NOVEL SEQUENCE WITH INCOMMENSURATE SA PHASES IN A NEW DIMESOGENIC LIQUID-CRYSTAL

被引：108

作者：

HARDOUIN, F ^{[1
]}

ACHARD, MF ^{[1
]}

JIN, JL ^{[1
]}

SHIN, JW ^{[1
]}

YUN, YK ^{[1
]}

机构：

[1] KOREA UNIV,COLL SCI,DEPT CHEM,SEOUL 136701,SOUTH KOREA

来源：

JOURNAL DE PHYSIQUE II | 1994年 / 4卷 / 04期

关键词：

D O I：

10.1051/jp2:1994152

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

We present differential scanning calorimetry, optical and X-ray diffraction measurements for a new dimesogenic liquid crystal compound (KI5). The rich polymorphism of this compound includes new smectic phases and rare phase transitions. In particular the first observation in a pure compound of two incommensurate SA phases as well as cholesteric and helical smectic phases (TGB and SC* phases) are reported. We discuss this observation in terms of the dual peculiar structural character of the molecule : a polyphilic and dimesogenic system including the concept of the central flexible spacer.

引用

页码：627 / 643

页数：17

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