季阳离子基团对聚吡咯膜伏安特性的影响  

Influence of Quaternary Cations on the Voltammetric Properties of PPy Films

作　　者：姜春明[1] 张汉昌[1] 白如科[1] 李小波[1] 

机构地区：[1]中国科学技术大学化学与材料科学学院,安徽合肥230026

出　　处：《功能高分子学报》2003年第3期357-361,共5页Journal of Functional Polymers

摘　　要：　在含有相同阴离子与不同阳离子基团的电解质溶液中用电位阶跃技术制备了聚吡咯(PPy)膜,用循环伏安法于空白溶液中研究了膜的电化学行为。研究结果表明随着阳离子基团增大,制膜时消耗的电量减小,膜的氧化还原电流下降,阴极和阳极峰电位分别向更负和更正的方向移动。扫描电镜显示阳离子基团对PPy膜的沉积过程和形态结构产生了一定的影响。PPy films are prepared in the electrolytes solution by using potential step technique. In the solution, there are some electrolytes containing the same anions and different cations. The oxidationreduction behavior of the PPy films is investigated in the bank solution with cyclic voltammogram. The experiment results show that with the increasing of the size of the cations, the charge passed during the polymerization process diminished, the valves of the peak currents reduced, the oxidation potential moved positively and the reduction potential negatively. SEM images display some influences of cations on the polymerization process and the morphology of the PPy films.

关 键 词：季阳离子基团 聚吡咯膜 伏安特性 电化学 氧化还原 膜性质 

分 类 号：O633.5[理学—高分子化学] TB383[理学—化学]