Estudos fotoluminescentes em compostos de íons terras raras coordenados por um derivado carbazólico
In: Química Nova, Jg. 33 (2010), Heft 10
Online
academicJournal
Zugriff:
[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.
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Estudos fotoluminescentes em compostos de íons terras raras coordenados por um derivado carbazólico
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Autor/in / Beteiligte Person: | Martins, Renata Figueredo ; Neri, Cláudio Roberto ; Sousa Filho, Paulo Cesar de ; Serra, Osvaldo Antonio ; Oliveira, Kleber Thiago de |
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Zeitschrift: | Química Nova, Jg. 33 (2010), Heft 10 |
Veröffentlichung: | Sociedade Brasileira de Química, 2010 |
Medientyp: | academicJournal |
ISSN: | 0100-4042 (print) |
DOI: | 10.1590/S0100-40422010001000022 |
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