Meta-Phenylenediamine-Derived Silver-Containing Nanoporous Hyper-Cross-Linked Polymer: An Innovative Fluorescence Probe for S2O32- ion Detection in Aqueous Media

Fariba Nasimpour; Mohammadreza Mansournia; Alireza Badiei

doi:10.1007/s10895-024-03693-x

Meta-Phenylenediamine-Derived Silver-Containing Nanoporous Hyper-Cross-Linked Polymer: An Innovative Fluorescence Probe for S₂O₃^2- ion Detection in Aqueous Media

J Fluoresc. 2024 Apr 17. doi: 10.1007/s10895-024-03693-x. Online ahead of print.

Authors

Fariba Nasimpour¹, Mohammadreza Mansournia², Alireza Badiei³

Affiliations

¹ Department of Inorganic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran.
² Department of Inorganic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran. mansournia@kashanu.ac.ir.
³ School of Chemistry, College of Science, University of Tehran, Tehran, Iran. abadiei@ut.ac.ir.

PMID: 38630204
DOI: 10.1007/s10895-024-03693-x

Abstract

The meta-phenylenediamine polymer, when hyper-cross-linked, exhibits a minimal fluorescence intensity. However, the introduction of silver ions induces a significant increase in intensity, attributed to the plasmonic effect. This heightened intensity is selectively increased more upon the addition of thiosulfate ions. Capitalizing on this property, a fluorescence probe was developed. The correlation between fluorescence intensity reduction and S₂O₃^2- concentration follows a linear and consistent pattern. The precursor's response to diverse anions such as SO₄^2-, CO₃^2-, HPO₄^2-, Cr₂O₇^2-, F^-, Cl^-, Br^-, I^-, H₂PO₄^-, CH₃COO^-, NO₃^-, ClO^-, and HCO₃^- was also examined. Under optimal conditions, the probe exhibited a linear range of 0.5-3 µM with a detection limit of 0.01 µM. Its effectiveness was demonstrated in measuring thiosulfate concentrations in aqueous media.

Keywords: Aqueous media; Fluorescence probe; Hyper-cross-linked polymers; Thiosulfate ion.