一种二维金属有机骨架用于水溶液中呋喃妥因和呋喃西林的检测  

A two⁃dimensional metal⁃organic framework for the determination of nitrofurantoin and nitrofurazone in aqueous solution

作　　者：李泳志 张涵[1] 王刚丁 隋艳伟[1] 侯磊 王尧宇[2] LI Yongzhi;ZHANG Han;WANG Gangding;SUI Yanwei;HOU Lei;WANG Yaoyu(School of Materials and Physics,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China;College of Chemistry&Materials Science,Northwest University,Xi′an 710069,China)

机构地区：[1]中国矿业大学材料与物理学院,徐州221008 [2]西北大学化学与材料科学学院,西安710069

出　　处：《无机化学学报》2025年第2期245-253,共9页Chinese Journal of Inorganic Chemistry

基　　金：江苏省基础研究专项资金(基础研究计划)青年基金(No.BK20241634);浙江省博士后科研择优资助项目(No.ZJ2024123);中央高校基本科研业务费项目(No.2022QN1089)资助。

摘　　要：在溶剂热条件下通过2,5-双(2H-四唑-5-基)对苯二甲酸配体(H4dtztp)与稀土Eu3+自组装得到了一例二维铕金属有机骨架[Eu(dtztp)0.5(H2dtztp)0.5(DMF)3]·0.113H2O(Eu-MOF),其中DMF为N,N-二甲基甲酰胺。利用X射线单晶衍射、粉末X射线衍射、热重分析和元素分析等技术确定了Eu-MOF的空间结构、相纯度和稳定性,同时,对Eu-MOF的固态荧光以及抗生素检测功能进行了探究。结果表明:Eu-MOF属于三斜晶系,P1空间群,晶胞参数a=1.018(7)nm,b=1.103(8)nm,c=1.252(9)nm,α=115.963(2)°,β=92.604(2)°,γ=96.556(2)°。Eu-MOF在紫外灯照射下显示出明显的红色发光性能,且对水溶液中的呋喃妥因(NFT)和呋喃西林(NFZ)表现出高选择性的检测效果,检测限分别为3.88和5.44μmol·L^(-1)。通过实验和理论计算相结合的方法揭示了Eu-MOF对NFT和NFZ的荧光检测机理。Herein,a two-dimensional europium-based metal-organic framework[Eu(dtztp)0.5(H2dtztp)0.5(DMF)3]·0.113H2O(Eu-MOF)was obtained through self-assembly of 2,5-bis(2H-tetrazol-5-yl)terephthalic acid ligand(H4dtztp)with Eu3+under solvent thermal conditions,where DMF is N,N-dimethylformamide.The spatial structure,phase purity,and thermal stability of Eu-MOF were characterized by single-crystal X-ray diffraction,powder X-ray diffraction,elemental analysis,and thermogravimetric analysis.Meanwhile,the solid-state fluorescence and antibiotic detection functions of Eu-MOF were also investigated.The results show that Eu-MOF crystallizes in triclinic system,P1 space group with cell parameters:a=1.018(7)nm,b=1.103(8)nm,c=1.252(9)nm,α=115.963(2)°,β=92.604(2)°,γ=96.556(2)°.Eu-MOF displayed obvious red luminescence under ultraviolet light at 365 nm,as well as showed highly selective detection for nitrofurantoin(NFT)and nitrofurazone(NFZ)in aqueous solution with detection limits of 3.88 and 5.44μmol·L^(-1),respectively.The fluorescence detection mechanism of Eu-MOF for NFT and NFZ was revealed by the combination of experiment and theoretical calculation.CCDC:2378208.

关 键 词：抗生素 金属有机骨架 晶体结构 荧光传感 

分 类 号：O614.338[理学—无机化学]