Synthesis and photochemical properties of new coumarin-derived ionophores and their alkaline-earth and lanthanide complexes

被引：46

作者：

Alonso, MT ^{[1
]}

Brunet, E ^{[1
]}

Juanes, O ^{[1
]}

Rodríguez-Ubis, JC ^{[1
]}

机构：

[1] Univ Autonoma Madrid, Fac Ciencias, Dept Quim Organ, E-28049 Madrid, Spain

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2002年 / 147卷 / 02期

关键词：

alkaline-earth; lanthanide; chelate; fluorescence; Stokes' shifts;

D O I：

10.1016/S1010-6030(01)00628-1

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：

Several new ionophores derived from crown ethers and iminodiacetic subunits attached to 3-aroylcoumarins have been synthesized and fully characterized. The alkaline-earth complexes of these new ligands were studied from their UV-visible and fluorescence data. Some systems displayed strong bathochromic shifts upon complexation with Mg2+, that may make them useful signaling devices of this cation. The corresponding Eu3+ and Tb3+ chelates were easily formed and their photophysical properties were measured. In all the cases, lanthanide emission lifetimes were in the range of milliseconds albeit quantum yields were low. Possible energy-transfer mechanisms are discussed. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：113 / 125

页数：13

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