Estudos fotoluminescentes em compostos de íons terras raras coordenados por um derivado carbazólico

[RE(czb)3(H2O)2] complexes (where RE = Eu3+, Tb3+, Gd3+; and czb = 4-(9H-carbazol-9-yl)benzoato) have been synthesized and characterized. The Gd3+ complex was used to determine the triplet state energy of the czb ligand. Photoluminescence measurements of the complexes have been carried out under UV excitation. The Tb3+ complex exhibited a strong green luminescence indicating an efficient antenna effect, whereas the Eu3+ complex showed low red luminescence and the Gd3+ complex a blue-green luminescence from the ligand. The luminescence lifetimes and quantum yields have also been measured for the evaluation of the spectroscopic behavior of the complexes.

Bibliographic Details

Main Authors:	Martins,Renata Figueredo, Neri,Cláudio Roberto, Sousa Filho,Paulo Cesar de, Serra,Osvaldo Antonio, Oliveira,Kleber Thiago de
Format:	Digital revista
Language:	Portuguese
Published:	Sociedade Brasileira de Química 2010
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010001000022
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