基于双咪唑和二元羧酸配体的配位聚合物的合成、表征和发光性质研究

利用水热法合成了2种新的双咪唑及二元羧酸配体镉配合物Cd(sdc)(bipe)]·H_2O(1)和Cd(bpdc)(bipe)(H_2O)](2)bipe=bis(4-imidazolphenoxy)ethane,H_2sdc=4,4’-sulfonyldibenzoic acid,H_2bpdc=biphenyl-4,4’-dicarboxylic acid].通过元素分析、红外光谱(IR)、X射线单晶衍射和热重分析(TG)等方法对其进行表征,并测试了2种化合物的荧光性质.化合物1展示了一个具有{4~4·6~2}拓扑的(4,4)-连接的sql二维空间网络结构,配体与金属间荷移跃迁化合物2显示了一个具有(4~(12)·6~3)的六连接pcu网状拓扑结构.荧光测试结果显示,配体与金属间发生的荷移跃迁使得化合物1和2的荧光发射峰与配体bipe相比明显发生了红移.

The self-assembly of coordination polymers based on bis(4-imidazolphenoxy)ethane and two dicarboxylic acids:synthesis,structures and luminescent properties

Two new entangled coordination polymers,Cd (sdc) (bipe)] · H2 O (1) andCd(bpdc) (bipe) (H2O)] (2),bipe =bis(4-imidazolphenoxy) ethane,H2 sdc =4,4'-sulfonyldibenzoic acid,H2 bpdc =biphenyl-4,4'-dicarboxylic acid],have been synthesized under hydrothermal conditions and characterized by elemental analyses,IR spectrum,single crystal X-ray diffraction,TG and so on.Compound 1 exhibits a 2-fold interpenetration of(4,4)-connected sql network.Compound 2 displays a three-fold interpenetration of pcu framework.The fluorescence properties of these two compounds are tested.Both of the emission peaks of the two compounds exhibited obvious red shift comparing with organic ligand,which can be attributed to the charge transfer between ligand and metal ions.