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442 mV和371 mY(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, disubstituted thiophene intermediate with hydroxyl was synthesized by nucleophilic substitution and transetherification reactions. Then the novel thiophene monomer (EDOT-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,13C-NMR The polymer PEDOT-S was obtained by electrochemical polymerization through cyclic voltammetry. The oxidation and reduction potential of PEDOT-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.
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