Construction of a novel flavonol fluorescent probe for copper (II) ion detection and its application in actual samples

被引:4
|
作者
Xiao, Wei [1 ]
Zhang, Qing [1 ]
You, Dong Hui [1 ]
Li, Nian Bing [1 ]
Zhou, Guang Ming [1 ]
Luo, Hong Qun [1 ]
机构
[1] Southwest Univ, Sch Chem & Chem Engn, Chongqing 400715, Peoples R China
基金
中国国家自然科学基金;
关键词
Flavonol; Fluorescence probe; Copper ion; Food;
D O I
10.1016/j.saa.2024.124175
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
Copper is an essential trace element in the human body, and its level is directly related to many diseases. While the source of copper in human body is mainly intake from food, then the detection of copper ions (Cu2+) in food becomes crucial. Here, we synthesized a novel probe (E)-3-hydroxy-2-styryl-4H-benzo[h]chromen-4-one (NSHF) and explored the binding ability of NSHF for Cu2+ using nuclear magnetic resonance hydrogen spectroscopy (1H NMR), high-resolution mass spectrometry (HRMS), Job's plot method and density functional theory (DFT). NSHF shows the advantages of fast response time, good selectivity and high sensitivity for Cu2+. The fluorescence intensity ratio (F/F0) of NSHF shows a good linear relationship with the concentration of Cu2+ and the detection limit is 0.061 mu M. NSHF was successfully applied to the detection of Cu2+ in real samples. In addition, a simple and convenient Cu2+ detection platform was constructed by combining NSHF with a smartphone and a UV lamp, which can realize the rapid detection of Cu2+. This work provides an effective tool for the real-time detection of Cu2+.
引用
收藏
页数:8
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