Synthesis and photophysical properties of novel organic–inorganic hybrid materials covalently linked to a europium complex |
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| Authors: | Xianmin Guo Huadong Guo Lianshe Fu Hongjie Zhang LD Carlos Ruiping Deng Jiangbo Yu |
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| Institution: | aState Key Laboratory of Application of Rare Earth Resources, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Remin Street, Changchun 130022, PR China;bGraduate School of the Chinese Academy of Sciences, Changchun 130022, PR China;cDepartment of Physics, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal |
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| Abstract: | A novel sol–gel derived hybrid material (classed as Eu-DBM-Si) covalently grafted with Eu(DBM-OH)3·2H2O (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)3·2H2O, the Eu-DBM-Si hybrid presented more efficient ligand-to-Eu3+ 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. |
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| Keywords: | Organic– inorganic hybrid composite Photophyscial property β -Diketone Europium complex |
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