期刊
MATERIALS LETTERS
卷 66, 期 1, 页码 222-224出版社
ELSEVIER
DOI: 10.1016/j.matlet.2011.08.081
关键词
Carbon materials; Nanoparticles; Luminescence; Synthesis; Watermelon peel
资金
- National Natural Science Foundation of China [20975042]
- Program for Academic Pacesetter of Wuhan [200851430484]
- International Science and Technology Cooperation and Exchange Foundation [2008DFA40270]
- Fundamental Research Funds for the Central Universities of China [2010 PY 009, 2009JC005]
- Genetically Modified Major Projects [2009ZX08012-015B]
The synthesis of water-soluble fluorescent carbon dots (C-dots) has received much attention recently. Here, high quality fluorescent C-dots have been synthesized through low-temperature carbonization and simple filtration using watermelon peel, a waste and reproducible raw resource, as a novel carbon resource. This facile approach allows large-scale production of aqueous C-dots dispersions without any post-treatment process. The as-prepared C-dots possess small particle sizes (-2.0 nm), strong blue luminescence, acceptable fluorescence lifetime and good stability in a wide range of pH values (pH 2.0-11.0) and at a high salt concentration. Besides, the obtained C-dots have been successfully applied in live cell imaging, indicating these carbon nanoparticles can serve as high-performance optical imaging probes. (C) 2011 Elsevier B.V. All rights reserved.
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