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An upconversion nanosensor with phenolic-like functionality for accurate identification of chlorpyrifos in grapes

文献类型： 外文期刊

作者： Wu, Meng 1 ; Yi, Jiaqi 1 ; Yin, Chenhui 1 ; Sun, Qijun 1 ; Gao, Lei 1 ; Niu, Na 1 ; Chen, Ligang 1 ;

作者机构： 1.Northeast Forestry Univ, Coll Chem Chem Engn & Resource Utilizat, Key Lab Forest Plant Ecol, Harbin 150040, Peoples R China

2.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Harbin 150010, Peoples R China

关键词： Fluorescence analysis; Rhodamine derivative; Nucleophile probe; Chlorpyrifos; Grape

期刊名称：FOOD CHEMISTRY （ 影响因子：8.8； 五年影响因子：8.6 ）

ISSN： 0308-8146

年卷期： 2023 年 416 卷

页码：

收录情况： SCI

摘要： The inappropriate use of the organophosphorus pesticide chlorpyrifos (CPF) in agricultural production could be harmful to the environment and non-target organisms. Here, we prepared a nano-fluorescent probe with phenolic function based on covalently coupled rhodamine derivatives (RDP) of upconverted nano-particles (UCNPs) for trace detection of chlorpyrifos. Due to the fluorescence resonance energy transfer (FRET) effect in the system, the fluorescence of UCNPs is quenched by RDP. The phenolic-functional RDP is converted to the spironolactone form when it captures chlorpyrifos. This structural shift prevents the FRET effect in the system and allows the fluo-rescence of UCNPs to be restored. In addition, the 980 nm excitement conditions of UCNPs will also avoid interference from non-target fluorescent backgrounds. This work has obvious advantages in terms of selectivity and sensitivity, which can be widely applied to the rapid analysis of chlorpyrifos residues in food samples.

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