Preparation of hybrid mesoporous silica luminescent nanoparticles with lanthanide(III) complexes and their exhibition of white emission
作者： Daojun Zhang , Duihai Tang , Xuemin Wang , Zhen-an Qiao , Yantao Li
DOI: 10.1039/C1DT10779H
关键词:
摘要: We chose dipicolinic acid as a tridentate chelating unit featuring ONO donors to react with lanthanide(III) ions yield tight and protective N3O6 environments around the ions. immobilized lanthanide(III)-dipicolinic complexes on colloidal mesoporous silica diameter smaller than 100 nm by covalent bond grafting technique obtained nearly monodisperse luminescent Eu-dpa-Si Tb-dpa-Si functionalized hybrid nanomaterials. These nanomaterials were characterized powder X-ray diffraction, scanning electron microscopy, transmission thermogravimetric analysis, nitrogen adsorption-desorption, photoluminescence spectroscopic techniques. The nanoparticles exhibit intense emission lines upon UV-light irradiation, owing effective intramolecular energy transfer from chromophore central lanthanide Eu3+ Tb3+ Furthermore, can be turned white light materials after annealing at high temperature.
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