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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 kinds of organic conjugated monomers based on carbazole and thiophene were synthesized by using the STIR coupling reaction. The conductive polymers were synthesized by electrochemical method. Their structures and electrochemical properties were studied. 1H-NMR and 13C-NMR confirmed that the monomer was consistent with the theoretical structure. The infrared test confirmed that the site of electrochemical polymerization was α-thiophene. Both polymer films showed good electrochromic properties over the -0.1 V to 1.2 V voltage range. Cyclic voltammetry and thermogravimetry show that polymer P2, which has better coplanarity, has better electrochemical and thermal stability than polymer P1. The above conclusion shows that polymer P2 is a more promising material in the field of electrochemistry. The difference of monomer structure has a great influence on the properties of polymers.