Luminescence of the films of europium (III) with thenoyltriuoroacetonate and macrocyclics.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorBrito, Hermi Felinto de-
Autor(es): dc.creatorMalta, Oscar Manoel Loureiro-
Autor(es): dc.creatorSouza, Lívia Ribeiro de-
Autor(es): dc.creatorMenezes, Jorge Fernando Silva de-
Data de aceite: dc.date.accessioned2019-11-06T13:33:16Z-
Data de disponibilização: dc.date.available2019-11-06T13:33:16Z-
Data de envio: dc.date.issued2015-04-01-
Data de envio: dc.date.issued2015-04-01-
Data de envio: dc.date.issued1999-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/4865-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/557950-
Descrição: dc.descriptionWe discuss the syntheses, properties and the luminescence of the complexes, Eu(TTA)3 á 2L á H2O, where TTA . thenoyltriuoroacetonate, L.15C5 (1,4,7,10-tetraoxa-13-azacyclopentadecane,13-phenyl) and 18C6 (2,3,11,12-dicyclohexano- 1,4,7,10,13,16-hexaoxacyclooctadecane). The ®lm complexes with 15C5 and 18C6 ligands contain only one water molecule. The Xk experimental intensity parameters (k.2 and 4) and the ratio between the intensities of the 5D0 ® 7F0 and 5D0 ® 7F2 transitions (R02) were obtained for the compounds Eu(TTA)3 á 2(15C5) á H2O (X2 .39.5 ´ 10ÿ20 cm2, X4 .8.9 ´ 10ÿ20 cm2 and R02 .0.0087) and Eu(TTA)3 á 2(18C6) á H2O (X2.39.3 ´ 10ÿ20 cm2, X4 .5.8 ´ 10ÿ20 cm2 and R02 .0.0098). The macrocyclic compounds, powder form, were also measured. The luminescence spectra of the Eu(TTA)3 á 2L á H2O ®lms give the largest X2 intensity parameter, due to the hypersensitive 5D0 ® 7F2 transition and indicating that the rare earth ion is in a polarizable chemical environment. The lifetimes of the macrocyclics complexes in the powder and ®lm were measured.-
Idioma: dc.languageen-
Direitos: dc.rightsO Periódico Journal of Non-Crystalline Solids concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3577170048304.-
Título: dc.titleLuminescence of the films of europium (III) with thenoyltriuoroacetonate and macrocyclics.-
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