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.
作者
李泳志
张涵
王刚丁
隋艳伟
侯磊
王尧宇
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)
出处
《无机化学学报》
北大核心
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。
关键词
抗生素
金属有机骨架
晶体结构
荧光传感
antibiotic
metal-organic framework
crystal structure
fluorescence sensing
