Facile one-step sonochemical synthesis of ultrafine and stable fluorescent C-dots |
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| Institution: | 1. Bar-Ilan Institute for Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel;2. Division of Chemistry, Nuclear Research Center-Negev, Be’er Sheva 84190, Israel;3. Institute of Applied Research, Ben-Gurion University of the Negev, Be’er Sheva 84105, Israel;4. National Cheng Kung University, Department of Materials Science & Engineering, Tainan 70101, Taiwan;1. Sofia University, Faculty of Physics, 5 Boul. J. Bourchier, 1164 Sofia, Bulgaria;2. Sofia University, Faculty of Chemistry, 1 Boul. J. Bourchier, 1164 Sofia, Bulgaria;3. Bulgarian Academy of Sciences, Acad. G. Bonchev, Str., Block 11, Sofia 1113, Bulgaria;1. Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China;2. School of Chemistry and Chemical Engineering, Guangzhou Universtiy, Guangzhou 510006, China;3. State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China;4. The First Affiliated Hospital of Xiamen University, Xiamen University, Xiamen 361005, China;1. Department of Applied Chemistry, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China;2. State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361005, China;3. Xiamen Huaxia University, Xiamen, 361024, China;1. Department of Pharmaceutics, Lovely Institute of Technology (Pharmacy), Lovely Professional University, Phagwara, Punjab 144411, India;2. Department of Quality Assurance, Lovely Institute of Technology (Pharmacy), Lovely Professional University, Phagwara, Punjab 144411, India;3. School of Pharmacy, Department of Pharmaceutical Technology, International Medical University, Jalan Jalil Perkasa 19, Kuala Lumpur 57000, Malaysia;1. China-Australia Joint Research Centre for Functional Molecular Materials, School of Chemical & Material Engineering, Jiangnan University, Wuxi 214122, PR China;2. Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia |
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| Abstract: | 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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| Keywords: | PEG-400 C-dots Fluorescence Sonochemistry Quantum yield |
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