期刊
AUSTRALIAN JOURNAL OF CHEMISTRY
卷 69, 期 3, 页码 357-360出版社
CSIRO PUBLISHING
DOI: 10.1071/CH15431
关键词
-
资金
- Shanghai Chenguang Project [11CGB07]
- Australian Research Council [DP110102569]
Strong green-luminescent nitrogen-doped multi-layer graphene quantum dots (N-GQDs) have been prepared via a microwave-assisted hydrothermal method using glucose and urea as the starting materials. The fabricated N-GQDs show a highly crystalline structure and consist of similar to 3-10 graphene layers with an N/C atomic ratio 5.7 %. The wavelength-dependent luminescence emission behaviour is observed with a photoluminescence quantum yield of 5.2 %. The combination of the unique optical properties introduced by nitrogen doping with the high solubility in aqueous medium offered by the surface oxygen-rich functional groups in N-GQDs provides additional advantages for their potential applications in biolabelling and bioimaging.
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