期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 -, 期 16, 页码 2963-2970出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201300142
关键词
Lanthanides; Luminescence; Organicinorganic hybrid composites; Mesoporous materials
资金
- National Natural Science Foundation of China (NSFC) [20971100, 91122003]
- Program for New Century Excellent Talents in University [NCET-08-0398]
9-Hydroxy-2-methyl-phenalenone (MHPO) was synthesized and modified with 3-(triethoxysilyl)propyl isocyanate (TEPIC) through a hydrogen atom addition reaction to achieve a new chemical linkage (named as MHPOSi). SBA-15 mesoporous silica organically functionalized with MHPOSi was synthesized. The MHPOSi was linked to tetraethoxysilane (TEOS) through a condensation process in the presence of Pluronic P123 surfactant as a template. New Ln3+ (Eu3+, Nd3+, Yb3+) organicinorganic mesoporous hybrid materials were prepared, in which the Ln3+ complexes are covalently attached to SBA-15 and have 1,10-phenanthroline (phen) as a second ligand. The resultant mesoporous hybrids were characterized by FTIR spectroscopy, small-angle X-ray diffraction, N2 adsorptiondesorption measurements, thermal analysis, and UV/Vis spectroscopy. They all have high surface areas, uniform mesostructures, and good crystallinity. The photophysical properties of the functionalized mesoporous SBA-15 networks are discussed in detail and they still present excitation capability in the visible region despite the modification of the organic silane. Subsequently, they exhibit characteristic visible (Eu3+) and near-infrared (NIR) luminescence (Nd+ and Yb3+).
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