Novel europium and gadolinium complexes with methaneseleninate as ligand: Synthesis, characterization and spectroscopic study

被引：7

作者：

Souza, A. P. ^{[1
]}

Rodrigues, L. C. V. ^{[3
]}

Brito, H. F. ^{[3
]}

Alves, S., Jr. ^{[2
]}

Malta, O. L. ^{[2
]}

机构：

[1] Univ Fed Pernambuco, CAA, BR-55002970 Caruaru, PE, Brazil

[2] Univ Fed Pernambuco, Dept Quim Fundamental, CCEN, BR-50590470 Recife, PE, Brazil

[3] Univ Sao Paulo, Dept Quim Fundamental, Inst Quim, BR-05508900 Sao Paulo, Brazil

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2012年 / 15卷

关键词：

Lanthanides; Methaneseleninate; Luminescence; Nephelauxetic effect; RARE-EARTH IONS; OVERLAP POLARIZABILITY; LANTHANIDE COMPOUNDS; LUMINESCENT; INTENSITIES; COVALENCY;

D O I：

10.1016/j.inoche.2011.09.047

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The methaneseleninate and 1,10-phenanthroline were used as ligands in the synthesis of new lanthanide complexes. The photostability, emission quantum yield (q) and quantum efficiency (eta) of the D-5(0) emitting level of the Eu3+ ion were determined. An energy level diagram was used to establish the most relevant channels involved in the ligand-to-metal intramolecular energy transfer process. The nephelauxetic effect was investigated to assess the covalency of the ligand-metal chemical bond. The values of the experimental 4f-4f intensity parameters, suggest that this ion is in a chemical environment less polarisable than in the case of complexes with beta-diketonates as ligands. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：97 / 101

页数：5

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