Synthesis of SBA-Pr-NHC as a selective fluorescent sensor for the detection of Ag+ ion in aqueous media

Ghodsi Mohammadi Ziarani; Razieh Moradi; Fatemeh Mohajer; Alireza Badiei

doi:10.1016/j.saa.2021.120580

Synthesis of SBA-Pr-NHC as a selective fluorescent sensor for the detection of Ag⁺ ion in aqueous media

Spectrochim Acta A Mol Biomol Spectrosc. 2022 Feb 15;267(Pt 2):120580. doi: 10.1016/j.saa.2021.120580. Epub 2021 Nov 5.

Authors

Ghodsi Mohammadi Ziarani¹, Razieh Moradi², Fatemeh Mohajer², Alireza Badiei³

Affiliations

¹ Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Tehran P. O. Box 1993893973, Iran. Electronic address: gmohammadi@alzahra.ac.ir.
² Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Tehran P. O. Box 1993893973, Iran.
³ School of Chemistry, College of Science, University of Tehran, Tehran, Iran. Electronic address: abadiei@ut.ac.ir.

PMID: 34776379
DOI: 10.1016/j.saa.2021.120580

Abstract

SBA-Pr-NHC as a novel silica-based chemosensor was synthesized through the functionalization of mesoporous silica SBA-15 material with 4-hydroxy-2-oxo-2H-chromene-3-carbaldehyde, which was successfully immobilized to the surface of mesoporous silica, and its hexagonal mesoporous structure has been preserved. Photoluminescence spectroscopy was applied to study the sensing behavior of SBA-Pr-NHC, which displayed high selectivity for sensing Ag⁺ ion in aqueous media. After the addition of trace amounts of Ag⁺ ions into the aqueous solution, a significant enhancement of fluorescence emission has occurred with the detection limits of 2.4 × 10^-5 M.

Keywords: 4-Hydroxy-2-oxo-2H-chromene-3-carbaldehyde; Ag(+) sensor; Mesoporous silica; SBA-Pr-NHC.

MeSH terms

Fluorescent Dyes*
Ions
Spectrometry, Fluorescence
Water*

Substances

Fluorescent Dyes
Ions
Water