Energy transfer between UO22+ and Eu3+ in sol-gel glasses: A spectroscopic investigation

被引：15

作者：

Dai, S

Xu, W

Metcalf, DH

Toth, LM

机构：

[1] Chemical Technology Division, Oak Ridge National Laboratory, Oak Ridge

来源：

CHEMICAL PHYSICS LETTERS | 1996年 / 262卷 / 3-4期

关键词：

D O I：

10.1016/0009-2614(96)01088-3

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：

Silica glasses doped with uranyl ions (UO22+) and europium ions (Eu3+) via sol-gel processes have been prepared so that the quenching of the UO22+ emission by Eu3+ in the sol-gel glass could be investigated. The quenching efficiency is found to be much less than that in aqueous solutions. This difference between the quenching efficiencies in the solid sol-gel glass and the liquid solutions can be attributed to that of the mobility of Eu3+ and UO22+ in two systems. A static energy-transfer process is proposed as the dominant mechanism for the quenching of UO22+ emission by Eu3+ in the sol-gel glass.

引用

页码：315 / 320

页数：6

共 28 条

[1] Luminescence quenching in supramolecular systems: A comparison of DNA- and SDS micelle-mediated photoinduced electron transfer between metal complexes [J].