Issue 23, 2023

CuI-p-DPA coordination polymer isomers for “turn-on” fluorescence detection of thiophanate-methyl

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.

Graphical abstract: CuI-p-DPA coordination polymer isomers for “turn-on” fluorescence detection of thiophanate-methyl

Supplementary files

Article information

Article type
Paper
Submitted
08 ก.ย. 2566
Accepted
20 ต.ค. 2566
First published
20 ต.ค. 2566

Analyst, 2023,148, 5889-5895

CuI-p-DPA coordination polymer isomers for “turn-on” fluorescence detection of thiophanate-methyl

Q. Zhou, H. Zhao, D. Chen, H. Sun, K. Zhang, C. Wang, Q. Cao and L. Zheng, Analyst, 2023, 148, 5889 DOI: 10.1039/D3AN01540H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements