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  • Title: One-pot electrochemical synthesis of functionalized fluorescent carbon dots and their selective sensing for mercury ion.
    Author: Hou Y, Lu Q, Deng J, Li H, Zhang Y.
    Journal: Anal Chim Acta; 2015 Mar 25; 866():69-74. PubMed ID: 25732694.
    Abstract:
    We propose a simple, economical, and one-pot method to synthesize water-soluble functionalized fluorescent carbon dots (C-Dots) through electrochemical carbonization of sodium citrate and urea. The as-prepared C-Dots have good photostability and exhibit a high quantum yield of 11.9%. The sizes of the C-Dots are mainly distributed in the range of 1.0-3.5 nm with an average size of 2.4 nm. It has been further used as a novel label-free sensing probe for selective detection of Hg(2+) ions with detection limit as low as 3.3 nM. The detection linear range is 0.01-10 μM. The as-prepared C-Dots are also successfully applied for the determination of Hg(2+) in real water samples.
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