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采用水热法合成改性 MCM-41介孔分子筛;采用液相沉淀法合成了以磺基水杨酸及邻菲罗啉作为双配体的铕的配合物,找到其发光效果最好的配比,即n(Eu)∶n(SSA)∶n(phen)=1∶2∶1,并将发光效果最好的稀土配合物组装到改性后的 MCM-41中,合成了稀土配合物(Eu)/改性 MCM-41杂化发光材料,采用紫外光谱分析、元素分析、小角 XRD、红外光谱、荧光光谱和 TGA 对其结构和荧光性质进行了研究。结果表明,组装体具有 MCM-41典型结构并且在组装之后仍保留了 MCM-41的孔道结构;其荧光光谱具有Eu3+的特征荧光发射,发光强度大于纯配合物。改性 MCM-41后组装稀土配合物的发光效果更佳,热稳定性更好,更有利于实际应用。

Modified MCM-41 mesoporous molecular sieves were synthesized by hydrothermal method.Lanthanide complexes Eu-SSA-phen was synthesized by liquid precipitation method,the best ratio of sulfosalicylic acid and o-phenanthroline these two ligands was found,n(Eu)∶n(SSA)∶n(phen)=1∶2∶1 .Finally,lanthanide lumi-nescent complexes with the best glowing effect was assembled into modified MCM-41,and then synthesized lan-thanide complexes (Eu)/modified MCM-41 hybrid materials which were then characterized by SAXRD,IR spectra,fluorescent spectroscopy,thermal gravimetric analysis,for study the structure and fluorescence prop-erties.It showed that the hybrid materials had typical structure of MCM-41 and retained the same pore structure as MCM-41 after the assembly processing.The fluorescence spectra presented characteristic fluorescence-emis-sion of Eu3+.Compared with lanthanide complexes,the higher emission intensity and better thermal stability was observed,which was good for practical application.

参考文献

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