一种新的镧系金属有机骨架材料的合成、结构及荧光检测性质

Synthesis,Structure and Fluorescence Detection Properties of a New Lanthanide Metal-Organic Framework Material

利用溶剂热方法合成了一种以Tb^(3+)离子为中心的金属有机骨架材料[Tb_(2)(bpt)_(2)(H_(2)O)_(2)]·(DMA)_(4.5),并通过单晶X射线衍射(SXRD)、粉末X射线衍射(PXRD)、元素分析(EA)、热重分析(TGA)、傅里叶变换红外光谱(FTIR)以及荧光光谱技术(FS)表征了该材料的结构与基本物理化学性质.单晶衍射分析结果显示该材料具有包含一维直孔道的三维结构,结构中孔道窗口尺寸约为1.23 nm×1.10 nm.荧光分析测试结果表明该材料对Cr^(3+)离子有荧光响应,离子检测限低至0.22 mg/L,同时具有良好的选择性,在Cr^(3+)离子的荧光检测领域具有重要的应用潜力.

A new lanthanide metal-organic framework material,[Tb_(2)(bpt)_(2)(H_(2)O)_(2)]·(DMA)_(4.5),with Tb^(3+)ion as the metal center was synthesized by solvothermal method.The material was further characterized by single crystal X-ray diffraction(SXRD),powder X-ray diffraction(PXRD),elemental analysis(EA),thermogravimetric analysis(TGA),Fourier transform infrared spectroscopy(FTIR)and fluorescence spectroscopy(FS).The results of single crystal diffraction analysis show that the compound has a three-dimensional structure containing a one-dimensional straight channel with a channel window of ca.1.23 nm×1.10 nm.Fluorescence test results demonstrate that the detection limit for Cr^(3+) ions is as low as 0.22 mg/L,indicating that the compound has superior selectivity.It is expected to have potential application in the field of fluorescent detection of Cr^(3+) ions.