Synthesis and Properties of Polythiophene Containing Mesogenic Group at 3-Position of Thiophene Ring
作者:
Naoyuki Koide,
Hirofumi Iida,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 1995)
卷期:
Volume 261,
issue 1
页码: 427-436
ISSN:1058-725X
年代: 1995
DOI:10.1080/10587259508033487
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Various kinds of polythiophene derivatives were synthesized and thermal properties were examined by DSC, polarized microscopic and X-ray diffraction observations. Fusibility and solubility of these polymers deeply depends upon the polymerization methods and polarity of the mesogenic group. Polymerization was carried out by oxidation and polycondensation methods. The polarity at the end of mesogenic group plays an important role for solubility and fusibility of the polymer in the case of oxidative polymerization. 3-Substituted polythiophene having polar group such as cyano or nitro at the end of mesogenic group was soluble in polar solvent and fusibility at higher temperature. The polymer having polar group at the end of mesogenic group prepared by mild polymerization condition such as polycondensation exhibited a clear smectic texture and also showed electrochemically active by cyclic voltamograms.
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