Synthesis and Photoluminescent Properties of Lanthanides Acetoacetanilide Complexes

被引：14

作者：

Souza, E. R. ^{[1
,2
]}

Zulato, C. H. F. ^{[1
,2
]}

Mazali, I. O. ^{[1
,2
]}

Sigoli, F. A. ^{[1
,2
]}

机构：

[1] Univ Campinas Unicamp, Lab Funct Mat Inst Chem, Campinas, SP, Brazil

[2] Univ Campinas Unicamp, Lab Funct Mat, Inst Chem, Campinas, SP, Brazil

来源：

JOURNAL OF FLUORESCENCE | 2013年 / 23卷 / 05期

基金：

巴西圣保罗研究基金会;

关键词：

Luminescence; Beta-diketone complexes; Terbium(III); Europium(III); ENERGY-TRANSFER; LUMINESCENT PROPERTIES; COORDINATION; CRYSTAL; EUROPIUM(III); MECHANISMS; LIGAND;

D O I：

10.1007/s10895-013-1219-5

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

This work reports on the photoluminescent properties of three new lanthanide complexes with acetoacetanilide (aaa), a beta-diketonate ligand. The complexes have the general molecular formulae [RE(aaa)(3)(H2O)], they are soluble in organic solvents such as ethanol and chloroform and insoluble in water. The energy of the triplet state was determined at about 4,700 cm(-1) higher than the D-5(4) emitting level of the Tb(III) ion, leading to an absolute quantum yield of 22 % for the [Tb(aaa)(3)(H2O)] complex. The photoluminescent properties were studied and the luminescence parameters of the [Eu(aaa)(3)(H2O)] complex were experimentally determined. The photostabilities of the complexes under continuous UV irradiation were measured and the data indicate low stability of the [Tb(aaa)(3)(H2O)] complex when the system is excited at the band attributed to energy transfer from the ligand to terbium(III) ion. However, its photostability is significantly improved under inert atmosphere.

引用

页码：939 / 946

页数：8

共 33 条

[1] Synthesis and IR spectral study of MoO2Cl2 molecular complexes with acetoacetanilides.: Crystal structure of MoO2Cl2 complex with acetoacet-2-toluidine [J].