• 文献标题:   Synthesis and Selected Properties of Graphene and Graphene Mimics
  • 文献类型:   Review
  • 作  者:   RAO CNR, MATTE HSSR, SUBRAHMANYAM KS
  • 作者关键词:  
  • 出版物名称:   ACCOUNTS OF CHEMICAL RESEARCH
  • ISSN:   0001-4842 EI 1520-4898
  • 通讯作者地址:   Jawaharlal Nehru Ctr Adv Sci Res
  • 被引频次:   53
  • DOI:   10.1021/ar300033m
  • 出版年:   2013

▎ 摘  要

Graphene has generated great excitement in the last few years because of its novel properties with potential applications. Graphene exhibits an ambipolar electric field effect, ballistic conduction of charge carriers, and the quantum Hall effect at room temperature. Some of the other interesting characteristics of graphene include high transparency toward visible light, high elasticity and thermal conductivity, unusual magnetic properties, and charge transfer interactions with molecules. In this Account, we present the highlights of some of our research on the synthesis of graphene and its properties. Since the Isolation and characterization of graphene by micromechanical cleavage from graphite, several strategies have been developed for the synthesis of graphene with either a single or just a few layers. The most significant contribution from our laboratory Is the synthesis of two to four layer graphene by arc-discharge of graphite in a hydrogen atmosphere. Besides providing dean graphene surfaces, this method allows for doping with boron and nitrogen. UV and laser irradiation of graphene oxide provides fairly good graphene samples, and laser unzipping of nanotubes produces graphene nanoribbons. We have exploited Raman spectroscopy to investigate the charge-transfer interactions of graphene with electron-donor and -acceptor molecules, as well as with nanoparticles of noble metals. Graphene quenches the fluorescence of aromatics because of electron transfer or energy transfer. Notable potential applications of the properties of graphene are low turn-on field emission and radiation detection. High-temperature ferromagnetism is another intriguing feature of graphene. Although incorporation of graphene improves the mechanical properties of polymers, its incorporation with nanodiamond or carbon nanotubes exhibits extraordinary synergy. The potential of graphene and its analogues as adsorbents and chemical storage materials for H-2 and CO2 Is noteworthy.