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Incorporation of a sulfur atom for developing a high-performance fluorescent probe for mercury ions.

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Title: Incorporation of a sulfur atom for developing a high-performance fluorescent probe for mercury ions.
Authors: Fu, Yanlin1 (AUTHOR), Fan, Yusheng1 (AUTHOR), Wang, Peitong2 (AUTHOR), Zhang, Weihua1 (AUTHOR), Ding, Yubin1 (AUTHOR) ybding@njau.edu.cn, Zhao, Fang-Jie2 (AUTHOR)
Source: Dyes & Pigments. Mar2026:Part 1, Vol. 246, pN.PAG-N.PAG. 1p.
Subjects: Mercury (Element), Sulfur, Biological specimens, Detection algorithms, Fluorescent probes, Environmental sampling
Abstract: Selective detection of mercury species in environmental and biological samples is of great importance to avoid mercury poisoning accidents. However, the design of a high performance fluorescent probe for mercury is still a challenging task. This is because the incorporation of a specific recognition unit for mercury usually requires tedious synthetic work. The development of alternative strategies for incorporating a highly selective and sensitive mercury recognition unit in small organic dye-based probes is meaningful. Herein, a selective, sensitive and reversible fluorescent probe named RC1 was designed for mercury ion sensing by incorporating a sulfur atom into the rhodamine-coumarin conjugated structure. The sensing mechanism was ascribed to the ring opening reaction at the spirolactam moiety in RC1 , which immediately produced a strong emissive mercury complex as RC1-Hg. The afforded RC1-Hg complex can be further utilized as a fluorescent turn-off probe for S2− through the regeneration of RC1. The RC1 probe emits almost none background fluorescence and is highly selective toward mercury ion over other 20 tested metal ions with a detection limit of 23 nM. Moreover, RC1 also exhibited a sensitive fluorescence turn-on response to methylmercury with a sensitivity of 13 nM and can be fabricated into paper-based test strips. Importantly, RC1 was successfully used for imaging mercury ion in living systems such as zebrafish and rice, demonstrating its ability for mercury monitoring in real biological samples. [Display omitted] • Probe RC1 was designed and synthesized for fluorescent sensing of mercury ions. • RC1 exhibited a fluorescence turn-on response to methylmercury with a LOD of 13 nM. • RC1 can be fabricated into paper-based test strips for mercury detection. • RC1-Hg can be utilized as a fluorescent probe for S2− by regenerating RC1. • RC1 was successfully applied for imaging mercury ion in rice and zebrafish. [ABSTRACT FROM AUTHOR]
Copyright of Dyes & Pigments is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 189496973
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PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Incorporation of a sulfur atom for developing a high-performance fluorescent probe for mercury ions.
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  Data: <searchLink fieldCode="AR" term="%22Fu%2C+Yanlin%22">Fu, Yanlin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fan%2C+Yusheng%22">Fan, Yusheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Peitong%22">Wang, Peitong</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Weihua%22">Zhang, Weihua</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ding%2C+Yubin%22">Ding, Yubin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ybding@njau.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhao%2C+Fang-Jie%22">Zhao, Fang-Jie</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Dyes+%26+Pigments%22">Dyes & Pigments</searchLink>. Mar2026:Part 1, Vol. 246, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Mercury+%28Element%29%22">Mercury (Element)</searchLink><br /><searchLink fieldCode="DE" term="%22Sulfur%22">Sulfur</searchLink><br /><searchLink fieldCode="DE" term="%22Biological+specimens%22">Biological specimens</searchLink><br /><searchLink fieldCode="DE" term="%22Detection+algorithms%22">Detection algorithms</searchLink><br /><searchLink fieldCode="DE" term="%22Fluorescent+probes%22">Fluorescent probes</searchLink><br /><searchLink fieldCode="DE" term="%22Environmental+sampling%22">Environmental sampling</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Selective detection of mercury species in environmental and biological samples is of great importance to avoid mercury poisoning accidents. However, the design of a high performance fluorescent probe for mercury is still a challenging task. This is because the incorporation of a specific recognition unit for mercury usually requires tedious synthetic work. The development of alternative strategies for incorporating a highly selective and sensitive mercury recognition unit in small organic dye-based probes is meaningful. Herein, a selective, sensitive and reversible fluorescent probe named RC1 was designed for mercury ion sensing by incorporating a sulfur atom into the rhodamine-coumarin conjugated structure. The sensing mechanism was ascribed to the ring opening reaction at the spirolactam moiety in RC1 , which immediately produced a strong emissive mercury complex as RC1-Hg. The afforded RC1-Hg complex can be further utilized as a fluorescent turn-off probe for S2− through the regeneration of RC1. The RC1 probe emits almost none background fluorescence and is highly selective toward mercury ion over other 20 tested metal ions with a detection limit of 23 nM. Moreover, RC1 also exhibited a sensitive fluorescence turn-on response to methylmercury with a sensitivity of 13 nM and can be fabricated into paper-based test strips. Importantly, RC1 was successfully used for imaging mercury ion in living systems such as zebrafish and rice, demonstrating its ability for mercury monitoring in real biological samples. [Display omitted] • Probe RC1 was designed and synthesized for fluorescent sensing of mercury ions. • RC1 exhibited a fluorescence turn-on response to methylmercury with a LOD of 13 nM. • RC1 can be fabricated into paper-based test strips for mercury detection. • RC1-Hg can be utilized as a fluorescent probe for S2− by regenerating RC1. • RC1 was successfully applied for imaging mercury ion in rice and zebrafish. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Dyes & Pigments is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.dyepig.2025.113353
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      – Code: eng
        Text: English
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        StartPage: N.PAG
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        Type: general
      – SubjectFull: Sulfur
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      – SubjectFull: Biological specimens
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      – SubjectFull: Detection algorithms
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      – SubjectFull: Fluorescent probes
        Type: general
      – SubjectFull: Environmental sampling
        Type: general
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      – TitleFull: Incorporation of a sulfur atom for developing a high-performance fluorescent probe for mercury ions.
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            NameFull: Fu, Yanlin
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            NameFull: Fan, Yusheng
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            – D: 01
              M: 03
              Text: Mar2026:Part 1
              Type: published
              Y: 2026
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