导电高分子薄膜修饰电极的研究 Ⅰ.聚吡咯薄膜电极的电化学合成及行为

Studies on the Modified Electrode of Conducting Polymer Film Ⅰ.Polypyrrole Film Electrodes by Electrochemical Polymerization and Their Behaviours

聚吡咯(PPy)是发展较早的一种杂环导电高分子[1,2],有关其制备、电化学形为和表征[3-11]已有文献报道.PPy不仅具有良好的导电性和较高的稳定性,而且易于制备.

Electroactive polypyrrole(PPy)film electrodes were prepared by electrochemicalpolymerization in aqueous solutions.Various factors effecting the electropolymerizationwere studied,and voltammetric behaviour of the electroactive film electrode in differentelectrolytes was discussed.The participation of oxygen during electropolymerization ofpyrroley in aqueous solution resulted in the formation of carbonyl and hydroxyl groupsin the structure of PPy film was deduced from XPS measurement.