Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/72124
Type: Artigo de periódico
Title: Spectroscopic study of transparent self-standing films of (3-glycidoxypropyl) trimethosysilane and (3-trimethoxysilylpropyl) ethylenediamine doped with europium complexes
Author: de Farias, RF
Alves, S
Belian, MF
Vieira, MRS
de Souza, JM
Pedrosa, GG
de Sa, GF
Abstract: By using (3-glycidoxypropyl) trimethosysilane (GPTMS) and (3-trimethoxysilylpropyl) ethylenediamine (TSPED) as precursors, transparent self-standing films doped with the luminescent complexes Eu(hfC)(3) . bipy and Eu(hfc)(3) . terpy were prepared. The doped films were so studied from a spectroscopic point of view. It is verified that the film composition exerts effects on both, the intensity and lifetime of the emission process. For the GPTMS and TSPED films the measured lifetimes gave the values 250 and 183 mus respectively, for the complex Eu(hfC)(3) . terpy. The TSPED matrix provides emissions with higher intensities, but lower lifetimes. For the GPTMS films an opposite behavior is observed. Comparing the emission spectra for GPTMS films doped with the complexes Eu(hfC)(3)bipy and Eu(hfc)(3)terpy, it is verified that not only the chemical composition of GPTMS or the type of ligand involved in the complex, but also the symmetry of the complex used as dopant, will be of prominent importance to the spectroscopic properties of the obtained doped films. (C) 2003 Elsevier B.V. All rights reserved.
Subject: silanes
luminescence
europium
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/S0925-3467(03)00027-2
Date Issue: 2003
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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