Synthesis and properties of polythiophene derivatives with ferroelectric liquid crystalline substituents

被引：14

作者：

Dai, XM ^{[1
]}

Goto, H ^{[1
]}

Akagi, K ^{[1
]}

Shirakawa, H ^{[1
]}

机构：

[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan

来源：

SYNTHETIC METALS | 1999年 / 102卷 / 1-3期

关键词：

polythiophene and derivatives; liquid crystalline phase transitions; chirality; ferroelectricity;

D O I：

10.1016/S0379-6779(98)00805-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Chiroptical liquid crystalline (LC) substituent with fluorine-containing asymmetric moiety was introduced into the 3-position of thiophene ring. Polymerizations of 2,5-dibrominated thiophene monomers were carried out through dehalogenative polycondensations. The polymers showed several types of smectic phases in the heating and cooling processes. Besides, one of the polymers exhibited a striated fan-shaped texture in polarizing optical microscope. This is attributed to a formation of chiral smectic C phase, which is indispensable for ferroelectricity.

引用

页码：1291 / 1291

页数：1

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