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Nitrogen-doped, thiol-functionalized carbon dots for ultrasensitive Hg(II) detection
Abhishek Gupta1, Abhishek Chaudhary, Pooja Mehta
1School of Basic Sciences, Indian Institute of Technology, Mandi, Himachal Pradesh-175001, India. chayan@iitmandi.ac.in.
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.

