聚噻吩制备条件对其结构和导电性能的影响

通过改变聚噻吩合成条件(温度、浓度、反应时间)得到各种不同样品, 用FESEM, FTIR光谱, Raman光谱, XRD, UV-Vis光谱和TG等手段对样品进行研究. 结果表明, 不同的制备条件会影响噻吩环的连接方式, 直接影响聚噻吩结构的分布. 导电性能研究表明, 聚噻吩的结构差异和其导电性能直接相关, 实验证明以α-α相连接的聚噻吩有更高的电导率.

Effect of the Preparation Condition on the Structure and Conductive Properties of Polythiophene

Several different polythiophenes have been synthesized by direct oxidative polymerization of thiophene monomers under different conditions such as temperature, concentration, and time of the reaction. The chemical structure of each polymer has been characterized by FESEM, FTIR, Raman, XRD, UV-Vis, and TG respectively. The studies indicated that the connection of the thiophene ring depends on the reactive conditions, which can induce varying structure distribution of polythiophene. Experimental results suggest that some certain relations do exist between the chemical structure and material conductivity, and α-α polythiophene has a higher conductivity.