Issue 7, 2013
From the journal:

Nanoscale

Chemiluminescence of carbon dots under strong alkaline solutions: a novel insight into carbon dot optical properties†

Lixia Zhao,*a   Fan Di,a   Dabin Wang,a   Liang-Hong Guo,*a   Yu Yang,a   Bin Wana  and  Hui Zhanga  

* Corresponding authors

a State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, P.R. China
E-mail: zlx@rcees.ac.cn, lhguo@rcees.ac.cn
Fax: +86-10-62849685
Tel: +86-10-62849338

Abstract

We report the surprising chemiluminescence (CL) behavior of fluorescent carbon dots in the presence of a strong alkaline solution, such as NaOH or KOH. The CL intensity was dependent on the concentration of the base and carbon dots in a certain range. A possible CL mechanism was studied by UV-Vis, fluorescence, CL, FTIR, XPS and EPR spectroscopy. Radiative recombination of the injected electrons by “chemical reduction” of carbon dots with thermally excited generated holes was proposed, which sheds new light on the characteristics of carbon dots.

Graphical abstract: Chemiluminescence of carbon dots under strong alkaline solutions: a novel insight into carbon dot optical properties

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Article information

DOI
https://doi.org/10.1039/C3NR00358B
Article type
Communication
Submitted
21 Jan 2013
Accepted
08 Feb 2013
First published
12 Feb 2013

Nanoscale, 2013,5, 2655-2658

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Chemiluminescence of carbon dots under strong alkaline solutions: a novel insight into carbon dot optical properties

L. Zhao, F. Di, D. Wang, L. Guo, Y. Yang, B. Wan and H. Zhang, Nanoscale, 2013, 5, 2655 DOI: 10.1039/C3NR00358B

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