A novel intelligently integrated MOF-based ratio fluorescence sensor for ultra-sensitive monitoring of TC in water and food samples

被引：77

作者：

Chen, Xiangzhen ^{[1
]}

Xu, Jun ^{[1
]}

Li, Yongxin ^{[1
]}

Zhang, Lina ^{[1
]}

Bi, Ning ^{[1
]}

Gou, Jian ^{[1
]}

Zhu, Taofeng ^{[2
]}

Jia, Lei ^{[1
]}

机构：

[1] Henan Polytech Univ, Coll Chem & Chem Engn, Jiaozuo 454000, Henan, Peoples R China

[2] Jiangsu Univ, Dept Pulm & Crit Care Med, Affiliated Yixing Hosp, 75 Tongzhenguan Rd, Yixing 214200, Jiangsu, Peoples R China

来源：

FOOD CHEMISTRY | 2023年 / 405卷

基金：

中国国家自然科学基金;

关键词：

Surface modification; ZIF-8; Multicolor fluorescence; Intelligent detection; Tetracycline; AQUEOUS-SOLUTION; TETRACYCLINE; METAL; NANOPARTICLE; ADSORPTION; PLATFORM; REMOVAL; ZIF-8;

D O I：

10.1016/j.foodchem.2022.134899

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this work, a high-precision visual and point-of-care testing (POCT) ratiometric fluorescent nanosensor for TC was constructed by embedding fluorescein (FL) into L-histidine modified ZIF-8 (LZIF-8) and chelating with rare earth citrate complex. Upon exposure to TC, the coordination and energy transfer between Eu3+ and TC make Eu3+ sensitized emission characteristic red fluorescence, while without prejudice to the emission peak intensity of FL. This ratiometric fluorescent probe with stable reference signal had the characteristics of high sensitivity (ultralow LOD = 5.99 nM) and selectivity and fast response kinetics (within 20 s). The high-bright fluorescence emission was beneficial to human eye recognition and it can realize semi-quantitative detection of TC in eggs, meeting the requirements of household use. In addition, the color can be read and analyzed quickly with the help of smart phone color analysis APP, and the semi-quantitative concentration of TC can be determined more conveniently.

引用

页数：9

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