One-step preparation of nitrogen-doped graphenequantum dots from oxidized debris of graphene oxide

✍ Scribed by Hu, Chaofan ;Liu, Yingliang ;Yang, Yunhua ;Cui, Jianghu ;Huang, Zirong ;Wang, Yaling ;Yang, Lufeng ;Wang, Haibo ;Xiao, Yong ;Rong, Jianhua

• Book ID: 120238248
• Publisher: The Royal Society of Chemistry
• Year: 2013
• Tongue: English
• Weight: 340 KB
• Volume: 1
• Category: Article
• ISSN: 2050-750X
• DOI: 10.1039/C2TB00189F

✦ Synopsis

Highly blue-luminescent nitrogen-doped graphene quantum dots (N-GQDs) are obtained by hydrothermal treatment of graphene oxide in the presence of ammonia. The yield of N-GQDs is about 8.7% in weight. A high quantum yield of maximum 24.6% at an excitation wavelength of 340 nm is achieved. They are applied for bioimaging of HeLa cells, and showed bright luminescence and excellent biocompatibility.