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Issue 17, 2014
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A green heterogeneous synthesis of N-doped carbon dots and their photoluminescence applications in solid and aqueous states

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Abstract

Compared with traditional semiconductor quantum dots (QDs) and organic dyes, photoluminescent carbon dots (CDs) are superior because of their high aqueous solubility, robust chemical inertness, facile functionalization, high resistance to photobleaching, low toxicity and good biocompatibility. Herein, a green, large-scale and high-output heterogeneous synthesis of N-doped CDs was developed by reacting calcium citrate and urea under microwave irradiation without the use of any capping agents. The obtained N-doped CDs with a uniform size distribution exhibit good aqueous solubility and yellowish-green fluorescence in the solid and aqueous states. These unique luminescence properties of N-doped CDs inspire new thoughts for applications as fluorescent powders, fluorescent inks, the growth of fluorescent bean sprouts, and fingerprint detection tools.

Graphical abstract: A green heterogeneous synthesis of N-doped carbon dots and their photoluminescence applications in solid and aqueous states

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Supplementary files

Article information


Submitted
21 May 2014
Accepted
05 Jul 2014
First published
07 Jul 2014

Nanoscale, 2014,6, 10307-10315
Article type
Paper
Author version available

A green heterogeneous synthesis of N-doped carbon dots and their photoluminescence applications in solid and aqueous states

M. Xu, G. He, Z. Li, F. He, F. Gao, Y. Su, L. Zhang, Z. Yang and Y. Zhang, Nanoscale, 2014, 6, 10307
DOI: 10.1039/C4NR02792B

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