New colorimetric rhodamine–helicene “OFF–ON” fluorescence sensor based on FRET for quantitative and qualitative Hg <sup>2+</sup> determination

A fluorescent sensor (DGM), integrating rhodamine 6G and [5]helicene, enables highly selective Hg²⁺ detection with a 21 ppb limit observed as a distinct colourimetric change. Its sensitivity and on-site applicability make it ideal for monitoring mercury in water samples.

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Publication Details

Journal
New Journal of Chemistry
Published
2026-01-01
DOI
https://doi.org/10.1039/d5nj03667d
Primary Topic
Molecular Sensors and Ion Detection
Type
article
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article

New colorimetric rhodamine–helicene “OFF–ON” fluorescence sensor based on FRET for quantitative and qualitative Hg 2+ determination

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article

New colorimetric rhodamine–helicene “OFF–ON” fluorescence sensor based on FRET for quantitative and qualitative Hg 2+ determination

Krit Setthakarn, Nirawit Kaewnok, Thanasat Sooksimuang, Nantanit Wanichacheva, Sopida Thavornpradit, Natdhera Sanmanee, Watthanachai Buaban, Arthorn Loisruangsin
article en

Abstract

A fluorescent sensor (DGM), integrating rhodamine 6G and [5]helicene, enables highly selective Hg²⁺ detection with a 21 ppb limit observed as a distinct colourimetric change. Its sensitivity and on-site applicability make it ideal for monitoring mercury in water samples.

New Journal of ChemistryVol. 50(4)
Kasetsart University (TH), Thailand National Metal and Materials Technology Center (TH), Silpakorn University (TH)
Clean water and sanitation
Openalex Percentile: Top 96%
Molecular Sensors and Ion Detection
DOISourceOpenAlex
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