Journal
DYES AND PIGMENTS
Volume 96, Issue 2, Pages 423-429Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2012.09.010
Keywords
Styrylindolium; Dye; Sensor; Fluorescence; Mercury; Intramolecular charge transfer
Funding
- NNSFC [21272172, 20972111, 21074093, 21004044), NCET-09-0894]
- SRF for ROCS
- SEM
- NSFT [12JCZDJC21000]
- State Key Lab
- Elemental-Organic Chemistry at Nankai University [1103]
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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. (C) 2012 Elsevier Ltd. All rights reserved.
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