一个由多羧酸构筑的含镉基MOF的合成、表征及荧光识别硝基苯  

Synthesis,Structure and Fluorescence Sensing for Nitrobenzene of a Cd(Ⅱ)-based MOF Constructed by Polycarboxylic Acid

作　　者：莫荷芳 谭皓 唐金凤 农红彩 黄鑫源 崔连胜 Mo Hefang;Tan Hao;Tang Jinfeng;Nong Hongcai;Huang Xinyuan;Cui Liansheng(School of Chemical and Environmental Engineering,Baise University,Baise 533000,China)

机构地区：[1]百色学院化学与环境工程学院,广西百色533000

出　　处：《山东化工》2022年第18期32-35,39,共5页Shandong Chemical Industry

基　　金：2020年大学生创新创业训练项目“含锌(II)基金属有机骨架材料(Zn-MOFs)的合成及对抗生素的荧光识别”(202010609060);2021年度广西高校中青年教师科研基础能力提升项目“金属铽有机骨架材料的合成及其对重金属离子的荧光识别”(2021KY0741)。

摘　　要：利用1,4-二(亚甲基苯)双咪唑(bimb)和2,4,6-三(3-苯甲酸基)吡啶(H3(t-3-cpp))作为配体,与Cd(NO)2·4HO通过溶剂热法合成了一个Cd-MOF:[Cd(t-3-cpp)(bimb)] n,并利用X-射线单晶衍射分析、元素分析和红外光谱对其结构进行了表征。X-射线单晶衍射分析结果表明该配合物属于三斜晶系的P-1空间群。拓扑分析结果表明该配合物为2-节点(3,4)-连接的二维拓扑框架结构,其Schlafli符号为{4^(2).6^(3).8}{4^(2).6}。荧光猝灭实验结果表明该Cd-MOF能有效荧光识别硝基苯。浓度-荧光实验结果显示,基于3σ/Ksv,该Cd-MOF对硝基苯的检测限为3.25×10^(-7)mol/L。A Cd(II)-MOF,named [Cd(t-3-cpp)(bimb)]n,was synthesized using 1,4-bis(imidazol-1-ylmethyl)benzene(bimb),2,4,6-tri(4-carboxylphenyl)pyridine H(t-3-cpp) as ligands under the condition of solvothermal,and characterized by X-ray single crystal diffraction,elemental analysis,IR spectra. X-ray single crystal diffraction analysis exhibits that the complex belongs to triclinic crystal system,P-1 space group.The result of topology analysis shows that the complex possesses a 2-nodal(3,4)-connected two-dimension topology framework with the Schlafli symbol {4^(2).6^(3).8}{4^(2).6}.Fluorescence quenching experiments show that the Cd-MOF can effectively fluorescence sensing nitrobenzene. The concentration-fluorescence experimental result showed that the detection limit of Cd-MOF for NB is 3.25×10^(-7)mol/L based on 3σ/Ksv.

关 键 词：Cd-MOF 晶体结构 荧光猝灭 硝基苯 

分 类 号：TQ201[化学工程—有机化工] O621.13[理学—有机化学]