应用化学 ›› 1988, Vol. 0 ›› Issue (4): 87-90.

• 研究简报 • 上一篇    

聚联吡啶-聚甲基丙烯酸复合物薄膜修饰电极

万国祥, 屈晓庄, 邓正华, 罗春樵   

  1. 中国科学院成都有机化学研究所
  • 收稿日期:1987-11-05 修回日期:1988-03-24 出版日期:1988-08-10 发布日期:1988-08-10
  • 基金资助:
    国家自然科学基金

MODIFIED-ELECTRODE WITH POLYION COMPLEX FILM BASED ON POLYVIOLOGEN AND POLYMETHACRYLIC ACID

Wan Guoxiang, Qu Xiaozhuang, Deng Zhenhua, Luo Chunqiao   

  1. Chengdu Institute of Organic Chemistry, Academia Sinica
  • Received:1987-11-05 Revised:1988-03-24 Published:1988-08-10 Online:1988-08-10

摘要: 联吡啶衍生物是一类具有氧化还原能力的有机物,它们在生物系统[1]、太阳电池[2]以及光解水制氢[3]等方面用作电子转移媒体.含取代基的联吡啶及其聚合物的一电子还原体(阳离子自由基)呈鲜艳的色彩,人们正研究其作为电致显色材料的可能性[5-6],为了抑制联吡啶发色基团的电化学老化,本文合成了聚二溴间二甲苯基联吡啶一聚甲基丙烯酸分子复合物(m-PXV-PMAA),并研究了这种聚离子复合物修饰电极的电化学性能.

关键词: 聚联吡啶, 聚离子复合物, 化学修饰电极, 电致显色性质

Abstract: In order to restrain the electrochemical aging of viologens, a polyionccmplex based on poly (m-xylyl viologen dibromide) (m-PXV-Br2) and polymethacrylic acid (PMAA) was synthesised.Cyclic voltammogram and potential-step tests show that the redox.active sites in the polyion complex have a very good electrochemical stability, that is, no any decrease in peak current was observed even the potential scan lasting 500 Cycles.It was also observed that the electrochemical activity of the film decreases with increase of the film thickness and is in relation with the ionic-strength of supporting electrolyte.The response speed of the film coated on a graghite electrode was 0.18 second with the thickness being 0.875μm.

Key words: Polyviologen, Polyion complex, Chemical modified electrode, Electro-ochomic prorperty