Structural optimisation of lactic acid derivatives to obtain enhanced ferroelectric properties in smectic phases

0571853 - FZÚ 2024 RIV GB eng J - Journal Article
Podoliak, Natalia - Novotná, Vladimíra - Hamplová, Věra - Pociecha, D. - Cigl, Martin
Structural optimisation of lactic acid derivatives to obtain enhanced ferroelectric properties in smectic phases.
Liquid Crystals. Roč. 50, č. 1 (2023), s. 149-156. ISSN 0267-8292. E-ISSN 1366-5855
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA ČR(CZ) GA22-16499S
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : smectogens * lactate derivatives * anti-ferroelectricity * ferroelectrics
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 2.2, year: 2022
Method of publishing: Limited access
http://doi.org/10.1080/02678292.2022.2131917

Ferroelectricity is a desirable property of liquid crystalline materials. To enhance the ferroelectric properties, we optimised the molecular structure of the previously synthesised compounds DLm/n and prepared a series of (S)-lactate mesogens denoted ZL, which differ in a linkage of the non-chiral chain by an additional ether group. By this modification, we have succeeded in broadening the temperature range of a ferroelectric SmC* phase and spreading it down to room temperature, as well as in decreasing the melting points in comparison with the previously studied compounds. Also, the spontaneous electric polarisation of ZL compounds was found to be higher than that of parent mesogens.
Permanent Link: https://hdl.handle.net/11104/0342763