Synthesis and photophysical properties of novel organic–inorganic hybrid materials covalently linked to a europium complex

A novel sol–gel derived hybrid material (classed as Eu-DBM-Si) covalently grafted with Eu(DBM-OH) 3·2H 2O (where DBM-OH = o-hydroxydibenzoylmethane) was prepared through the primary β-diketone ligand DBM-OH. All the synthesized ligands were characterized by 1H NMR, elemental analyses and Fourier tra...

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Published inJournal of photochemistry and photobiology. A, Chemistry. Vol. 200; no. 2; pp. 318 - 324
Main Authors Guo, Xianmin, Guo, Huadong, Fu, Lianshe, Zhang, Hongjie, Carlos, L.D., Deng, Ruiping, Yu, Jiangbo
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.12.2008
Subjects
Europium complex
Organic–inorganic hybrid composite
Photophyscial property
β-Diketone
Photophyscial property
Organic–inorganic hybrid composite
β-Diketone
Europium complex
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Summary:A novel sol–gel derived hybrid material (classed as Eu-DBM-Si) covalently grafted with Eu(DBM-OH) 3·2H 2O (where DBM-OH = o-hydroxydibenzoylmethane) was prepared through the primary β-diketone ligand DBM-OH. All the synthesized ligands were characterized by 1H NMR, elemental analyses and Fourier transform infrared spectra (FTIR). The resultant Eu-DBM-Si material exhibited good transparent and homogenous property. Compared to the Eu-DBM hybrid prepared by physically doped silicon dioxide with Eu(DBM-OH) 3·2H 2O, the Eu-DBM-Si hybrid presented more efficient ligand-to-Eu 3+ energy transfer and a significant improvement in the measured emission quantum yield. Furthermore, the photophysical properties of these hybrid materials, such as the photoluminescence (PL) spectra, PL intensities, symmetry properties, lifetime decays, and Judd-Ofelt parameters were also investigated in detail.
ISSN:1010-6030
1873-2666
DOI:10.1016/j.jphotochem.2008.08.016