Deactivation and luminescence lifetimes of excited uranyl ion and its fluoro complexes

被引：16

作者：

Fazekas, Z

Yamamura, T

Tomiyasu, H

机构：

[1] Tokyo Inst Technol, Nucl Reactors Res Lab, Meguro Ku, Tokyo 1528550, Japan

[2] Tohoku Univ, Inst Mat Res, Ibaraki 1528550, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1998年 / 271卷

关键词：

uranyl; uranyl fluoro complexes; luminescence; lifetime; deactivation;

D O I：

10.1016/S0925-8388(98)00201-1

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 luminescence decay of uranyl fluoride complexes has been studied in broad fluoride concentration range. Biexponential decay were found with a shorter lifetime component varying between 1.7 and 19.1 mu s, while a longer component is in the range from 49 to 156 mu s The fluoride saturated solution exhibits single exponential decay with a lifetime of 207 mu s. The activation parameters for the decay of [UO2F](+) complex have been determined. The results have been compared to other studies and interpreted in terms of ligand exchange, which is proposed as a new deactivation pathway for excited uranyl fluoro complexes. (C) 1998 Elsevier Science S.A.

引用

页码：756 / 759

页数：4

共 10 条

[1] THERMODYNAMICS OF METAL COMPLEX FORMATION IN AQUEOUS-SOLUTION .1. POTENTIOMETRIC STUDY OF FLUORIDE COMPLEXES OF HYDROGEN, URANIUM(VI), AND VANADIUM(IV) [J].