Growth of carbon nanotubes via twisted graphene nanoribbons

Hong En Lim, Yasumitsu Miyata, Ryo Kitaura, Yoshifumi Nishimura, Yoshio Nishimoto, Stephan Irle, Jamie H. Warner, Hiromichi Kataura and Hisanori Shinohara ()
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Hong En Lim: Nagoya University
Yasumitsu Miyata: Nagoya University
Ryo Kitaura: Nagoya University
Yoshifumi Nishimura: Nagoya University
Yoshio Nishimoto: Nagoya University
Stephan Irle: Nagoya University
Jamie H. Warner: University of Oxford
Hiromichi Kataura: Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology
Hisanori Shinohara: Nagoya University

Nature Communications, 2013, vol. 4, issue 1, 1-7

Abstract: Abstract Carbon nanotubes have long been described as rolled-up graphene sheets. It is only fairly recently observed that longitudinal cleavage of carbon nanotubes, using chemical, catalytical and electrical approaches, unzips them into thin graphene strips of various widths, the so-called graphene nanoribbons. In contrast, rolling up these flimsy ribbons into tubes in a real experiment has not been possible. Theoretical studies conducted by Kit et al. recently demonstrated the tube formation through twisting of graphene nanoribbon, an idea very different from the rolling-up postulation. Here we report the first experimental evidence of a thermally induced self-intertwining of graphene nanoribbons for the preferential synthesis of (7, 2) and (8, 1) tubes within parent-tube templates. Through the tailoring of ribbon’s width and edge, the present finding adds a radically new aspect to the understanding of carbon nanotube formation, shedding much light on not only the future chirality tuning, but also contemporary nanomaterials engineering.

Date: 2013
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DOI: 10.1038/ncomms3548

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