New photoswitchable mesogenic polyurethanes with gelation ability

0486363 - FZÚ 2018 RIV GB eng J - Článek v odborném periodiku
Topnani, N. - Kašpar, Miroslav - Hamplová, Věra - Gorecka, E. - Pociecha, D.
New photoswitchable mesogenic polyurethanes with gelation ability.
Journal of Materials Chemistry C. Roč. 2, č. 48 (2014), s. 10357-10361. ISSN 2050-7526. E-ISSN 2050-7534
Institucionální podpora: RVO:68378271
Klíčová slova: liquid-crystalline polymers * side-chain * mesomorphic properties * B-4 phase * diols * order * gels
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 4.696, rok: 2014

We report a new series of thermotropic side-chain liquid crystalline polyurethanes comprising photosensitive three ring chiral mesogen and a flexible methylene spacer. All compounds, polymers, as well as monomeric precursors, display the smectic-type phases. Because of the presence of the azo group in molecular structure, the materials exhibit reversible photoisomerization process. It was also found that the polyurethanes show the gelation ability for several organic solvents, and the obtained gels are thermo-and photo-reversible.
Trvalý link: http://hdl.handle.net/11104/0281195