Jump to main content
Jump to site search


Nitrogen-doped carbon dots for the detection of mercury ions in living cells and visualization of latent fingerprints

Author affiliations

Abstract

Nitrogen-doped carbon dots (NCDs) were synthesised using a simple and straightforward solvothermal method. The resulting spherical NCDs showed stable fluorescence and a prominent fluorescence quantum yield (67%) with an average size of 3.52 nm. The fluorescence of the NCDs was quenched effectively by mercury ions (Hg2+), exhibiting a detection limit of 0.65 μM. Upon addition of a saturated solution of ethylenediaminetetraacetic acid to a dispersion of the NCDs/Hg2+ complex, the fluorescence of the NCDs underwent significant immediate recovery. Due to their favorable biocompatibility, NCDs were also demonstrated to be efficient for HeLa cell imaging. The detection of Hg2+ by NCDs could be realized in environmental water samples and living cells, with excellent results. Moreover, the as-synthesized fluorescent NCD nanopowders were used for visualizating latent fingerprints (LFPs) with significant third level detail.

Graphical abstract: Nitrogen-doped carbon dots for the detection of mercury ions in living cells and visualization of latent fingerprints

Back to tab navigation

Supplementary files

Publication details

The article was received on 29 Dec 2017, accepted on 20 Mar 2018 and first published on 21 Mar 2018


Article type: Paper
DOI: 10.1039/C7NJ05170K
Citation: New J. Chem., 2018, Advance Article
  •   Request permissions

    Nitrogen-doped carbon dots for the detection of mercury ions in living cells and visualization of latent fingerprints

    G. Ren, Y. Meng, Q. Zhang, M. Tang, B. Zhu, F. Chai, C. Wang and Z. Su, New J. Chem., 2018, Advance Article , DOI: 10.1039/C7NJ05170K

Search articles by author

Spotlight

Advertisements