The effect of spacer and alkyl tail lengths on the photoorientation processes in amorphousized films of azobenzene-containing liquid crystalline polymethacrylates

0531911 - FZÚ 2021 RIV GB eng J - Journal Article
Bobrovsky, A. - Shibaev, V. - Cigl, Martin - Hamplová, Věra - Dorovatovskii, P. - Ostrovskii, B. - Bubnov, Alexej
The effect of spacer and alkyl tail lengths on the photoorientation processes in amorphousized films of azobenzene-containing liquid crystalline polymethacrylates.
Liquid Crystals. Roč. 47, č. 3 (2020), s. 377-383. ISSN 0267-8292. E-ISSN 1366-5855
R&D Projects: GA ČR GA19-03564S; GA MŠMT LTC19051
Institutional support: RVO:68378271
Keywords : liquid crystals * reactive methacrylate mesogens * side-chain polymers * polymethacrylate
OECD category: Materials engineering
Impact factor: 2.908, year: 2019
Method of publishing: Limited access
https://doi.org/10.1080/02678292.2019.1655171

In our days, photochromic polymers possessing the liquid crystalline behaviour attract considerable attention of the scientific community due to their functionality and highlighted effects which can be used for opto-electronics and photonics. Photoorientation processes under the action of the polarized UV (355 nm) and visible (457 nm) light are studied for the amorphousized films of new azobenzene-containing polymethacrylates with different lengths of alkyl spacers and tails (5, 6 and 10 methylene units). The prominent effects of the chemical structure, namely length of the alkyl spacers and tails, as well as wavelength of the excitation light, on the peculiarities of the photoorientation process are demonstrated. Those effects can lead to quite important conclusions concerning possible influence of the microphase separation in polymer films.

Permanent Link: http://hdl.handle.net/11104/0310541