Effect of lactate group in the chiral chain of new compounds exhibiting short-pitch cholesteric or TGBA phase

Novotná, Vladimíra; Fekete, Ladislav; Hamplová, Věra; Glogarová, Milada; Lejček, Lubor; Cigl, Martin; Pociecha, D.

doi:https://dx.doi.org/10.1080/02678292.2017.1417507

Number of the records: 1

Effect of lactate group in the chiral chain of new compounds exhibiting short-pitch cholesteric or TGBA phase

1.

SYSNO ASEP	0491127
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Effect of lactate group in the chiral chain of new compounds exhibiting short-pitch cholesteric or TGBA phase
Author(s)	Novotná, Vladimíra (FZU-D)_{RID, ORCID, SAI} Fekete, Ladislav (FZU-D)_{RID, ORCID} Hamplová, Věra (FZU-D)_{RID, ORCID, SAI} Glogarová, Milada (FZU-D)_{RID, ORCID} Lejček, Lubor (FZU-D)_{RID, ORCID} Cigl, Martin (FZU-D)_{RID, ORCID} Pociecha, D. (PL)
Number of authors	7
Source Title	Liquid Crystals. - : Taylor & Francis - ISSN 0267-8292 Roč. 45, č. 8 (2018), s. 1155-1163
Number of pages	9 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	liquid crystals ; cholesterics ; lactate derivatives
Subject RIV	JJ - Other Materials
OECD category	Materials engineering
R&D Projects	GA16-12150S GA ČR - Czech Science Foundation (CSF)
	LO1409 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	LM2015088 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	FZU-D - RVO:68378271
UT WOS	000433989500006
EID SCOPUS	85038621309
DOI	10.1080/02678292.2017.1417507
Annotation	We have synthesised and studied lactic acid derivatives based on chlorine substituted molecular core, which is created from two biphenyls linked by an ester, and terminated with one or two lactic units in a chiral chain. The compounds with one lactate group exhibit cholesteric phase with rather short helix pitch (200nm) in a broad temperature range. On contrary, compound with two lactate units reveals a stable TGBA phase, with transition temperatures substantially lower than those for one-lactate derivatives. We have studied mesophase behaviour and electro-optical properties, mostly based on the texture observation in polarising microscope. Additionally, we have used AFM and x-ray techniques to confirm mesophase identification and establish structural properties.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2019

Number of the records: 1