LUMINESCENT SUPRAMOLECULAR ARCHITECTURES - A CYCLODEXTRIN MODIFIED WITH A EUROPIUM(III) CROWN SWING

被引：66

作者：

PIKRAMENOU, Z

NOCERA, DG

机构：

[1] MICHIGAN STATE UNIV,DEPT CHEM,E LANSING,MI 48824

[2] MICHIGAN STATE UNIV,CTR FUNDAMENTAL MAT RES,E LANSING,MI 48824

来源：

INORGANIC CHEMISTRY | 1992年 / 31卷 / 04期

关键词：

D O I：

10.1021/ic00030a002

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new photoactive supramolecular assembly featuring a cyclodextrin modified with a Eu3+ subset-of aza crown ether has been prepared. We report the complete characterization of the crown-modified cyclodextrin as well as the synthesis and photophysical properties when Eu3+ occupies the aza receptor site. The luminescence properties of the cyclodextrin appended with Eu3+ subset-of aza mimic that of the simple Eu3+ subset-of aza complex. However, enhanced europium emission is observed upon the introduction of benzene to solutions of the supramolecular assembly. We attribute this enhancement to an absorption-energy-transfer-emission process from benzene in the cavity of cyclodextrin to Eu3+ ion residing in the appended aza macrocycle.

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页码：532 / 536

页数：5

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