Cd(Ⅱ)有机骨架化合物的合成及其荧光性能  

Synthesis and Photoluminescence Property of A Cd(Ⅱ)Oganic Framework Compound

作　　者：朱文庆[1] 朱玉梦 李扬[1] 樊盼 张瑾 ZHU Wen-qing;ZHU Yu-meng;LI Yang;FAN Pan;ZHANG Jin(School of Environmental and Chemical Engineering,Xi’an Polytechnic University,Xi’an 710048,China)

机构地区：[1]西安工程大学环境与化学工程学院,陕西西安710048

出　　处：《合成化学》2020年第4期296-301,共6页Chinese Journal of Synthetic Chemistry

基　　金：陕西省科技攻关项目(2011K07-23);陕西省自然科学基础研究计划项目(2019JQ-546)。

摘　　要：以2,5-二羟基对苯二甲酸(H4-DHBDC)、1,4-双咪唑苯(BIB)为有机配体,Cd(NO3)2·4H2O为金属盐,采用溶剂热法在水/DMF溶剂体系中合成了一例Cd(Ⅱ)有机骨架化合物[Cd2(H2-DHBDC)2(BIB)2]n(CCDC:1471258),其结构和性能经红外光谱仪(FT-IR)、单晶X-射线衍射仪(SCXRD)、粉末衍射仪(PXRD)、元素分析(EA)、热重分析仪(TGA)和荧光分光光度计(FS)表征。结果表明:化合物属三斜晶系,P-1空间群。Cd^2+与H2DHBDC2-通过配位键形成了二维层状结构,进一步通过BIB双氮辅助配体形成了三维网络结构;化合物的骨架在364℃时开始坍塌,热稳定性较好;激发波长为376 nm时,化合物在发射波长500 nm处具有良好的光致发光性能。A Cd(Ⅱ)organic framework compound[Cd2(H2-DHBDC)2(BIB)2]n(CCDC:1471258)was synthesized from 2,5-dihydroxyterephthalic acid(H4-DHBDC),1,4-bisimidazolebenzene(BIB)and Cd(NO3)2·4 H2O by solvothermal method in water/DMF at 105℃.The structure and properties were characterized by infrared spectrometer(FT-IR),single crystal X-ray diffraction(SCXRD),powder X-ray diffraction(PXRD),elemental analysis(EA),thermogravimetric analysis(TGA)and fluorescence spectrophotometer(FS).The results indicate that the metal complex belongs to triclinic with P-1 space group.Additionally,a 2D layer structure is formed by coordination of central metal ion(Cd^2+)with H2DHBDC2-,which is further bridged by dinitrogen ligand of BIB,generating a 3D network.The skeleton of the complex begins to decompose at 364℃,which indicates the complex with a good thermal stability.The photoluminescence intensity of the complex was observed at an emission wavelength of 500 nm for an excitation wavelengths at 376 nm by FS analysis.

关 键 词：Cd(Ⅱ)配合物 合成 咪唑 晶体结构 热稳定性 光致发光性 

分 类 号：O641.4[理学—物理化学] O626[理学—化学]