ELECTROGENERATED CHEMI-LUMINESCENCE .35. TEMPERATURE-DEPENDENCE OF THE ECL EFFICIENCY OF RU(BPY)3 2+ IN ACETONITRILE AND EVIDENCE FOR VERY HIGH EXCITED-STATE YIELDS FROM ELECTRON-TRANSFER REACTIONS

被引：225

作者：

WALLACE, WL ^{[1
]}

BARD, AJ ^{[1
]}

机构：

[1] UNIV TEXAS,DEPT CHEM,AUSTIN,TX 78712

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1979年 / 83卷 / 10期

关键词：

D O I：

10.1021/j100473a022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The temperature dependence of the ECL emission yield, φECL, of Ru(bpy)32+ in acetonitrile has been determined and was found to correlate closely with the luminescence quantum yield, φe, of the lowest Ru(bpy)32+ dπ* metal-to-ligand charge transfer (MLCT) excited state. Evidence is presented that at low temperatures (< 30 °C) the ECL emission yield becomes equal to the luminescence quantum yield implying an efficiency for excited state formation in the electron transfer reaction of Ru(bpy)33+ with Ru(bpy)3+ of near 100%. High efficiencies for excited state formation are rationalized on the basis of the excited state spectroscopic properties of Ru(bpy)32+ and the resulting implications to electron transfer theory and the ECL mechanism are discussed. © 1979 American Chemical Society.

引用

页码：1350 / 1357

页数：8

共 63 条

[1] INORGANIC PHOTOPHYSICS IN SOLUTION .1. TEMPERATURE ACTIVATION OF DECAY PROCESSES IN LUMINESCENCE OF TRIS(2,2'-BIPYRIDINE)RUTHENIUM(II) AND TRIS(1,10-PHENANTHROLINE)RUTHENIUM(II)IONS [J].