NOVEL POLYTHIOPHENE, AND COMPOSITION CONTAINING THE POLYTHIOPHENE AND ORGANIC SOLVENT

To provide a novel polythiophene that can be dissolved or dispersed in organic solvent, and has high conductivity.SOLUTION: The present invention provides a polythiophene containing a structural unit represented by formula (1), where Ris a C1-6 alkyl group or a halogen atom. Mis a conjugated acid of an amine compound represented by [NH(R)(R)]or a quaternary ammonium cation represented by [N(R)(R)]. Ris a C7-20 alkyl group, optionally substituted. Ris H, or a C1-20 alkyl group, optionally substituted. m is an integer of 1-6.SELECTED DRAWING: None 【課題】有機溶媒に溶解又は分散可能で、高導電性を有する新規ポリチオフェンの提供。【解決手段】式（１）で表される構造単位を含むポリチオフェン。式中、Ｒ１は、Ｃ数１〜６のアルキル基又はハロゲン原子。Ｍ１は、［ＮＨ（Ｒ２）（Ｒ３）２］＋で表されるアミン化合物の共役酸又は［Ｎ（Ｒ２）（Ｒ３）３］＋で表される第４級アンモニウムカチオン。Ｒ２は、置換基を有してもよい総炭素数７〜２０のアルキル基。Ｒ３は、Ｈ、置換基を有してもよい総Ｃ数１〜２０のアルキル基。ｍは１〜６の整数。【選択図】なし