijali
v okviru Apollon EU projekta (vodja S.
Ho~evar). Poizkusi na membranah v gorivnih
celicah potekajo naprej, dodatne rezultate pa
bomo objavili v letu 2006 ¢U. Lavren~i~
[tangar, J. Solid State Electrochem. 9, 106
(2005)¥.
- Karbamatosilne nanokompozite smo uporabili
v obliki gelov za pripravo redoks
elektrolitov, ki omogo~ajo delovanje hibridnih
elektrokromnih sklopov ¢V. Jovanovski,
Organosilicon Chemistry, 2, 967 (2005)¥.
Prednost redoks elektroklitov je v tem, da
ustrezni elektrokromni sistemi ne potrebujejo
proti elektrod. Z vklju~evanjem ionske
teko~ine smo dosegli trajno elasti~nost
nanokompozita, do odhlapevanja reakcijskih
produktov ni pri{lo; k temu je pripomogla tudi
Laboratorij za spektroskopijo materialov
Laboratory for Spectroscopy of Materials
provements were made for the V 2 O 5 films
with the addition of organic-inorganic hybrid
to the initial sol of Vanadium isopropoxide
precursor ¢M. Liberatore, Sol. Energy
Mater. Sol. Cells 90, 434 (2006)¥. The
light vision of the interior of buildings
equipped with “smart” windows colouring
were quantified, revealing that the continuous
variation of the light impinging through
“smart” window led to the inversion of the
colour space (Fig. 1). These types of study
are not known and were published for the
first time ¢M. Klanj{ek Gunde, J. Opt. Soc.
Am. A, Opt. Image. Sci. Vis. 22, 416 (2005)¥.
- Ionic liquids attracted interest worldwide in
the last few years mainly because of their
negligible vapour pressure, low toxicity and
ability to conduct various ions, which open
their applications as electrolytes for various
electrochemical devices (batteries and DSPEC
cells). We succeeded to prepare an ionic liquid
showing self-condensation properties,
avoiding the leakage problems encountered
with the ordinary ionic liquids. The condensation
of the ionic liquid was achieved by
making 1-methyl-3-¢3-(trimethoxy-λ4-silyl) propyl¥imidazolium iodide, characterized by
the trialkoxysilane groups enabling the solgel
reactions, which led to the formation of
positively charged silsesquixane condensation
products having an open polyhedra structure
(POSS) ¢B. Orel et al., Electrochem. Commun.
7, 692 (2005); V. Jovanovski et al., J. Phys.
Chem. B 109, 14387 (2005); B. Orel et al., J.
Nanosci. Nanotehnol. (in press)¥.
- Proton conducting membranes were synthesized
and applied in low-temperature fuel
cells. This work was done in the frame of our
collaboration in EU Project Apollon (S.
Ho~evar) ¢U. Lavren~i~ [tangar, J. Solid State
Electrochem. 9, 106 (2005)¥.
- The work published in ¢V. Jovanovski,
Organosilicon Chemistry, 2, 967 (2005)¥ represents
an alternative approach towards the
preparation of electrochromic devices with a
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