Laterally substituted biphenyl benzoates - synthesis and mesomorphic properties

Cigl, Martin; Hampl, F.; Svoboda, J.; Podoliak, Natalia; Stulov, Sergey; Kohout, M.; Novotná, Vladimíra

doi:https://dx.doi.org/10.1080/02678292.2020.1794069

Number of the records: 1

Laterally substituted biphenyl benzoates - synthesis and mesomorphic properties

1.

SYSNO ASEP	0541639
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Laterally substituted biphenyl benzoates - synthesis and mesomorphic properties
Author(s)	Cigl, Martin (FZU-D)_{RID, ORCID} Hampl, F. (CZ) Svoboda, J. (CZ) Podoliak, Natalia (FZU-D)_{RID, ORCID} Stulov, Sergey (FZU-D)_ORCID Kohout, M. (CZ) Novotná, Vladimíra (FZU-D)_{RID, ORCID, SAI}
Number of authors	7
Source Title	Liquid Crystals. - : Taylor & Francis - ISSN 0267-8292 Roč. 48, č. 4 (2021), s. 526-536
Number of pages	12 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	biphenyl benzoates ; lateral substitution ; nematics ; smectic phases
Subject RIV	CC - Organic Chemistry
OECD category	Organic chemistry
R&D Projects	EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	GA18-14497S GA ČR - Czech Science Foundation (CSF)
Method of publishing	Limited access
Institutional support	FZU-D - RVO:68378271
UT WOS	000550969600001
EID SCOPUS	85088471929
DOI	10.1080/02678292.2020.1794069
Annotation	We have synthesised several series of dialkoxy-terminated biphenyl benzoates with lateral substituents (F, Cl) in the vicinity of the ester linking group, varying the length of the terminal alkyl chains. The aim was to study mesomorphic properties of these new compounds and compare them with the previously reported analogous phenyl biphenylcarboxylates, which possess reverse orientation of the ester linking group. The studied compounds were characterised by differential scanning calorimetry, polarising optical microscopy and birefringence measurements. For selected homologues, the type of mesophases was confirmed by x-ray scattering analysis. We calculated the dipole moments and suggested its correlation with the preference of tilted smectic phases in studied biphenyl benzoates. Generally, lateral substitution causes the drop of phase transition temperatures as well as melting points, giving rise to mesophases in a wide temperature range, in several cases down to the room temperature.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2022
Electronic address	https://doi.org/10.1080/02678292.2020.1794069

Number of the records: 1