金属离子导向合成两个金属配位聚合物:晶体结构和荧光性质（英文）

发布时间：2018-10-22 20:23

【摘要】：以2,5-呋喃二羧酸和六水硝酸锌/四水硝酸镉为原料,在溶剂热条件下,合成出2个金属有机配位聚合物,[Zn(FDC)(DMF)2]n(1)和{(Me2NH2)2[Cd2(FDC)3(H_2O)2]·4H_2O}n(2)(H2FDC=2,5-呋喃二甲酸,DMF=N,N-二甲基甲酰胺)。通过元素分析、红外光谱、差热分析、X射线粉末衍射和X射线单晶衍射等手段对配合物进行了结构表征。结果显示,化合物1为一维链结构,通过分子间氢键作用构筑成二维结构;而2为二维(4,4)网络结构。热稳定性表明化合物1脱去DMF配体后稳定到300℃;而2脱去配体水、阴离子和溶剂分子后结构立即发生坍塌。常温固态下,激发波长分别为303和350 nm时考察了配合物1和2的荧光性质,结果显示2个化合物均发射蓝色荧光(λmax=406,470 nm),荧光寿命分别为76.2和138.1 ns。
[Abstract]:Two organometallic coordination polymers [Zn (FDC) (DMF) _ 2] n (1) and {(Me2NH2) _ 2 [Cd2 (FDC) _ 3 (H _ 2O) _ 2] 4H_2O} n (2) (H _ 2F _ (DC) _ (25) -furanediformic acid, DMF=N,N- dimethyl formamide) were synthesized by using 2H _ (5-furan) dicarboxylic acid and zinc nitrate hexahydrate / cadmium nitrate tetrahydrate as raw materials under solvothermal conditions. [Zn (FDC) (DMF) _ 2] n (1) and {(Me2NH2) _ 2 [Cd2 (FDC) _ 3 (H _ 2O) _ 2] 4H_2O} n (2) were synthesized. The structures of the complexes were characterized by elemental analysis, infrared spectroscopy, differential thermal analysis, X-ray powder diffraction and X-ray single crystal diffraction. The results show that compound 1 is a one-dimensional chain structure, which is constructed by intermolecular hydrogen bonding, and 2 is a two-dimensional (4n4) network structure. The thermal stability indicated that compound 1 was stable to 300 鈩，

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