摘要
[Eu(bpy)_2]^(3+) (bpy:2,2'-bipyridine) was encapsulated in hexagonalmesoporous materials MCM-41 and HMS. XRD spectra, ICP analysis, IR spectra, N_2 adsorptionmeasurements and the photoluminescence spectra were used to characterize the correspondingimpregnated samples. After the impregnation of [Eu(bpy)_2]^(3+), the BET surface, pore diameters andpore volume of the impregnated samples were decreased. All the impregnated samples exhibited thetypical photoluminescence of Eu^(3+) when excited with a xenon lamp. Compared with the impregnatedHMS, the impregnated MCM-41 samples show higher photoluminescence efficiency for the impregnation of[Eu(bpy)_2]^(3+). It suggests that MCM-41 is a more efficient host for the photoluminescence ofeuropium complexes than HMS.
采用浸渍的方法在MCM 41和HMS介孔材料孔内组装[Eu(bpy)2 ]3+ (bpy: 2, 2 联吡啶).所得介孔复合材料经XRD、ICP等离子发射光谱、IR、N2 吸附实验及光致发光谱进行了表征.实验结果表明:与介孔材料母体相比,组装稀土配合物后的介孔复合材料的BET比表面积、孔径和孔容均有所下降;组装稀土配合物的介孔复合材料在氙光源激发下,均发射出特征的Eu3+光致发光谱;与组装稀土配合物的HMS介孔复合材料相比,组装后的MCM 41介孔复合材料具有较高的光致发光效率.MCM 41介孔材料是一种比HMS合适的载体,有助于增强介孔材料孔内组装稀土配合物的光致发光效率.
基金
TheOpenProjectofNationalLaboratoryofSolidStateMicrostructures,TransCenturyTrainingProgrammeFoundationfortheTalentsbytheStateEducationCommission.
