Helix parameters in bi- and multicomponent mixtures composed of orthoconic antiferroelectric liquid crystals with three ring molecular core

被引：39

作者：

Czerwinski, M. ^{[1
]}

Tykarska, M. ^{[1
]}

机构：

[1] Mil Univ Technol, Inst Chem, PL-00908 Warsaw, Poland

来源：

LIQUID CRYSTALS | 2014年 / 41卷 / 06期

关键词：

liquid crystals; antiferroelectric phase; helix twist inversion; helical pitch; optical microscopy; TWIST SENSE; PITCH; TEMPERATURE; TILT;

D O I：

10.1080/02678292.2014.884248

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Eight types of bicomponent systems composed of antiferroelectric compounds with different polarity of achiral chain and different temperature dependence of helical pitch as well as three multicomponent mixtures composed of antiferroelectric compounds with opposite helical twist sense were studied. The phase miscibility was tested by polarising optical microscopy. The results of the helical pitch and helical twist sense measurements obtained by a spectrophotometric method of selectively reflected light and by polarimetric method, respectively, are presented. It was found that it is possible to control helical pitch length and temperature of helix twist inversion in antiferroelectric mixtures by controlling the ratio of compounds with left- and right-handed helix in such mixtures, although all of them have the same chiral terminal chain.

引用

页码：850 / 860

页数：11

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