Syntheses, characterization and fluorescent properties of six novel lanthanide complexes with N,N-diphenyl-2-(quinolin-8-yloxy)acetamide

被引：48
|
作者：
Wu, Wei-Na [1 ,2 ]
Tang, Ning [1 ,2 ]
Yan, Lan [1 ,2 ]
机构：
[1] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China
[2] Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
来源：
JOURNAL OF FLUORESCENCE | 2008年 / 18卷 / 01期
基金：
中国国家自然科学基金;
关键词：
lanthanide complexes; aryl amide; fluorescence properties; triplet state energy; complexation constant;
D O I：
10.1007/s10895-007-0244-7
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
Six novel complexes of lanthanide nitrates (Ln = La, Sm, Eu, Gd, Tb, Dy) with a amide type ligand, N-methyl-N-phenyl-2-(quinolin-8-yloxy)acetamide (L) have been prepared and characterized by elemental analysis, conductivity measurements, IR and H-1 NMR spectra. The fluorescence properties of the complexes and the triplet state energy of the ligand were studied in detail. The result indicates that, the triplet state energy level of the ligand matches better to the resonance level of Eu(III) than Tb(III). In addition, the fluorescence intensities of the Eu(III) complex in different solutions(tetrahydrofuran, acetone and acetonitrile) are stronger than that in solid state. This is probably due to the solvate effect and the stoichiometry change of ligand with Eu(III) ion in solutions.
引用
收藏
页码：101 / 107
页数：7
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