两种金属镉-有机骨架材料的合成、结构表征及发光性能测试

将4,4'-三苯胺二甲酸(H_2L)和硝酸镉分别加入1,4-二(咪唑)苯(bimb)和1,4-二(吡啶-4-甲氧基)苯(bpmb)中,在水热条件下合成两种新型的金属镉有机-无机配位聚合物{Cd L(bimb)_(0.5)]·2H_2O}n(1)和Cd(HL)_2(bpmb)_(0.5)]_n(2).利用X射线衍射(XRD)确定两种聚合物的结构,用元素分析、红外光谱(IR)、热重(TG)和粉末X射线衍射(PXRD)等对其结构进行表征,并在室温下测试两种配位聚合物的荧光属性.实验结果表明:配位聚合物1属三斜晶系,P 1空间群,其骨架为二维层状结构;配位聚合物2属单斜晶系,C2/c空间群,是由一维锯齿链通过氢键作用形成的3D超分子聚合物.

Synthesis,Characterizations and Photochemical Propertiesof Two Novel Cd(Ⅱ) Metal Organic Frameworks

Adding 4,4′-(phenylazanediyl)dibenzoic acid (H₂L) ligand and cadmium(Ⅱ) ions to 1,4-bis-(imidazol-1-yl)benzene (bimb) and 1,4-bis(pyridine-4-ylmethoxy)benzene (bpmb), we synthesized two new types of metal cadmium organic inorganic coordination polymers {［CdL(bimb)_0.5］·2H₂O}_n(1) and ［Cd(HL)2(bpmb)_0.5］_n(2) under the hydrothermal conditions. We determined the structure of the two polymers by means of XRD, and characterized their structures with the help of elemental analysis, IR spectroscopy, TG and powder X ray diffraction(PXRD). The fluorescence properties of two kinds of coordination polymers were tested at room temperature. The experimental results show that coordination polymer 1 crystallizes in the triclinic space group P1, and its framework is a two dimensional layered structure. Coordination polymer 2 crystallizes in the monoclinic space group C2/c, and it’s a three dimensional supramolecular polymer formed bythe H bond of one dimensional zigzag chains.