MESOMORPHIC PROPERTIES OF A HOMOLOGOUS SERIES OF CHIRAL LIQUID-CRYSTALS CONTAINING THE ALPHA-CHLOROESTER GROUP

Authors
SCHACHT J DIERKING I GIESSELMANN F MOHR K ZASCHKE H KUCZYNSKI W ZUGENMAIER P
Citation
J. Schacht et al., MESOMORPHIC PROPERTIES OF A HOMOLOGOUS SERIES OF CHIRAL LIQUID-CRYSTALS CONTAINING THE ALPHA-CHLOROESTER GROUP, Liquid crystals, 19(2), 1995, pp. 151-157
Citations number
13
Categorie Soggetti
Crystallography
Journal title
Liquid crystals → ACNP
ISSN journal
02678292
Volume
19
Issue
2
Year of publication
1995
Pages
151 - 157
Database
ISI
SICI code
0267-8292(1995)19:2<151:MPOAHS>2.0.ZU;2-C
Abstract
The mesomorphic properties of the N-, S-C(*) and higher ordered smect ic phases have been investigated for a homologous series of utanoyloxy ]-4'-(4-n-alkyloxy-benzoyloxy)biphenyls. They have been characterized by optical texture observation, differential scanning calorimetry (DSC ), small angle X-ray scattering and electro-optic measurements. The co mpounds exhibit a strongly twisted cholesteric phase and smectic phase s with large spontaneous polarization and tilt angle values. One or tw o higher ordered, monotropic smectic phases were found which significa ntly differ in their rotational viscosity.