期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 22, 期 15, 页码 7461-7467出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm16835a
关键词
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资金
- NSFC [20773015, 81173139, 21073018]
- Beijing Municipal Commission of Education
- Fundamental Research Funds for the Central University
- National Key Technology RD Program [2008BAI49B04]
- RGC of Hong Kong (GRF) [604608]
We present a facile electrochemical method for synthesizing uniform sized graphene quantum dots (GQDs) with a strong yellow emission at 14% quantum yield. This approach has enabled a large-scale production of aqueous GQD solution without the need for polymeric or surfactant stabilizers. The structure and emission mechanism of the GQDs have been studied by combining extensive characterization techniques, rigorous control experiments and theoretical calculations. We further demonstrate the distinctive advantages of such GQDs for direct and efficient stem cell labeling, opening up great opportunities for their bio-medical applications.
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