期刊
ULTRASONICS SONOCHEMISTRY
卷 28, 期 -, 页码 367-375出版社
ELSEVIER
DOI: 10.1016/j.ultsonch.2015.08.005
关键词
PEG-400; C-dots; Fluorescence; Sonochemistry; Quantum yield
This work describes a one-step synthesis of carbon dots (C-dots), which is carried out by sonication of polyethylene glycol (PEG-400) for 0.5-3 h. The effect of the various experimental parameters, such as sonication time, amplitude and temperature on the size and the fluorescence of the C-dots was studied. It was found that the average diameter of the C-dots is between 2 and 9 nm, depending on the preparation conditions. The highest quantum yield of emission was similar to 16%. These high fluorescence properties of the C-dots could be used for bioimaging and for solar cell applications. (C) 2015 Elsevier B.V. All rights reserved.
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