Photoluminescence properties of dinuclear lanthanide complexes in visible and near-infrared region

被引：12

作者：

Zhou Yonghui ^{[1
,2
]}

Chen Mindong ^{[2
]}

Guo Shengli ^{[2
]}

Xu Jianqiang ^{[2
]}

Gao Guizhi ^{[2
]}

Kong Qinggang ^{[2
]}

He Gang ^{[2
]}

Li Jun ^{[2
]}

Ma Yan ^{[2
]}

Guo Yan ^{[2
]}

Zheng Youxuan ^{[1
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, Nanjing Natl Lab Microstruct, State Key Lab Coordinat Chem, Nanjing 210093, Peoples R China

[2] Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Nanjing 210044, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2010年 / 28卷 / 05期

关键词：

tetrapyrido(3,2-a:2 ', 3 '-c:3 ', 2 ''-h:2 ''', 3 '''-j) phenazine; beta-diketone; dinuclear lanthanide complex; characteristic luminescence; PHOTOPHYSICAL PROPERTIES; EUROPIUM COMPLEXES; METAL-COMPLEXES; ENERGY-TRANSFER; LUMINESCENT; ELECTROLUMINESCENCE; ER3+; LN; SENSITIZATION; SPECTROSCOPY;

D O I：

10.1016/S1002-0721(09)60174-5

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Several dinuclear lanthanide complexes of Ln(2)(HTH)(6)TPPHZ (Ln=Eu, Sm, Er, Nd, Yb, Ho; TPPHZ=Tetrapyrido (3,2-a:2',3'-c:3',2 ''-h:2"',3"'-j) phenazine; HTH=4,5,5,6,6,6-heptafluroro-1-(2-thienyl)hexane-1,3-dione were synthesized and their photoluminescence properties were investigated. After ligand-mediated excitation, all the complexes showed the characteristic luminescence of the corresponding Ln(III) ions in the visible and NIR regions attributed to energy transfer from the ligands to the metal center. For Eu-2(HTH)(6)TPPHZ complex, the quantum efficiency was calculated as 9.6% with the major D-5(0) lifetime (477.86 mu s) by the equation Phi=tau(obs)/tau(R), where tau(obs) was observed luminescence lifetime and tau(R) was radiative (or natural) lifetime (5 ms), and 14.9% with air-equilibrated aqueous [Ru(bpy)(3)]((II))center dot 2Cl(-) solution as a standard sample (Phi(std)=2.8%), in CH2Cl2 solution at room temperature.

引用

页码：660 / 665

页数：6

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