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Study of Hybrid Silica-Polyethyleneglycol Xerogels by Eu3+ Luminescence Spectroscopy

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Abstract

Good optical quality Eu3+-doped silica-polyethyleneglycol hybrids were prepared by the sol-gel process. Thermomechanical analysis showed an increase of the glass transition temperature, due to the stiffness of the polymeric network, as the amount of Eu3+ increased. Europium luminescent properties were used to study structural evolution during the sol-gel transition. For lower doping concentrations dried gels present statistical distributions of Eu3+, typical of an amorphous environment, while for higher concentrations a crystalline-like environment of Eu3+ was observed. A broad emission band was observed in the visible part of the electromagnetic spectrum and assigned to the intrinsic emission from the hybrid polymeric network.

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Authors and Affiliations

  1. Institute of Chemistry—UNESP, P.O. Box 355, 14801-970, Araraquara, SP, Brazil

    S.J.L. Ribeiro, K. Dahmouche, C.A. Ribeiro, C.V. Santilli & S.H. Pulcinelli

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  1. S.J.L. Ribeiro
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  2. K. Dahmouche
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  3. C.A. Ribeiro
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  4. C.V. Santilli
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  5. S.H. Pulcinelli
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Ribeiro, S., Dahmouche, K., Ribeiro, C. et al. Study of Hybrid Silica-Polyethyleneglycol Xerogels by Eu3+ Luminescence Spectroscopy. Journal of Sol-Gel Science and Technology 13, 427–432 (1998). https://doi.org/10.1023/A:1008673211834

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  • DOI: https://doi.org/10.1023/A:1008673211834

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