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Electrochemical Synthesis and Research of Two Polymers Composed of Alternate Carbazole and Thiophene Units
Qing Cheng,Qing-zhen Wen*
Author NameAffiliationE-mail
Qing Cheng College of Science, Naval University of Engineering, Wuhan 430033, china  
Qing-zhen Wen* College of Science, Naval University of Engineering, Wuhan 430033, china allencheng987@163.com 
Abstract:
Two organic conjugated molecules composed of central carbazole and bithiophene groups were prepared via the Stille coupling reaction, conductive polymers were prepared by elec-trochemical method. Structure and photoelectric research of polymers were investigated. 1H NMR and 13C NMR of molecules were consistent with the theorical results, FT-IR showed electrochemical polymeric site were α-position of thiophene units. The smooth morphology and distributed holes were beneficial to improve the electrical conductivity by SEM. When applied voltage was from -0.1 V to 1.2 V, both of the polymer films P1 and P2 showed good electrochromic performances. Compared with P1, P2 had better electrochemical stability and thermal stability due to the better coplanarity by repeated cyclic voltammograms and TGA. The P2 was a promising material in the electrochemical field, meanwhile, it showed that the monomer structure had greatly impact on the performance of polymer.
Key words:  Stille reaction, Cyclic voltammetry, Electrochemistry polymerization, Spec-troelectrochemistry
FundProject:
基于咔唑和噻吩的两种聚合物的电化学合成
程清,文庆珍*
摘要:
利用斯蒂尔偶联反应合成了两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光电性能研究. 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. 光滑、均质且分布小孔的表面形貌有利于提高聚合物的电导率和电子传输性能. 在-0.1 V到1.2 V电压范围内,两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.
关键词:  斯蒂尔反应,循环伏安法,电化学聚合,光谱电化学
DOI:10.1063/1674-0068/28/cjcp1503050
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