Analysis of the temperature dependence of the racemization of Eu(III) complexes through measurement of steady-state circularly polarized luminescence

被引：13

作者：

Belair, SD ^{[1
]}

Maupin, CL ^{[1
]}

Logue, MW ^{[1
]}

Riehl, JP ^{[1
]}

机构：

[1] Michigan Technol Univ, Dept Chem, Div Chem Sci, Houghton, MI 49931 USA

来源：

JOURNAL OF LUMINESCENCE | 2000年 / 86卷 / 01期

关键词：

europium; kinetics; racemization; chirality;

D O I：

10.1016/S0022-2313(99)00175-1

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The temperature dependence of the steady-state luminescence dissymmetry ratio, g(lum), has been measured for racemic Eu(III) complexes containing the terdentate ligands dipicolinate and phenylethynyl-dipicolinate. As the temperature is increased, the magnitude of the dissymmetry ratio for these species decreases due to racemization occurring during the excited state lifetime. The temperature dependence of g(lum) is analyzed by a non-linear curve-fitting technique to determine the activation energies for the interconversion of the enantiomers. Comparison is made with previous measurements involving time-resolved circularly polarized luminescence. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：61 / 66

页数：6