Photoluminescent PMMA polymer films doped with Eu3+-β-diketonate crown ether complex

Photograph of PMMA/PEG blend film doped with 1% [Eu(tta)3(DB18C6)2(H2O)2] complex exhibiting red emission under UV irradiation at 366nm. [Display omitted] ► Effective interaction between the Eu3+-complex and the polymer matrix are observed. ► The luminescent films are homogeneous and preserve the po...

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Bibliographic Details
Published in:	Journal of photochemistry and photobiology. A, Chemistry. Vol. 251; pp. 154 - 159
Main Authors:	Gibelli, Edison B., Kai, Jiang, Teotonio, Ercules E.S., Malta, Oscar L., Felinto, Maria C.F.C., Brito, Hermi F.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 01-01-2013
Subjects:	Crown ethers Europium complexes Luminescent film PMMA Luminescent film PMMA Crown ethers Europium complexes
Online Access:	Get full text
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Summary:	Photograph of PMMA/PEG blend film doped with 1% [Eu(tta)3(DB18C6)2(H2O)2] complex exhibiting red emission under UV irradiation at 366nm. [Display omitted] ► Effective interaction between the Eu3+-complex and the polymer matrix are observed. ► The luminescent films are homogeneous and preserve the polymer aspects. ► Emission quantum efficiency for the Eu3+-doped polymer films increased significantly. ► PMMA provides efficient luminescence co-sensitization of the Eu3+ luminescent centers. In this work it is reported the photoluminescence sensitization effect of the bis(dibenzo-18-crown-6)diaquatris(thenoyltrifluoroacetonate)europium(III) compound, [Eu(tta)3(DB18C6)2(H2O)2], doped into a blend of poly(methylmethacrylate) (PMMA) and polyethylene glycol (PEG) in film form. The TGA results indicate that the Eu3+-complex precursor is immobilized in the polymer matrix by the interaction between the Eu3+ complex and the oxygen atoms of the PMMA polymer. The thermal behavior of these luminescent systems is similar to that of the undoped polymer. The emission spectra of the Eu3+-complex in the PMMA/PEG blends recorded at room temperature exhibit the characteristic bands arising from the 5D0→7FJ (J=0–4) intraconfigurational transitions. The emission quantum efficiency of the Eu3+ ion doped films increased significantly, indicating an effective interaction between the Eu3+-complex and the polymer matrix, and both the substitution of water molecules in the first coordination sphere and an efficient luminescence co-sensitization of the Eu3+ luminescent centers.
ISSN:	1010-6030 1873-2666
DOI:	10.1016/j.jphotochem.2012.10.015