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Issue 36, 2011
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Preparation of hybrid mesoporous silica luminescent nanoparticles with lanthanide(III) complexes and their exhibition of white emission

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Abstract

We chose dipicolinic acid as a tridentate chelating unit featuring ONO donors to react with lanthanide(III) ions to yield tight and protective N3O6 environments around the lanthanide(III) ions. We immobilized the lanthanide(III)-dipicolinic acid complexes on colloidal mesoporous silica with diameter smaller than 100 nm by a covalent bond grafting technique and obtained nearly monodisperse luminescent Eu-dpa-Si and Tb-dpa-Si functionalized hybrid mesoporous silica nanomaterials. These hybrid nanomaterials were characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, nitrogen adsorption-desorption, and photoluminescence spectroscopic techniques. The hybrid mesoporous silica nanoparticles exhibit intense emission lines upon UV-light irradiation, owing to the effective intramolecular energy transfer from the chromophore to the central lanthanide Eu3+ and Tb3+ ions. Furthermore, the functionalized nanomaterials can be turned to white light materials after annealing at high temperature.

Graphical abstract: Preparation of hybrid mesoporous silica luminescent nanoparticles with lanthanide(iii) complexes and their exhibition of white emission

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Publication details

The article was received on 28 Apr 2011, accepted on 27 Jun 2011 and first published on 15 Aug 2011


Article type: Paper
DOI: 10.1039/C1DT10779H
Citation: Dalton Trans., 2011,40, 9313-9319
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    Preparation of hybrid mesoporous silica luminescent nanoparticles with lanthanide(III) complexes and their exhibition of white emission

    D. Zhang, D. Tang, X. Wang, Z. Qiao, Y. Li, Y. Liu and Q. Huo, Dalton Trans., 2011, 40, 9313
    DOI: 10.1039/C1DT10779H

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