کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1266576 | 1496876 | 2016 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Facile one-step sonochemical synthesis of ultrafine and stable fluorescent C-dots Facile one-step sonochemical synthesis of ultrafine and stable fluorescent C-dots](/preview/png/1266576.png)
• One-step sonochemical method for the synthesis of high flourescent C-dots (QY ∼16%).
• The collapsing bubbles provide extreme, transient conditions for the formation of C-dots.
• Parametrization has led enhancement of the amount of C-dots formations.
• The synthesized C-dots have been deposited on a polyethylene film.
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 ∼16%. These high fluorescence properties of the C-dots could be used for bioimaging and for solar cell applications.
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Journal: Ultrasonics Sonochemistry - Volume 28, January 2016, Pages 367–375