Controllable size-selective method to prepare graphene quantum dots from graphene oxide

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• 作者：Tianju Fan (1)
  Wenjin Zeng (1)
  Wei Tang (1)
  Chunqiu Yuan (1)
  Songzhao Tong (1)
  Kaiyu Cai (1)
  Yidong Liu (2)
  Wei Huang (1) (2)
  Yong Min (1) (3)
  Arthur J Epstein (3)
  
  1. Institute of Advanced Materials ; Nanjing University of Posts and Telecommunications ; 9 Wenyuan Road ; Nanjing ; Jiangsu ; 210046 ; China
  2. State Key Laboratory of Organic Electronics and Information Displays and Fountain Global Photoelectric Technology Co. Ltd ; 2 Xinyue Road ; Yancheng ; Jiangsu ; 224000 ; China
  3. Department of Physics and Chemistry & Biochemistry ; The Ohio State University ; Columbus ; OH ; 43210 ; USA
  
• 关键词：Graphene oxide ; Graphene quantum dots ; Chemical cutting ; Fluorescence mechanism ; 81.07.Ta (fabrication of quantum dots) ; 68.65.Hb (structure and nonelectronic properties of quantum dots) ; 61.48.Gh (graphene structure)
• 刊名：Nanoscale Research Letters
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：10
• 期：1
• 全文大小：2,767 KB
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• 刊物主题：Nanotechnology; Nanotechnology and Microengineering; Nanoscale Science and Technology; Nanochemistry; Molecular Medicine;
• 出版者：Springer US
• ISSN：1556-276X

文摘

We demonstrated one-step method to fabricate two different sizes of graphene quantum dots (GQDs) through chemical cutting from graphene oxide (GO), which had many advantages in terms of simple process, low cost, and large scale in manufacturing with higher production yield comparing to the reported methods. Several analytical methods were employed to characterize the composition and morphology of the resultants. Bright blue luminescent GQDs were obtained with a produced yield as high as 34.8%. Moreover, how the different sizes affect fluorescence wavelength mechanism was investigated in details.