학술논문
Anomalous phase sequence in new chiral liquid crystalline materials.
Document Type
Article
Author
Source
Subject
*LIQUID crystals
*CHIRALITY
*BROMINE
*X-ray microscopy
*LACTATES
*SPECTRUM analysis
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Language
ISSN
0267-8292
Abstract
We have prepared and studied a series of rod-like liquid crystalline compounds with the molecular core laterally substituted by bromine atom and with the lactate unit in the chiral terminal chain. Microscopic observation under the polarising microscope, x-ray and dielectric spectroscopy results enable us to establish the TGBA–SmA–TGBARE–TGBC phase sequence. The presence of the re-entrant TGBA phase below the regular SmA phase, found for three homologues, is quite uncommon. Results are discussed and compared with the previously studied compounds with regular phase sequences. [ABSTRACT FROM AUTHOR]