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Título: | Luminescence behavior of Eu3+ with thenoyltrifluoroacetonate, sulfoxides and macrocyclics. |
Autor(es): | Brito, Hermi Felinto de Malta, Oscar Manoel Loureiro Carvalho, Carlos Alberto Alves de Menezes, Jorge Fernando Silva de Souza, L. R. Ferraz, Reginaldo |
Palavras-chave: | Sulfoxides Thenoyltrifluoroacetonate Europium Luminescence Macrocyclics |
Data do documento: | 1998 |
Referência: | BRITO, H. F. de et al. Luminescence behavior of Eu3+ with thenoyltrifluoroacetonate, sulfoxides and macrocyclics. Journal of Alloys and Compounds, v. 275-277, p. 254-257, jul. 1998. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0925838898003156>. Acesso em: 01 ago. 2012. |
Resumo: | In this work we present a study of the luminescence intensity of Eu(TTA) ?xL, where TTA5thenoyltrifluoroacetonate (L denotes 3 DBSO and PTSO sulfoxides, and derivatives of 15C5 and 18C6 macrocyclics). The complexes with 15-crown-5 ether ligand contain two H O molecules. The complexes were characterized by a microanalytical procedure, IR spectroscopy and molar conductance. They show 2 31 high luminescence mainly in the red region. The characteristic emission spectra of Eu in these compounds show uncommonly high 5 7 values of the V intensity parameters, reflecting the hypersensitive behavior of the D F transition and indicating that the rare earth 2 0 2 5 7 ion is in a highly polarizable chemical environment. The D F transition splitting, in the case of Eu(TTA) ?18C6, indicates more than 0 0 3 31 one site of symmetry occupied by Eu . |
URI: | http://www.repositorio.ufop.br/handle/123456789/1217 |
ISSN: | 09258388 |
Licença: | O periódico Journal of Alloys and Compounds concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3333160314163. |
Aparece nas coleções: | DEQUI - Artigos publicados em periódicos |
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ARTIGO_LuminescenceBehaviorthenoylTrifluoroacetonate.pdf | 77,7 kB | Adobe PDF | Visualizar/Abrir |
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