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Preparation and optical properties of functionalized zirconia–silica xerogels displaying a multicolor emission at UV excitation

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Abstract

A simple procedure for the functionalization of europium-doped zirconia–silica sol–gel composites with 1,10-phenanthroline is demonstrated. The functionalized materials display a multicolor emission at UV excitation, containing two components: a red component coming from Eu(phen)2(NO3)3 and a blue component from Zr(IV)-1, 10-phenanthroline complexes. Room-temperature diffuse reflectance spectra and excitation/luminescence spectra are used to describe the optical properties of the hybrid zirconia–silica composites. The functionalized samples are characterized by X-ray diffraction, electron microscopy and IR-spectroscopy. Excitation spectra prove an efficient energy transfer between 1,10-phenanthroline and the Eu3+ ion.

Graphical Abstract

A simple procedure for functionalization of europium-doped zirconia–silica sol–gel composites with 1,10-phenanthroline is demonstrated. The functionalized materials display a multicolor emission at UV excitation. Luminescence spectra of inorganic and hybrid gels at 330 nm excitation are presented. The Eu3+ 5 D 0 → 7 F 0,1,2,3,4 f–f electronic transitions are denoted as 0–0, 0–1, 0–2, 0–3 and 0–4.

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Acknowledgments

This work was supported by the project BeyondEverest FP7-REGPOT-2011-1. The authors thank M. Bredol for experimental help.

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Authors and Affiliations

  1. Department of Physical Chemistry, University of Sofia “St. Kliment Ohridski”, J. Bourchier Blvd. 1, 1164, Sofia, Bulgaria

    Stoyan Gutzov, Jaklin Missirian & Nina Danchova

  2. Department of Organic Chemistry, University of Sofia “St. Kliment Ohridski”, J. Bourchier Blvd. 1, 1164, Sofia, Bulgaria

    Stanimir Stoyanov

Authors
  1. Stoyan Gutzov
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  2. Jaklin Missirian
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  3. Nina Danchova
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  4. Stanimir Stoyanov
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Correspondence to Stoyan Gutzov.

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Gutzov, S., Missirian, J., Danchova, N. et al. Preparation and optical properties of functionalized zirconia–silica xerogels displaying a multicolor emission at UV excitation. J Sol-Gel Sci Technol 77, 342–347 (2016). https://doi.org/10.1007/s10971-015-3859-1

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  • DOI: https://doi.org/10.1007/s10971-015-3859-1

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