Jump to main content
Jump to site search

Issue 10, 2015
Previous Article Next Article

One-pot synthesis of carbon nanodots for fluorescence turn-on detection of Ag+ based on the Ag+-induced enhancement of fluorescence

Author affiliations

Abstract

Carbon quantum dots (C-dots) are promising fluorescence probes for applications in metal ion detection, biosensing and bioimaging and so on. In this study, water soluble carbon nanodots were synthesized through a simple one-step heat treatment of ethylene glycol solution. In the present preparation, the C-dots may be formed through the hydration, crosslinking and carbonization processes. The synthesized C-dots show a green luminescent emission under ultraviolet excitation, which can be used for the detection of Ag+ ions. Interestingly, in a different way to the usual quenching effects of metal ions on the fluorescence of C-dots, Ag+ exhibited an enhancement effect on the photoluminescence of C-dots, which can be attributed to the reduction of Ag+ to silver nanoclusters (Ag0) on the surface of the C-dots. Based on the linear relationship between fluorescence intensity and concentration of Ag+ ions, the prepared C-dots can be used for sensitive and selective detection of silver ions in environmental water with a limit of detection of 320 nM and a linear range of 0–90 μM.

Graphical abstract: One-pot synthesis of carbon nanodots for fluorescence turn-on detection of Ag+ based on the Ag+-induced enhancement of fluorescence

Back to tab navigation

Supplementary files

Publication details

The article was received on 12 Nov 2014, accepted on 16 Jan 2015 and first published on 20 Jan 2015


Article type: Paper
DOI: 10.1039/C4TC02582B
Author version
available:
Download author version (PDF)
Citation: J. Mater. Chem. C, 2015,3, 2302-2309
  •   Request permissions

    One-pot synthesis of carbon nanodots for fluorescence turn-on detection of Ag+ based on the Ag+-induced enhancement of fluorescence

    X. Gao, Y. Lu, R. Zhang, S. He, J. Ju, M. Liu, L. Li and W. Chen, J. Mater. Chem. C, 2015, 3, 2302
    DOI: 10.1039/C4TC02582B

Search articles by author

Spotlight

Advertisements