Electrically-conductive polymer and production method thereof, and solid-electrolytic capacitor
申请人:NEC CORPORATION
公开号:EP0825618A2
公开(公告)日:1998-02-25
An electrically-conductive polymer having an improved heat resistance is provided. This polymer contains an electrically-conductive polymer matrix, a multivalent proton acid, and an aromatic compound. The cleavage reaction of the main chain of the electrically-conductive polymer matrix is suppressed. As the polymer matrix, a polymer of pyrrole, thiophene, or aniline, or one of derivatives of pyrrole, thiophene, or aniline is preferably used. As the multivalent proton acid, a proton acid having two or more hydrogen atoms such as sulfuric acid, citric acid, salicylic acid, oxalic acid, and phthalic acid in each molecule is preferably used. As the aromatic compound, a sulfonic acid having at least one sulfonic group in each molecule such as p-toluensulfonic acid, p-ethylbenzenesulfonic acid, p-pentylbenzenesulfonic acid, p-octylbenzenesulfonic acid, p-decylbenzenesulfonic acid, p-dodecylbenzenesulfonic acid, 1-naphthalenesulfonic acid, 2-naphthalenesulfonic acid, and butyl naphthalenesulfonic acid is preferably used.
本文提供了一种耐热性更好的导电聚合物。这种聚合物包含导电聚合物基体、多价质子酸和芳香族化合物。导电聚合物基体主链的裂解反应受到抑制。作为聚合物基体,最好使用吡咯、噻吩或苯胺的聚合物,或吡咯、噻吩或苯胺的衍生物之一。作为多价质子酸,最好使用每个分子中含有两个或两个以上氢原子的质子酸,如硫酸、柠檬酸、水杨酸、草酸和邻苯二甲酸。作为芳香族化合物,每个分子中至少含有一个磺酸基团的磺酸,如对甲基苯磺酸、对乙基苯磺酸、对戊基苯磺酸、最好使用对辛基苯磺酸、对癸基苯磺酸、对十二烷基苯磺酸、1-萘磺酸、2-萘磺酸和丁基萘磺酸。