HELICAL SMECTIC-A-STAR PHASE (TGBA PHASE) IN SOME TOLAN SERIES

被引：57

作者：

NGUYEN, HT

TWIEG, RJ

NABOR, MF

ISAERT, N

DESTRADE, C

机构：

[1] IBM CORP,ALMADEN RES CTR,SAN JOSE,CA 95120

[2] UNIV LILLE 1,DYNAM & STRUCT MAT MOLEC LAB,UFR PHYS,F-59655 VILLENEUVE DASCQ,FRANCE

来源：

FERROELECTRICS | 1991年 / 121卷 / 1-4期

关键词：

D O I：

10.1080/00150199108217623

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

: A helical smectic A* phase between the isotropic liquid and the ferroelectric smectic C* phase is found in three new series with very long alkoxy chains. The materials belong to the optically active series : (R) and (S) 1-methylheptyl 4’-(4“-alkoxybenzoyloxy)tolan-4-carboxylates, 4’-(4“-alkoxy-3”-fluorobenzoyloxy)tolan-4-carboxylates, 4’-(4“-alkoxy-2”, 3“-difluorobenzoyloxy)tolan-4-carboxylates. This new phase has two typical textures: filament texture when the helix pitch is large and cholesteric texture (Grandjean texture) with a short pitch. © 1991, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：187 / &

共 20 条

[11] FERROELECTRIC LIQUID-CRYSTALS .9. LATERALLY SUBSTITUTED PHENYL BENZOATES INCORPORATING A TRANS-1,4-DISUBSTITUTED CYCLOHEXANE RING [J].