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Janus graphene from asymmetric two-dimensional chemistry

Author

Listed:
  • Liming Zhang

    (Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University)

  • Jingwen Yu

    (Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University)

  • Mingmei Yang

    (Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University)

  • Qin Xie

    (Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University)

  • Hailin Peng

    (Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University)

  • Zhongfan Liu

    (Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University)

Abstract

Janus materials have distinct surfaces on their opposite faces. Graphene, a two-dimensional giant molecule, provides an excellent candidate to fabricate the thinnest Janus discs and study the asymmetric chemistry of atomic-thick nanomembranes using covalent chemical functionalisation. Here we present the first experimental realisation of nonsymmetrically modified single-layer graphene—Janus graphene—which is fabricated by a two-step surface covalent functionalisation assisted by a poly(methyl methacrylate)-mediated transfer approach. Four types of Janus graphene are produced by co-grafting of halogen and aryl/oxygen-functional groups on each side. Chemical decorations on one side are found to be capable of affecting both chemical reactivity and physical wettability of the opposite side, indicative of communication between the two grafted groups. This novel asymmetric structure provides a platform for theoretical and experimental studies of two-dimensional chemistry and graphene devices with multiple functions.

Suggested Citation

  • Liming Zhang & Jingwen Yu & Mingmei Yang & Qin Xie & Hailin Peng & Zhongfan Liu, 2013. "Janus graphene from asymmetric two-dimensional chemistry," Nature Communications, Nature, vol. 4(1), pages 1-7, June.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2464
    DOI: 10.1038/ncomms2464
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    Cited by:

    1. Li, Yong & Yang, Jie & Song, Jian, 2017. "Structure models and nano energy system design for proton exchange membrane fuel cells in electric energy vehicles," Renewable and Sustainable Energy Reviews, Elsevier, vol. 67(C), pages 160-172.
    2. Li, Yong & Song, Jian & Yang, Jie, 2015. "Graphene models and nano-scale characterization technologies for fuel cell vehicle electrodes," Renewable and Sustainable Energy Reviews, Elsevier, vol. 42(C), pages 66-77.

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