Study of energy transfer in a naphthalene-linked crown ether Eu3+ complex:: the effect of the orientation of the naphthalene π-plane with respect to the Eu3+ ion

被引：11

作者：

Bhattacharyya, S ^{[1
]}

Sousa, LR

Ghosh, S

机构：

[1] Presidency Coll, Dept Chem, Calcutta 700073, W Bengal, India

[2] Ball State Univ, Dept Chem, Muncie, IN 47306 USA

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 297卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(98)01078-1

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 energy transfer (ET) from naphthalene (N) to EU3+ has been studied in complexes of the Eu3+ ion with 2,3-naphtho-17-crown-5, 2,3-naphtho-20-crown-6, 1,8-naphtho-21-crown-6 and 1,5-naphtho-22-crown-6, respectively, using the NO ion as the counter anion in EtOH glass at 77 K. Both the ET efficiency and the N-phosphorescence quenching show a strong dependence on the orientation of the N-pi-plane with respect to the Eu3+ ion. The results suggest that an exchange mechanism involving the lowest excited triplet state of N and D-5(2) states of the rare-earth ions is mainly operating. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：154 / 164

页数：11

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