Jump to main content
Jump to site search

Issue 29, 2015
Previous Article Next Article

Controllable and mass fabrication of highly luminescent N-doped carbon dots for bioimaging applications

Author affiliations

Abstract

A facile but effective bottom-up method for the mass preparation of N-doped carbon dots (N–C-dots) was developed by the direct heating of a solid mixture of folic acid (FA) and sodium citrate (SC) for several minutes at 300 °C. The nitrogen content of the resulting N–C-dots could be easily and precisely tuned from 0% to 14% by adjusting the SC to FA mass ratio. Uniform N–C-dots with honeycomb-like ordered structures were obtained, with sizes ranging from 1 to 3 nm in diameter. The N-doping content affected not only the emission quantum yield but also the emission wavelength. The N–C-dots emitted strong blue-green fluorescence based on the excitation wavelength and N-doping content. Because of their excellent water solubility, low toxicity, powerful fluorescence, and high resistance to photobleaching, the N–C-dots can enter various cells and serve as ideal candidates for multicolour cell imaging.

Graphical abstract: Controllable and mass fabrication of highly luminescent N-doped carbon dots for bioimaging applications

Back to tab navigation

Supplementary files

Article information


Submitted
24 Dec 2014
Accepted
12 Feb 2015
First published
13 Feb 2015

RSC Adv., 2015,5, 22343-22349
Article type
Paper
Author version available

Controllable and mass fabrication of highly luminescent N-doped carbon dots for bioimaging applications

Z. Chen, X. Wang, H. Li, C. Li, Q. Lu, G. Yang, J. Long and L. Meng, RSC Adv., 2015, 5, 22343
DOI: 10.1039/C4RA16990E

Social activity

Search articles by author

Spotlight

Advertisements