Acta Chimica Sinica ›› 2002, Vol. 60 ›› Issue (9): 1662-1667. Previous Articles     Next Articles

Original Articles

取代基对胺化合物联吡啶钌电致化学光影响的研究

陈曦;易长青;李梅金;李真;王小如   

  1. 厦门大学化学化工学院,厦门(361005)
  • 出版日期:2002-09-15 发布日期:2002-09-15

Effect of Substituents of Amines on Electrochemiluminescence of Tri (2,2'-bipyridine)ruthenium with Some Amines

Chen Xi;Yi Changqing;Li Meijin;Li Zhen;Wang Xiaoru   

  1. The Key Laboratory of Analytical Sciences of Ministry of Education and Department of Chemistry, Xiamen University,Xiamen(361005)
  • Online:2002-09-15 Published:2002-09-15

Electrochemiluminescences (ECLs) based on tris(2,2'-bipyridine) ruthenium (II) [Ru(bpy)_3~(2+)] and some alkaloids or amines such as sophoridine, matrine, methamphetamine and amphatamine in phosphate buffer solution (pH 9.0) are studied. The light emission is mainly caused by the electro-oxidation reaction between amino group on the alkaloid compounds and Ru(bpy)_3~(2+) in a thin layer flow cell equipped with a glassy carbon disc electrode (22.1 mm~2) at about the potential of +1.30 V (vs. Ag/AgCl). The luminescence wavelength of 610 nm confirms that ECL is caused by Ru(bpy)_3~(2+*) back to its ground state. The effects of the nature and three-dimensional conformation of the substituents of these alkaloids on the ECL intensities are discussed. Ionization potentials and angle of C-N-C bond taken from calculation data further confirm the experimental results.

Key words: ELECTROLUMINESCENCE, CHEMILUMINESCENCE REACTION, BIPYRIDINE P, RUTHENIUM COMPOUNDS, ALKALOID

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