| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 176709 | Dyes and Pigments | 2013 | 6 Pages |
A novel water soluble Hg2+-selective chemosensor using a styrylindolium dye as both colorimetric and fluorometric reporting group has been synthesized and characterized. The chemosensor exhibits a specific Hg2+ selectivity to discriminate between Hg2+ and chemically close ions by using a NO2S2 chelating unit as the ion binding site. Due to the Hg2+-induced intramolecular charge transfer, the chemosensor shows a visible colorimetric change from red to yellow, leading to potential production of both visual and fluorometric detection of Hg2+ cation both in water and in aqueous ethanol solutions.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A water soluble Hg2+-selective chemosensor has been synthesized. ► Styrylindolium dye was selected as both colorimetric and fluorescent reporting group. ► The discrimination between Hg2+ and chemically close ions is achieved by using NO2S2 as an ion binding site. ► The chemosensor is based on the intramolecular charge-transfer mechanism. ► The selective binding of Hg2+ leads to a visible change in color from red to yellow.
