Mesogens with four-benzene molecular core and two lactate units in the chiral chain

0551082 - FZÚ 2022 RIV GB eng J - Journal Article
Novotná, Vladimíra - Stulov, Sergey - Pociecha, D. - Hamplová, Věra - Fekete, Ladislav - Cigl, Martin
Mesogens with four-benzene molecular core and two lactate units in the chiral chain.
Liquid Crystals. Roč. 48, č. 15 (2021), s. 2097-2105. ISSN 0267-8292. E-ISSN 1366-5855
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA MŠMT LTC19051; GA MŠMT(CZ) LO1409; GA MŠMT(CZ) LM2015088
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : liquid crystals * lactic acid derivatives * smectics
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 2.676, year: 2021
Method of publishing: Limited access
https://doi.org/10.1080/02678292.2021.1929528

We prepared and studied new series of mesogens with a molecular core based on two biphenyls connected via ester linkage, with the biphenyl in central part laterally substituted by a chlorine atom. The studied compounds have two lactate groups and methylbutyl in the chiral chain and they exhibit the SmA phase in a very broad temperature range. We pursued the mesomorphic property and confirmed the phase identification by x-ray measurements. We performed ab-initio calculations and found that the dipole moment is oriented along the long molecular axis, so its small transversal component probably causes the stability of the SmA phase and lack of ferroelectricity or antiferroelectricity.
Permanent Link: http://hdl.handle.net/11104/0327445