Cited by 23Molecular Sensors and Ion DetectionSulfur Compounds in BiologyRedox biology and oxidative stress

A Redox-Switchable Colorimetric Probe for “Naked-Eye” Detection of Hypochlorous Acid and Glutathione

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Han, Qian, Zhou, Fang, Wang, Yue, Feng, Huan, Meng, Qingtao, Zhang, Zhiqiang, Zhang, Run·2019·Molecules

Abstract

We report the development of a new colorimetric probe (L-ol) for investigations of the redox process regulated by hypochlorous acid (HOCl) and glutathione (GSH). The HOCl/GSH redox-switching cycle process was investigated in detail by UV-vis absorption spectroscopy, colorimetric analysis assay and high-resolution mass spectrometry (HRMS). The switchable absorbance responses were attributed to the HOCl-induced oxidation of the p-methoxyphenol unit to the benzoquinone derivative (L-one) and sequential reduction of L-one to hydroquinone (L-ol’) by GSH. In phosphate-buffered saline (PBS) buffer, the absorbance of L-ol at 619 nm underwent a remarkable bathochromic-shift, accompanied by a color change from pale yellow to blue in the presence of HOCl. With further addition of GSH, the absorbance of L-one exclusively recovered to the original level. Meanwhile, the blue-colored solution returned to the naive pale yellow color in the presence of GSH. The detection limits for HOCl and GSH were calculated to be 6.3 and 96 nM according to the IUPAC criteria. Furthermore, L-ol-loaded chromatography plates have been prepared and successfully applied to visualize and quantitatively analyze HOCl in several natural waters.

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  • The oxidant couple HOCl/OCl− is an endogenous microbicidal agent.

    “The oxidant couple HOCl/OCl− is an endogenous microbicidal agent [158].”

    From The Role of Reactive Species on Innate Immunity (2022) · cites this paper as [158]

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Authors
Han, Q., Zhou, F., Wang, Y., Feng, H., Meng, Q., Zhang, Z., & Zhang, R.
Affiliations
University of Science and Technology Liaoning (CN)
Corresponding author
  • Meng, Qingtao
  • Zhang, Zhiqiang
  • Zhang, Run
Venue
Molecules
Publisher
MDPI AG
Published
2019-07-04
Volume
24
Issue
13
Pages
2455
ISSN
1420-3049 (ISSN-L)
OpenAlex
W2954647009
Cited by
23
References
54
Citations by year
2026: 2 · 2025: 3 · 2024: 4 · 2023: 1 · 2022: 4 · 2021: 4 · 2020: 4 · 2018: 1
FWCI
1.20
Type
journal article
Language
en
Open access
Locations
  • Molecules (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • National Natural Science Foundation of China (21601076)
  • Australian Research Council (DE170100092)
  • Talent Program-Outstanding Youth Science Project, Liaoning (XLYC1807199)
Topics
  • Physical Sciences › Chemistry › Spectroscopy › Molecular Sensors and Ion Detection
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Sulfur Compounds in Biology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
hypochlorous acid detection, glutathione detection, benzoquinone, hydroquinone reduction, bathochromic shift, naked-eye detection, natural water analysis
MeSH terms
Color, Colorimetry, Glutathione, Hydroquinones, Hypochlorous Acid, Oxidation-Reduction, Spectrophotometry, Ultraviolet, Time Factors, Water, Molecular Probes, Benzoquinones

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