Induced frustrated twist grain boundary liquid crystalline phases in binary mixtures of achiral hockey stick-shaped and chiral rod-like materials

0509390 - FZÚ 2020 RIV GB eng J - Článek v odborném periodiku
Chakraborty, S. - Das, M.K. - Bubnov, Alexej - Weissflog, W. - Weglowska, D. - Dabrowski, R.
Induced frustrated twist grain boundary liquid crystalline phases in binary mixtures of achiral hockey stick-shaped and chiral rod-like materials.
Journal of Materials Chemistry C. Roč. 7, č. 34 (2019), s. 10530-10543. ISSN 2050-7526. E-ISSN 2050-7534
Grant CEP: GA MŠMT(CZ) EF16_019/0000760; GA ČR GA19-03564S
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: liquid crystal * ferroelectric phase * mesomorphic behaviour * binary mixture * spontaneous polarisation * twist grain boundary phase
Obor OECD: Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics
Impakt faktor: 7.059, rok: 2019
Způsob publikování: Omezený přístup
https://doi.org/10.1039/c9tc02917f

For a newly designed binary liquid crystalline system we report the induction of two stable twist grain boundary (TGB) phases, namely the orthogonal paraelectric TGB smectic A* (TGBA*) and tilted ferroelectric TGB smectic C* (TGBC*) phases, within a quite broad temperature range. The designed binary mixtures consist of a highly tilted chiral ferroelectric compound, (S)(+)-4'- (w-alkanoyloxy) alkoxybiphenyl-4-yl 4-(1-methylheptyloxy) benzoates (2H6R) and an achiral hockey stick-shaped compound (H-22.5). Possible outcomes and related transitional phenomena have been discussed from the viewpoint of perturbation introduced by the achiral hockey stick-shaped molecules.

Trvalý link: http://hdl.handle.net/11104/0300153