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Fluorescence emission modulation in singlefluoroforic submicro-sized silica particles

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Abstract

A new class of singlefluoforic submicro-sized spherical silica particles based on an ESIPT-exhibiting dye is presented in this work. The particles are able to generate a modulated response in the blue–green region varying the incident excitation wavelength. The submicro silica particles present monodisperse size distribution with a size range of 0.9–0.95 μm. The morphology and homogeneity combined with the observed fluorescence emission modulation and the absence of energy transfer between the fluorescent dyes open up new perspectives in the application of these fluorescent particles in the field of optical sensors and devices.

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Acknowledgments

We are grateful for scholarships and/or financial support from the Brazilian agencies CNPq, CAPES and FAPERGS.

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Authors and Affiliations

  1. Laboratório de Novos Materiais Orgânicos, Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil

    Umberto A. Kober, Leandra F. Campo, Fabiano S. Rodembusch & Valter Stefani

  2. Laboratório de Altas Pressões e Materiais Avançados, Instituto de Física, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, CEP 91501-970, Porto Alegre, Brazil

    Márcia R. Gallas

Authors
  1. Umberto A. Kober
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  2. Márcia R. Gallas
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  3. Leandra F. Campo
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  4. Fabiano S. Rodembusch
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  5. Valter Stefani
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Correspondence to Valter Stefani.

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Kober, U.A., Gallas, M.R., Campo, L.F. et al. Fluorescence emission modulation in singlefluoroforic submicro-sized silica particles. J Sol-Gel Sci Technol 52, 305–308 (2009). https://doi.org/10.1007/s10971-009-2075-2

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  • DOI: https://doi.org/10.1007/s10971-009-2075-2

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