Thermal properties of tetraethylammonium tetrachloro-, bromotrichloro-and tribromochloroferrates(III) |
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| Authors: | D Wyrzykowski Agnieszka Pattek-Janczyk T Maniecki Katarzyna Zaremba Z Warnke |
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| Institution: | (1) PPAM-Lasers Department, INFLPR-National Institute for Laser, Plasma and Radiation Physics, Bvd. Atomistilor, Nr. 409, Magurele, Romania;(2) Faculty of Physics, University of Craiova, A.I. Cuza Str., Nr. 13, Craiova, Romania;(3) Faculty of Chemistry, University of Craiova, Calea Bucuresti Str., Nr. 107 I, Craiova, Romania;(4) Bvd. Regina Elisabeta, Nr. 4-12, University of Bucharest, Bucuresti, Romania |
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| Abstract: | A new synthesized 4CN type azomonoether, exhibiting dying properties, crystalline nature and generating interest as a material
for non-linear optical applications was investigated. Modern devices incorporating liquid crystals tend to use thin films
of such materials because of their special characteristics. Thermal stability studies are indispensable before attempting
any deposition experiment.
We have investigated the thermal behaviour of 4-(4-chlorobenzyl)oxy]-4′-cyano-azobenzene (TG, DTG, DTA and DSC) in inert
flow atmosphere, under non-isothermal conditions. The phase transitions were studied by repeated heating-cooling regimes,
with intercalated isothermal steps. The thin films were deposited on silicon and quartz substrates by matrix assisted pulsed
laser evaporation (MAPLE) using a Nd:YAG laser working at 266 nm. FTIR spectroscopy of the obtained thin films confirmed the
preservation of the compound’s structure. |
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| Keywords: | laser assisted deposition liquid crystals MAPLE phase transitions thermal analysis thin film |
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