摘要
合成出了担载稀土有机配合物的无机 -有机杂化中孔发光材料 ( phen) 2 Eu/MCM-4 1 ,用 X射线衍射、红外光谱、荧光光谱和紫外 -可见漫反射光谱对所得样品进行了表征 ,并与相应的纯稀土配合物进行了比较 .结果表明 ,所得杂化材料具有典型的中孔材料 MCM-4 1的结构 ,且经组装后孔结构保持不变 ,在紫外光照射下 ,发出稀土离子的特征谱线 ,但与纯稀土配合物相比 ,其激发光谱发生蓝移 ,稀土 Eu3+ 所处的格位对称性降低 ,荧光寿命延长 .另外 ,对光谱性质进行了讨论 .
A novel hybrid inorganic-organic mesoporous luminescent material (phen) 2Eu/MCM-41 has been synthesized and characterized by XRD, IR, fluorescence and diffuse reflection spectra. In comparison with MCM-41, the hybrid mesoporous material has typical structure of MCM-41 and retains the same pore structure as MCM-41 after the assembly process. The hybrid mesoporous material shows characteristic emission spectra of Eu 3+ under UV irradiation, but the excitation spectrum has shifted to blue region compared to that of pure rare earth complex. The decrease of site symmetry of Eu 3+ has been found. The fluorescence lifetime of (phen) 2Eu/MCM-41 is longer than that of pure rare earth complex. The spectra of hybrid mesoporous material have been discussed.
出处
《应用化学》
CAS
CSCD
北大核心
2001年第5期380-383,共4页
Chinese Journal of Applied Chemistry
基金
九七三"稀土功能材料基础研究! (G19980 6 1310 )
国家自然科学基金! (2 97310 10 2 99710 30 )
国家杰出青年基金! (2 92 2 5 10 2
