Nitrogen-doped, thiol-functionalized carbon dots for ultrasensitive Hg(II) detection

Chem Commun (Camb). 2015 Jul 7;51(53):10750-3. doi: 10.1039/c5cc03019f. Epub 2015 Jun 8.

Abstract

Nitrogen-doped, PEGylated carbon dots (C-dots) have been synthesized for the detection of mercury ions (Hg(2+)). The detection limit was found to be 6.8 nM. However, upon functionalization with dithiothreitol (DTT), it reached to as low as 18 pM. The C-dots-Hg(2+) system was also able to efficiently detect biothiols.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbon / chemistry
  • Dithiothreitol / chemistry
  • Ions / chemistry
  • Limit of Detection
  • Mercury / analysis*
  • Microscopy, Atomic Force
  • Nitrogen / chemistry*
  • Polyethylene Glycols / chemistry
  • Quantum Dots / chemistry*
  • Spectrometry, Fluorescence*
  • Sulfhydryl Compounds / chemistry*

Substances

  • Ions
  • Sulfhydryl Compounds
  • Polyethylene Glycols
  • Carbon
  • Mercury
  • Nitrogen
  • Dithiothreitol