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A 1-hydroxy-2,4-diformylnaphthalene-based fluorescent probe and its detection of sulfites/bisulfite

Shi, Qing; Shen, Ling Yi; Xu, Hong; Wang, Zhi Yong; Yang, Xian Jiong; Huang, Ya Li; Redshaw, Carl; Zhang, Qi Long


Qing Shi

Ling Yi Shen

Hong Xu

Zhi Yong Wang

Xian Jiong Yang

Ya Li Huang

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Professor Carl Redshaw
Professor of Inorganic Materials Chemistry and REF Lead for Chemistry

Qi Long Zhang


A novel 1-hydroxy-2,4-diformylnaphthalene-based fluorescent probe L was synthesized by a Knoevenagel reaction and exhibited excellent sensitivity and selectivity towards sulfite ions (SO32−) and bisulfite ions (HSO3−). The detection limits of the probe L were 0.24 μM using UV-Vis spectroscopy and 9.93 nM using fluorescence spectroscopy, respectively. Furthermore, the fluorescent probe L could be utilized for detection in real water samples with satisfactory recoveries in the range 99.20%~104.30% in lake water and 100.00%~104.80% in tap water by UV-Vis absorption spectrometry, and in the range 100.50%~108.60% in lake water and 102.70%~103.80% in tap water by fluorescence spectrophotometry.


Shi, Q., Shen, L. Y., Xu, H., Wang, Z. Y., Yang, X. J., Huang, Y. L., …Zhang, Q. L. (2021). A 1-hydroxy-2,4-diformylnaphthalene-based fluorescent probe and its detection of sulfites/bisulfite. Molecules, 26(11), Article 3064.

Journal Article Type Article
Acceptance Date May 12, 2021
Online Publication Date May 21, 2021
Publication Date Jun 1, 2021
Deposit Date May 21, 2021
Publicly Available Date Oct 27, 2022
Journal Molecules
Electronic ISSN 1420-3049
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 26
Issue 11
Article Number 3064
Keywords Fluorescent probe; Sulfite/bisulfite; Crystal structure; Real sample detection
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Published article (5.1 Mb)

Copyright Statement
Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// 4.0/).

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