一种用于检测四环素和对硝基苯酚的高稳定性镉(Ⅱ)金属有机骨架  

A highly stable cadmiummetal⁃organic framework for detecting tetracycline and p⁃nitrophenol

作　　者：张欢 王记江[1] 范广[2] 唐龙[1] 岳二林 白超 王潇[1] 张玉琦[1] ZHANG Huan;WANG Jijiang;FAN Guang;TANG Long;YUE Erlin;BAI Chao;WANG Xiao;ZHANG Yuqi(Yan′an City Key Laboratory of New Energy&New Functional Materials,Shaanxi Key Laboratory of Chemical Reaction Engineering,College of Chemistry and Chemical Engineering,Yan′an University,Yan′an,Shaanxi 716000,China;Department of Chemistry and Chemical Engineering,Xianyang Normal University,Xiangyang,Shaanxi 712000,China)

机构地区：[1]延安大学化学与化工学院,延安市新能源新功能材料重点实验室,陕西省化学反应工程重点实验室,延安716000 [2]咸阳师范学院化学与化工学院,咸阳712000

出　　处：《无机化学学报》2024年第3期646-654,共9页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21373178);陕西省自然科学基础研究计划(No.2021JQ-614);陕西省教育厅自然科学基金(No.21JK0978);陕西高校青年创新团队资助。

摘　　要：采用水-溶剂热法合成了1例金属有机骨架(MOF):{[Cd(L)_(0.5)(4,4′-bpy)_(0.5)]·H_(2)O}_(n)(1),其中H_(4)L=(1,1′∶4′,1″-三联苯)-2,2″,4,4″-四羧酸,4,4′-bpy=4,4′-联吡啶)。通过单晶X射线衍射、元素分析、粉末X射线衍射、热重分析以及红外光谱分析对配合物1的结构进行了表征。单晶结构分析表明1为三维结构,属于单斜晶系,C2/c空间群,Cd连接L^(4-)和4,4′-bpy形成二维平面结构,层与层之间通过L^(4-)连接,构筑成了三维网状结构。该MOF表现出良好的稳定性并且可以通过荧光猝灭法检测四环素(TET)和对硝基苯酚(4-NP),四环素和对硝基苯酚的检出限分别为0.15和0.062μmol·L^(-1)。此外,还研究了其荧光猝灭机理。1可成功应用于延河水样中TET和4-NP含量的测定。A new metal-organic framework(MOF){[Cd(L)0.5(4,4′-bpy)0.5]·H_(2)O}_(n)(1),where H_(4)L=(1,1′∶4′,1″-terphe-nyl)-2,2″,4,4″-tetracarboxylic acid,4,4′-bpy=4,4′-bipyridine,was synthesized by hydro-solvothermal method.The structure of complex 1 was characterized by single-crystal X-ray diffraction,elemental analysis,powder X-ray dif-fraction,thermogravimetric analysis,and infrared spectrum analysis.The analysis of single crystal structure shows that 1 is a 3D structure,belonging to the monoclinic crystal system,C2/c space group.Cdconnects L4-and 4,4′-bpy to form a 2D plane structure,and the layers are connected by L4-to form a 3D network structure.The MOF shows good stability and can be used for the detection of tetracycline(TET)and p-nitrophenol(4-NP)by fluores-cence quenching.The detection limits of TET and 4-NP were 0.15 and 0.062μmol·L^(-1),respectively.In addition,the fluorescence quenching mechanism of 1 was also studied.1 can be successfully applied to the determination of TET and 4-NP content in Yanhe water samples.CCDC:2264479.

关 键 词：金属有机骨架 晶体结构 四环素 对硝基苯酚 

分 类 号：O614.242[理学—无机化学]