• 文献标题:   One-step preparation of nitrogen-doped graphene quantum dots from oxidized debris of graphene oxide
  • 文献类型:   Article
  • 作  者:   HU CF, LIU YL, YANG YH, CUI JH, HUANG ZR, WANG YL, YANG LF, WANG HB, XIAO Y, RONG JH
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF MATERIALS CHEMISTRY B
  • ISSN:   2050-750X
  • 通讯作者地址:   S China Agr Univ
  • 被引频次:   230
  • DOI:   10.1039/c2tb00189f
  • 出版年:   2013

▎ 摘  要

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.