中文摘要：

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EIN）TS。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PEIX）T-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。

英文摘要：

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.