新型噻吩单体的合成与电化学聚合  

Synthesis of New Thiophene Monomer and Its Electrochemical Polymerization

作　　者：苏敏[1] 陈衍夏[1] 唐李玮[1] 王圣[1] 陈胜[1] 

机构地区：[1]四川大学轻纺与食品学院,成都610065

出　　处：《材料导报》2013年第6期87-90,共4页Materials Reports

基　　金：国家自然科学基金(51003064)

摘　　要：以3,4-二溴噻吩(DBrT)为原料,通过亲核取代和醚交换反应制备了带有羟基的双烷氧基取代噻吩,再采用开环-取代反应引入磺酸官能团,得到新型取代噻吩单体EDOT-S。采用红外光谱、紫外光谱和核磁共振氢谱、碳谱对此单体进行了表征。采用循环伏安法进行电化学聚合制得PEDOT-S,该聚合物的氧化电位和还原电位分别为442mV和371mV(vs.SCE)。PEDOT-S膜具有可逆的电致变色性能,在氧化态呈蓝绿色,还原态呈紫红色。Using 3,4-dibromothiophene as raw material, disuhstituted thiophene intermediate with hydroxyl was synthesized by nucleophilic substitution and transetherification reactions. Then the novel thiophene monomer （EIX）T-S） was obtained by openloop-substitued reaction to bring in sulfonic group. Characterizations of the monomer were performed by infrared spectroscopy, UV-vis spectra and 1 H-NMR,13 C-NMR. The polymer PEIX）T-S was ob- tained by electrochemical polymerization through cyclic voltammetry. The oxidation and reduction potential of PE- DOT-S were 442 mV and 371 mV （vs. SCE） respectively. PEDOT-S film shows reversible electrochromic properties. The color of PEDOT-S film was blue-green in oxidation state and red-purple in reduction state.

关 键 词：聚噻吩材料 电致变色 磺酸基 电化学聚合 

分 类 号：TQ323[化学工程—合成树脂塑料工业]