A "turn-on" fluorescent sensor for the selective detection of mercuric ion in aqueous media.
A water-soluble turn-on fluorescent sensor for Hg(II) is described. Incorporation of soft thioether donors into an aniline-derived ligand framework that can be linked to a fluorescein platform affords sensor MS1, which shows a approximately 5-fold increase in integrated emission upon addition of 1 equiv of Hg(II). The synthesis and metal-binding properties of MS1 are discussed, and its ability to detect environmentally relevant concentrations of Hg(II) is demonstrated.
Nolan
Elizabeth M
EM
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Lippard
Stephen J
SJ
D000473:Alkanes / Q000737:chemistry; D001372:Aza Compounds / Q000737:chemistry; D002413:Cations, Divalent; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008628:Mercury / Q000032:analysis / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013455:Sulfur / Q000737:chemistry; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*
D000473:Alkanes; D001372:Aza Compounds; D002413:Cations, Divalent; D005456:Fluorescent Dyes; D014874:Water Pollutants, Chemical; D014867:Water; D013455:Sulfur; D008628:Mercury; C012867:decane