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Issue 46, 2013
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Practical access to bandgap-like N-doped carbon dots with dual emission unzipped from PAN@PMMA core–shell nanoparticles

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Abstract

As emergent nanolights for bioimaging, catalysis, sensors, and photoelectronics, carbon dots (C-dots) have attracted much research attention. However, the practical and scalable preparation of C-dots has been less explored, even after various top-down and bottom-up approaches being reported recently. To this end, we discover a new approach to prepare C-dots by simply unzipping core–shell polymeric nanoparticles, prepared by a microemulsion polymerization. Uniformly distributed N-doped C-dots are prepared by the pyrolysis of PAN@PMMA core–shell nanoparticles at different temperatures, followed by dialysis. TEM analysis shows that many of the C-dots of 2–3 nm size are unzipped from each polymeric particle. All the purified C-dots show a bandgap-like photoluminescence (PL) behaviour, with dual emission and a stable PL between pH 5–12.

Graphical abstract: Practical access to bandgap-like N-doped carbon dots with dual emission unzipped from PAN@PMMA core–shell nanoparticles

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Supplementary files

Article information


Submitted
21 May 2013
Accepted
29 Aug 2013
First published
30 Aug 2013

J. Mater. Chem. C, 2013,1, 7731-7735
Article type
Paper

Practical access to bandgap-like N-doped carbon dots with dual emission unzipped from PAN@PMMA core–shell nanoparticles

Y. Wang, L. Dong, R. Xiong and A. Hu, J. Mater. Chem. C, 2013, 1, 7731
DOI: 10.1039/C3TC30949E

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