Journal
NANOSCALE
Volume 5, Issue 7, Pages 2655-2658Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nr00358b
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Funding
- Ministry of Science and Technology of China [2011CB936001, 2010CB933502]
- National Natural Science Foundation of China [21177138, 20907060, 21077124, 21277158, 21207146]
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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.
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