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

Meng Wu; Jiaqi Yi; Chenhui Yin; Qijun Sun; Lei Gao; Na Niu; Ligang Chen

doi:10.1016/j.foodchem.2023.135859

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

Food Chem. 2023 Aug 1:416:135859. doi: 10.1016/j.foodchem.2023.135859. Epub 2023 Mar 4.

Authors

Meng Wu¹, Jiaqi Yi¹, Chenhui Yin¹, Qijun Sun¹, Lei Gao², Na Niu³, Ligang Chen⁴

Affiliations

¹ College of Chemistry, Chemical Engineering and Resource Utilization, Key Laboratory of Forest Plant Ecology, Northeast Forestry University, Harbin 150040, China.
² College of Chemistry, Chemical Engineering and Resource Utilization, Key Laboratory of Forest Plant Ecology, Northeast Forestry University, Harbin 150040, China; Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin 150010, China.
³ College of Chemistry, Chemical Engineering and Resource Utilization, Key Laboratory of Forest Plant Ecology, Northeast Forestry University, Harbin 150040, China. Electronic address: niuna@nefu.edu.cn.
⁴ College of Chemistry, Chemical Engineering and Resource Utilization, Key Laboratory of Forest Plant Ecology, Northeast Forestry University, Harbin 150040, China. Electronic address: analchem@nefu.edu.cn.

PMID: 36898337
DOI: 10.1016/j.foodchem.2023.135859

Abstract

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 fluorescence 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.

Keywords: Chlorpyrifos; Fluorescence analysis; Grape; Nucleophile probe; Rhodamine derivative.

MeSH terms

Chlorpyrifos*
Fluorescence Resonance Energy Transfer
Gold / chemistry
Nanoparticles* / chemistry
Organophosphorus Compounds
Pesticides*
Vitis*

Substances

Chlorpyrifos
Pesticides
Organophosphorus Compounds
Gold