聚噻吩
取代基
接受者
共轭体系
化学
电子供体
电化学
电子受体
聚合物
高分子化学
分子
光化学
立体化学
导电聚合物
有机化学
物理化学
催化作用
电极
物理
凝聚态物理
作者
F. Demanze,Abderrahim Yassar,F. Garnier
出处
期刊:Macromolecules
[American Chemical Society]
日期:1996-01-01
卷期号:29 (12): 4267-4273
被引量:60
摘要
A series of bithiophenes, disubstituted with electron donor and electron acceptor groups, have been synthesized. The electronic effects exerted by these groups, on the electrochemical oxidation potential of bithiophenes, are additive, which allows us to control the overall substituent effect and make it compatible with the electropolymerization of these molecules. The electrochemical characterization of the resulting polymers has revealed unusual properties, in the case of unsymmetrical disubstitution with strong electron acceptor and donor groups. Charge confinement is observed for the first oxidated state of poly(3-cyano-3‘-methoxybithiophene), which has been interpreted by the existence of multiple potential wells, created by these push−pull substituents alternating along the conjuated polythiophene chain.
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