Effect of molecular structure and thermal treatment on photooptical properties of photochromic azobenzene-containing polymers films

0359467 - FZÚ 2012 RIV DE eng J - Journal Article
Bobrovsky, A. - Shibaev, V. - Bubnov, Alexej - Hamplová, Věra - Kašpar, Miroslav - Pociecha, D. - Glogarová, Milada
Effect of molecular structure and thermal treatment on photooptical properties of photochromic azobenzene-containing polymers films.
Macromolecular Chemistry and Physics. Roč. 212, č. 4 (2011), s. 342-352. ISSN 1022-1352. E-ISSN 1521-3935
R&D Projects: GA AV ČR IAA100100911; GA AV ČR(CZ) GA202/09/0047; GA MŠMT(CZ) OC10006
Grant - others:Federal Agency for Science and Innovation, Russian Federation(RU) RFASI No 02.740.11.5166
Institutional research plan: CEZ:AV0Z10100520
Keywords : calorimetry * liquid-crystalline polymers (LCP) * monomers phase behavior * polysiloxanes
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.361, year: 2011
http://onlinelibrary.wiley.com/doi/10.1002/macp.201000534/pdf

Three novel photochromic azobenzene-containing comb-shaped polyacrylates were synthesized and their phase behaviour and photooptical properties were studied. An influence of the side photochromic group structure, thermal treatment and light irradiation on aggregation azobenzene chromophores in thin spin-coated films of the polymers was investigated in detail. A special attention was paid to study the photoorientation processes in polymers films induced by polarized blue light (473 nm). The relationship between photochromic group architecture, phase behaviour, thermal treatment of films and kinetics of chromophore photoorientation was established and discussed. It was found, that position of the N=N bond in chromophores plays important role in kinetics of the process, but does not affect the maximum value of dichroism.
Permanent Link: http://hdl.handle.net/11104/0197252