Syntheses and Properties of Polythiophene Derivatives with Phenylalkyl and Liquid Crystalline Groups

被引：13

作者：

Akagi, Kazuo ^{[1
]}

Narita, Machiko ^{[1
]}

Toyoshima, Ryoichi ^{[1
]}

Shirakawa, Hideki ^{[1
]}

机构：

[1] Univ Tsukuba, Inst Mat Sci, Tsukuba 305, Japan

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1998年 / 318卷

关键词：

mono-substituted polythiophenes; solubility; liquid crystallinity; spectroscopic properties; stereoregularity; electrical conductivity;

D O I：

10.1080/10587259808045382

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

We have synthesized a series of mono-substituted thiophene derivatives with phenylalkyl and liquid crystalline groups and polymerized them through a chemical oxidative polymerization and a dehalogenative polycondensation, respectively. Poly(phenylalkyl-substituted thiophene)s were found to have highly stereoregular configurations composed of head to tail linkages. The dehalogenative polycondensation of the 2,5-dibrominated thiophene monomer with the liquid crystalline group at the 3-position of thiophene ring showed a monotropic nematic phase with a schlieren and droplet texture in polarizing optical micrograph. All polymers were characterized m terms of chemical and spectroscopic properties as well as electrical conductivities before and after iodine doping.

引用

页码：157 / 177

页数：21

共 39 条

[1] Electrically conducting liquid crystalline polymers, mono-substituted polyacetylene derivatives [J].