过氧化聚吡咯膜修饰微电极的制备及其电化学特性  

Preparation of Overoxidized Polypyrrole Film Modified Microelectrode and Its Electrochemical Properties

作　　者：万其进[1] 张学记[2] 张春光[2] 周性尧[2] 

机构地区：[1]湖北师范学院化学系,黄石435002 [2]武汉大学化学系,武汉430072

出　　处：《分析化学》1997年第9期1031-1033,共3页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金;!省教委科研基金资助项目。

摘　　要：用电聚合法在铂微盘电极上制备了聚吡咯（ＰＰｙ）膜，并将其在电解质水溶液中进行过氧化处理。所得到的过氧化膜是非电子导体而为离子导体，膜具有多孔性的特征。该膜具有排拆阴离子的作用，而对大阳离子如多巴胺具有高度的选择性。同时讨论了该膜对多巴胺选择响应的影响因素。Polypyrrole (PPy) film was electropolymerized on platinum disk microelectrode and treated by overoxidation in aqueous electrolyte solution. The film produced is electroni- cally non-conductive but ionically conductive and possesses porosity. This film has highly cation-selective properties such as for dopamine and can reject many interferences of aaions. The influencing factors of the film on the selective response of dopamine were also discussed..

关 键 词：微电极 过氧化 聚吡咯膜 化学修饰电极 多巴胺 

分 类 号：O657.1[理学—分析化学] Q58[理学—化学]