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Synthesis and mesomorphic properties of some ferroelectric liquid crystals of lactate
Author(s) -
Li HengFeng,
Yang YongGang,
Wen JianXun
Publication year - 2000
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20000180620
Subject(s) - chemistry , ferroelectricity , molecule , steric effects , liquid crystal , phase (matter) , crystallography , optical microscope , thermal stability , core (optical fiber) , stereochemistry , organic chemistry , condensed matter physics , optics , scanning electron microscope , physics , optoelectronics , dielectric
A semiperfluorinated chain has been introduced into three series of lactate‐based molecules, and their mesomorphic properties have been studied by DSC and optical polarized microscope. An abnormal phenomenon has been found that the introduction of a triple bond in the core of the molecule, which lengthened the molecule, gave rise to a decrease in the thermal stability of chiral smectic C phase and smectic A phase. 2, 3‐Difluoro substituents of the phenylenic structure hinder the formation of the chiral smectic C phase because of the steric effect.