Syntheses and Properties of Polythiophene Derivatives with Phenylalkyl and Liquid Crystalline Groups
作者:
Kazou Akagi,
Machiko Narita,
Ryoichi Toyoshima,
Hideki Shirakawa,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 1998)
卷期:
Volume 318,
issue 1
页码: 157-178
ISSN:1058-725X
年代: 1998
DOI:10.1080/10587259808045382
出版商: Taylor & Francis Group
关键词: mono-substituted polythiophenes;solubility;liquid crystallinity;spectroscopic properties;stereoregularity;electrical conductivity
数据来源: Taylor
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 in terms of chemical and spectroscopic properties as well as electrical conductivities before and after iodine doping.
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