应用化学 ›› 1991, Vol. 0 ›› Issue (3): 80-82.

• 研究简报 • 上一篇    下一篇

二茂铁衍生物L-B膜修饰SnO2电极的性能

林原, 肖绪瑞   

  1. 中国科学院感光化学研究所, 北京 100101
  • 收稿日期:1990-02-19 修回日期:1990-08-21 出版日期:1991-06-10 发布日期:1991-06-10
  • 基金资助:
    国家自然科学基金

ELECTROCHEMICAL BEHAVIOUR OF FERROCENE L-B FILM MODIFIED SnO2 ELECTRODE

Lin Yuan, Xiao Xurui   

  1. Institute of Photographic Chemistrg, Academia Sinica, Beijing 100101
  • Received:1990-02-19 Revised:1990-08-21 Published:1991-06-10 Online:1991-06-10

摘要: 用外层单电子快速转移的氧化还原剂二茂铁及其衍生物修饰电极,在电极/溶液界面作为电子传递的中介物,可使电极上进行的慢反应得到加速、起中介催化作用[1]。目前研究较多的是共价键合和高分子膜的修饰[2],其他方式的修饰报道不多。用能实现分子有序化排列的L-B膜技术进行氧化还原电活性分子的修饰电极还未见报道。我们用L-B膜技术在SnO2电极上修饰了二茂铁的衍生物-硬脂酸二茂铁酯(FcOCOC17H35)双亲化合物,曾研究了修饰膜的电化学可逆行为和稳定性[3]

关键词: LB膜, 化学修饰电极, 二茂铁衍生物

Abstract: The electrochemical behaviour of SnO2 electrode modified with L-B films of ferrocenederivative (FcOCOC17H35) has been studied in Fe(CN)63-/4- solution.By measuring theelectrochemical kinetic parameters i.e.rate constant of electrode reaction Ks, the chargetransfer mediation of modified molecules at SnO2/Fe(CN)63-/4- interface was analyzed.Decrease in Ks for SnO2 electrode modified with mono- or multi-layers of ferrocenederivative L-B film indicated that faster electron transfer is expected only in such amodified molecule which can act as a fast charge transfer mediator at SnO2/Fe (CN)63-/4- interface.

Key words: L-B film, chemical modified electrode, ferrocene derivative