中文摘要：

以稀土离子（La,Ce,Pr,Nd）与具有C3对称结构的芳香羧酸配体N,N＇,N″-三（4-苯甲酸基）-1,3,5-苯三甲酰胺（BTMC）为构筑单元,合成了4个同构的三维非穿插金属-有机骨架化合物[Ln（BTMC）（DMF）]·3H2O·2.5DMF[Ln=La（1）,Ce（2）,Pr（3）,Nd（4）].采用单晶X射线衍射、粉末X射线衍射（PXRD）、红外光谱和热重分析对其结构及稳定性进行了表征,并测试了它们捕获不同金属离子（La3＋,Ce3＋,Pr3＋,Nd3＋,Cd2＋,Cr3＋,Cu2＋）及吸附染料甲基橙和曙红的固态荧光光谱变化.结果表明,化合物对金属离子及染料均有一定吸附作用,捕获Cr3＋后荧光强度变化最大,说明对Cr3＋具有较好的识别作用.

英文摘要：

A series of 3D lanthanide metal-organic frameworks（MOFs） with similar structure, [Ln（BTMC）（DMF） ] · 2.5DMF. 3H2O[Ln=La（1）, Ce（2）, er（3）, Nd（4）, H3BTMC=N,N＇,N″-tris （4-earboxyphenyl） -1,3,5-benzenetricarboxamide ] , has been synthesized under solvothermal conditions. The structures and thermal-stable properties of the four compounds were characterized by single-crystal X-ray diffraction, powder X-ray diffraction（ PXRD）, Fourier transform infrared（FTIR） spectra and thermal gravimetrie （TG） analyses. The capacities of the compounds for capturing metal ions and dyes were investigated by solid state fluorescence spectra carefully, which indicated that after capturing different metal ions the emission peaks of the four compounds were blue-shift and exhibited a high Cr3＋-specific luminescence enhancement.