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

• Published in: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 267; no. Pt 2; p. 120580
• Main Authors: Mohammadi Ziarani, Ghodsi, moradi, Razieh, Mohajer, Fatemeh, Badiei, Alireza
• Format: Journal Article
• Language: English
• Published: England Elsevier B.V 15.02.2022; Elsevier
• Subjects: 4-Hydroxy-2-oxo-2H-chromene-3-carbaldehyde; Ag+ sensor; Chemical Sciences; Coordination chemistry; Fluorescent Dyes; Ions; Mesoporous silica; SBA-Pr-NHC; Spectrometry, Fluorescence; Water; SBA-Pr-NHC; 4-Hydroxy-2-oxo-2H-chromene-3-carbaldehyde; Ag+ sensor; Mesoporous silica; Ag(+) sensor
• ISSN: 1386-1425; 1873-3557
• DOI: 10.1016/j.saa.2021.120580

[Display omitted] •SBA-Pr-NHC as a selective fluorescent sensor for the detection of Ag+ ion.•SBA-15 reacted with 4-hydroxy-2-oxo-2H-chromene-3-carbaldehyde to give SBA-Pr-NHC.•The SBA hexagonal mesoporous structure has been preserved through functionalization.•Photoluminescence spectroscopy was applied to study the behavior of SBA-Pr-NHC.•The fluorescence emission recorded with the detection limits of 2.4 × 10−5 M. 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.