Amino-functionalized Al-MOF modulated TpTt-COF with dual-emission for fluorescent and optosmart detecting tetracycline in food samples

被引：37
作者：
Li, Chunhua [1 ,2 ,3 ]
Xu, Xiao [1 ,2 ]
Ji, Yixin [1 ,2 ]
Wang, Fuli [1 ,2 ]
Shi, Yubo [1 ,2 ]
Zhao, Xin [1 ,2 ,3 ]
Liu, Jue [1 ,2 ,3 ]
Yang, Ying [1 ,2 ,3 ]
Zhao, Zhilei [1 ,2 ,3 ]
机构：
[1] Hebei Univ, Coll Qual & Tech Supervis, Baoding 071002, Peoples R China
[2] Hebei Univ, Natl & Local Joint Engn Res Ctr Metrol Instrument, Baoding 071002, Peoples R China
[3] Hebei Univ, Hebei Key Lab Energy Metering & Safety Testing Tec, Baoding 071002, Peoples R China
来源：
FOOD CHEMISTRY | 2023年 / 425卷
基金：
中国国家自然科学基金; 美国国家科学基金会;
关键词：
Metal -organic framework; Covalent -organic framework; Fluorescence detection; Visual analysis; Antibiotic residues; Food safety; ORGANIC FRAMEWORK; VISUAL DETECTION;
D O I：
10.1016/j.foodchem.2023.136476
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Tetracycline residues in animal-derived food pose serious harm to human health, making it demanded to develop simple and sensitive method for detecting tetracycline. Herein, a dual-emission synchronous response fluorescence probe is reported based on amino-functionalized Al-MOF modulated TpTt-COF (donate as NMT). NMT exhibits excellent dual-emission at 455 and 575 nm under single excitation. Tetracycline is sensitively detected through quenching the dual-emission of NMT. NMT specifically recognizes tetracycline through intermolecular hydrogen bonding between -OH/- NH2 of tetracycline and deprotonated O-/- NH- /C--N of NMT. A calibration curve is built between the fluorescence ratio and the tetracycline concentration with a detection limit of 0.014 & mu;mol/L. NMT is employed to detect tetracycline in milk, pork and chicken, and displays satisfactory recoveries of 94.39-105.67%, respectively. The optosmart sensor based on NMT and smartphone has been constructed for visually detecting tetracycline. This method provides routes to construct MOF-COF fluorescence probes and has good prospects in food analysis.
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页数：9
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