基于咔唑和噻吩的2种聚合物的电化学性能  

Electrochemical Performance of Two Polymers Composed of Alternate Carbazole and Thiophene Units

作　　者：程清[1] 文庆珍[1] 朱金华[1] 李红霞[1] 

机构地区：[1]海军工程大学理学院,湖北武汉430033

出　　处：《高分子材料科学与工程》2016年第3期1-6,共6页Polymer Materials Science & Engineering

基　　金：海军工程大学理学院基金(HJGSK2014G127)

摘　　要：利用斯蒂尔偶联反应合成了2种基于咔唑和噻吩的有机共轭单体,通过电化学方法聚合成导电聚合物,并对其进行了结构表征和电化学性能研究。核磁共振1H谱和13C谱验证了单体与理论结构一致,红外测试验证了电化学聚合位点为噻吩的α位。在-0.1 V到1.2 V电压范围内,2种聚合物膜都表现出良好的电致变色特性。循环伏安法和热重表明,相比于聚合物P1,共平面性更好的聚合物P2的电化学和热稳定性更优。以上结论表明聚合物P2在电化学领域是一种更有前景的材料,单体结构差异对聚合物性能有很大影响。Two organic conjugated molecules composed of central carbazole and thiophene units were prepared via the Stille coupling reaction, conductive polymers were prepared by electrochemical method, and the structure and photoelectric property of polymers were investigated. IH-NMR and I3C-NMR results of monomers are consistent with the theory. FT-IR shows that the electrochemical polymeric site is a-position of thiophene units. When the applied voltage is from -0.1 V to 1.2 V, both of the polymer films show good electrochromic performances. Compared with Pl, P2 has better electrochemical stability and thermal stability due to the better coplanarity confirmed by repeated cyclic voltarnmograms and TGA. The above conclusion proves that the P2 is a more promising material in electrochemical field, meanwhile, the monomer structure has greatly impact on performance of polymer.

关 键 词：斯蒂尔反应 循环伏安法 电化学聚合 噻吩 

分 类 号：TQ316.33[化学工程—高聚物工业]