Dual mechanism of energy transfer in benzoate sensitized luminescence of Eu3+ and Tb3+

被引：0
|
作者：
Schrott, W
Buchner, H
Steiner, UE
机构：
来源：
JOURNAL OF INFORMATION RECORDING | 1996年 / 23卷 / 1-2期
关键词：
electronic energy transfer; luminescence; rare earth ion complexes;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Benzoate has been studied as a sensitizer of Eu3+ and Tb3+ luminescence in aqueous and methanolic solution. In solutions with low concentrations of the lanthanide ions the mechanism is dynamic involving free benzoate triplets. At higher concentrations a switchover to a static mechanism involving complexed benzoate occurs. In the case of EU(3+) the dynamic sensitization is 3 times as efficient as the static one, which is explained by CT-quenching of singlet benzoate in the complex. The emission quantum yield of Eu3+ and Tb3+ benzoate complexes increases with the number of benzoate ligands.
引用
收藏
页码：79 / 84
页数：6
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