具有AIE效应的UiO-67型金属有机骨架合成及其对呋喃类抗生素的荧光检测

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中图分类号:O614 文献标志码:A 文章编号:1671-5489(2025)05-1516-07

Synthesis of UiO-67 Type MOF with AIE Effect and Its Fluorescent Detection of Nitrofuran Antibiotics

GUO Huadong,LIU Jianguo,SU Yanan(College of Chemistry ,Changchun Normal University, Changchun 13o032,China)

Abstract: We designed and synthesized a metal organic framework material tpe-UiO-67 with UiO-67 type by using biphenyl dicarboxylic acid modified with tetraphenylethylene as a linker with aggregation induced emission (AIE) properties and a mixed ligand strategy. We characterized it by using Fourier transform infrared spectroscopy, X-ray powder diffraction, 1H nuclear magnetic resonance spectra and thermogravimetric analysis,and applied it to detect nitrofuran antibiotics in aqueous solutions. The experimental results show that tpe-UiO-67 has stable chemical properties and excellent luminescence performance,and can detect nitrofuran antibiotics in aqueous solution with high sensitivity. The fluorescence quenching eficiency is linearly correlated with antibiotic concentration when the antibiotic concentration in the environment is not less than 2.0×10-5mol/L

Keywords: metal organic framework material; nitrofuran antibiotics; detection limit; fluorescentprobe;aggregation induced effect

硝基呋喃抗生素(NFs)广泛用于治疗各种细菌或病原微生物感染[1],但过量使用该类药物易导致细菌的耐药性,自2002年起,NFs被中国农业部规定严禁添加在任何食用动物饲料中.但由于其成本低、易获得且抗菌效力高,目前仍被许多农场非法使用[2-3],因此开发一种检测生物组织和食品中NFs的方法十分必要.荧光检测因其操作简单、选择性和灵敏度高、检测限低、检测范围宽而得到广泛应用[4-7].

近年来,金属-有机骨架(metal-organic framework,MOFs)因其有序结构和较好的可调控性而在荧光探针、吸附和催化等领域引起人们广泛关注[8-9].其中,UiO-67是由联苯二甲酸与 Zr(IV) 连接而成的具有 fcu拓扑结构的多孔MOFs材料,其优良的化学稳定性使其成为理想的荧光探针材料载体[10].通过对联苯二甲酸配体进行化学修饰,引人发光性能优良的生色基团,是制备新型荧光探针材料的有效途径[1-12]。(剩余10117字)

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