Acta Chimica Sinica ›› 2002, Vol. 60 ›› Issue (2): 281-286. Previous Articles     Next Articles

Original Articles

Ru(bpy)^2^+~3-C2O^2^-~4-PtE体系的两条电致化学发光通道

李凤;林祥钦;崔华   

  1. 中国科学技术大学化学系.合肥(230026)
  • 出版日期:2002-02-15 发布日期:2002-02-15

Two electrochemiluminescence pathways of Ru(bpy)^2^+~3/C2O^2^-~4 system on platinum electrode

Li Feng;Lin Xiangqin;Cui Hua   

  1. Univ Sci & Technol China, Dept Chem.Hefei(230026)
  • Online:2002-02-15 Published:2002-02-15

Two anodic electrochemiluminescence (ECL) pathways were resolved at Ru(bpy)^2^+~3/C2O^2^-~4 system on Pt electrodes, correspondign to two anodic potential resolved ECL peaks observed at 1.22V (vs. SCE) (peak 1) and 1.40V (peak 2), respectively. The location and intensity of these peaks were characterized by the different method of pretreatment of the Pt electrode, including polishing, pre- deoxidizing, pre-oxidizing sulfur modification, as well as the effect of C2O^2^-~4 concentration, medium pH, dissolved O2 and dissolved CO2. The mechanism of ECL peak 2 was proposed as the catalytic luminescence of CO^-^.~2 (or C2O^-^.~4) generated from direct electrode-oxidation of C2O^2^-~4.

Key words: ELECTROLUMINESCENCE, PLATIMUM ELECTRODE, CHEMILUMINESSENCE, RUTHENIUM COMPLEX, BIPYRIDINE P, OXALATO COMPLEX, CYCLOVOLTAMGRAPH

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