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CuI-p-DPA coordination polymer isomers for “turn-on” fluorescence detection of thiophanate-methyl.
- Source :
-
Analyst . 12/7/2023, Vol. 148 Issue 23, p5889-5895. 7p. - Publication Year :
- 2023
-
Abstract
- Three copper iodide coordination polymer (CuI-p-DPA) isomers were prepared from the fluorescent organic ligand p-DPA and cuprous iodide (CuI) under different solvothermal conditions, which exhibited quenched fluorescence behaviors after forming coordination polymers (CPs). These CuI-p-DPA isomers showed discrepant fluorescence responses to thiophanate-methyl (TM). Among these CuI-p-DPA isomers, α-CuI-p-DPA exhibited the maximum fluorescence enhancement after its incubation with TM in aqueous solution. The fluorescence enhancement mechanism was that TM competed with the ligand p-DPA to coordinate with CuI clusters, and then α-CuI-p-DPA released p-DPA into the solution and induced fluorescence enhancement. The present detection method possesses the advantages of good selectivity, high sensitivity, short response time, and strong anti-interference ability with a linear range of 0.5–100 μM and a detection limit of 0.01 μM. This study not only reveals that the spatial structures of CPs play an important role in the fluorescence response ability, but also provide a new fluorescence signal-on analysis method to rapidly and sensitively determine the pesticide residue for TM. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00032654
- Volume :
- 148
- Issue :
- 23
- Database :
- Academic Search Index
- Journal :
- Analyst
- Publication Type :
- Academic Journal
- Accession number :
- 173769645
- Full Text :
- https://doi.org/10.1039/d3an01540h