一种痕量监测2,4,6-三硝基苯酚的锌基配位聚合物荧光探针的构筑  

Design and synthesis of a Zn(Ⅱ)‑based coordination polymer as a fluorescent probe for trace monitoring 2,4,6‑trinitrophenol

作　　者：孙述文[1] 王高峰[1] SUN Shuwen;WANG Gaofeng(Department of Applied Chemistry,Yuncheng University,Yuncheng,Shanxi 044000,China)

机构地区：[1]运城学院应用化学系,运城044000

出　　处：《无机化学学报》2025年第4期753-760,共8页Chinese Journal of Inorganic Chemistry

基　　金：山西省基础研究计划(自由探索类)面上项目(No.20210302123086)资助。

摘　　要：基于对苯二甲酸(H_(2)bdc)和2,7-双(4-吡啶基)-9,9-二甲基芴(mfdp)配体,通过溶剂热法构筑了一个Zn(Ⅱ)基配位聚合物:{[Zn_(2)(bdc)_(2)(mfdp)]_(2)·4DMA·2Me_(2)NH·3H_(2)O}_(n)(1)(DMA=N,N-二甲基乙酰胺),并用红外光谱、元素分析、热重和单晶X射线衍射等进行了结构表征。在配合物1中,相邻的锌离子具有相同的{ZnNO_(4)}配位构型,共同构成轮桨状的构筑单元。由拓扑结构分析可知,该配合物具有二重互穿的{4^(12)·6^(3)}结构。荧光传感实验表明配合物1的荧光能够被2,4,6-三硝基苯酚猝灭,且具有很高的灵敏度(检测限LOD=0.164μmol·L^(-1),猝灭常数KSV=6.65×10^(4) L·mol^(-1))和选择性。A Zn(Ⅱ)-based coordination polymer(CP),{[Zn_(2)(bdc)_(2)(mfdp)]_(2)·4DMA·2Me_(2)NH·3H_(2)O}_(n)(1),was synthe-sized by solvothermal method based on H_(2)bdc and mfdp,where H_(2)bdc=1,4-benzenedicarboxylic acid,mfdp=2,7-bis(4-pyridyl)-9,9-dimethylfluorene,and DMA=N,N-dimethylacetamide.It was characterized by FTIR,elemental analy-sis,TGA,and single-crystal X-ray diffraction.In 1,two adjacent zinc ions lie in the same{ZnNO_(4)}geometrical con-figurations,forming a paddle-wheel building block.Complex 1 displays 2-fold interpenetrating frameworks with{4^(12)·6^(3)}topology and with the emission peak situated at 385 nm,which offers a good foundation to be integrated as a chemical sensor.The fluorescence sensing experiments showed that the LOD(limit of detection)of 2,4,6-trinitrophe-nol(TNP)was 0.164μmol·L^(-1),and the quenching constant(KSV)was 6.65×10^(4) L·mol^(-1),indicating the excellent detection ability of trace analytes in DMA.CCDC:2384331.

关 键 词：芴 配位聚合物 Zn(Ⅱ) 荧光探针 芳香硝基化合物 

分 类 号：O614.241[理学—无机化学]