Modulating the Photophysical Properties of Azamacrocyclic Europium Complexes with Charge-Transfer Antenna Chromophores

被引：66

作者：

Bourdolle, Adrien ^{[2
]}

Allali, Mustapha ^{[1
]}

Mulatier, Jean-Christophe ^{[2
]}

Le Guennic, Boris ^{[2
]}

Zwier, Jurriaan M. ^{[1
]}

Baldeck, Patrice L. ^{[3
]}

Buenzli, Jean-Claude G. ^{[4
]}

Andraud, Chantal ^{[2
]}

Lamarque, Laurent ^{[1
]}

Maury, Olivier ^{[2
]}

机构：

[1] Cisbio Bioassays, F-30204 Bagnols Sur Ceze, France

[2] Univ Lyon 1, CNRS, Ecole Normale Super Lyon, UMR 5182, F-69007 Lyon, France

[3] Univ Grenoble 1, CNRS, UMR 5588, Spectrometrie Phys Lab, F-38402 St Martin Dheres, France

[4] Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland

来源：

INORGANIC CHEMISTRY | 2011年 / 50卷 / 11期

关键词：

TIME-RESOLVED FRET; LANTHANIDE COMPLEXES; CROSS-SECTIONS; 2-PHOTON-SENSITIZED LUMINESCENCE; 2-PHOTON-EXCITED LUMINESCENCE; EFFICIENT SENSITIZATION; OPTICAL-PROPERTIES; TERBIUM COMPLEXES; ENERGY-TRANSFER; MICROSCOPY;

D O I：

10.1021/ic200227b

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two europium complexes with bis(bipyridine) azamacrocyclic ligands featuring pendant arms with or without pi-conjugated donor groups are synthesized and fully characterized by theoretical calculations and NMR spectroscopy. Their photophysical properties, including two-photon absorption, are investigated in water and in various organic solvents. The nonfunctionalized ligand gives highly water-stable europium complexes featuring bright luminescence properties but poor two-photon absorption cross sections. On the other hand, the europium complex with an extended conjugated antenna ligand presents a two-photon absorption cross section of 45 GM at 720 nm but is poorly luminescent in water. A detailed solvent-dependent photophysical study indicates that this luminescence quenching is not due to the direct coordination of O-H vibrators to the metal center but to the increase of nonradiative processes in a protic solvent induced by an internal isomerization equilibrium.

引用

页码：4987 / 4999

页数：13

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