Sculpting carbon bonds for allotropic transformation through solid-state re-engineering of –sp2 carbon

Hyun Young Jung, Paulo T. Araujo, Young Lae Kim, Sung Mi Jung, Xiaoting Jia, Sanghyun Hong, Chi Won Ahn, Jing Kong, Mildred S. Dresselhaus (), Swastik Kar () and Yung Joon Jung ()
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Hyun Young Jung: Northeastern University
Paulo T. Araujo: Massachusetts Institute of Technology
Young Lae Kim: Northeastern University
Sung Mi Jung: Massachusetts Institute of Technology
Xiaoting Jia: Massachusetts Institute of Technology
Sanghyun Hong: Northeastern University
Chi Won Ahn: National Nanofab Center, Korea Advanced Institute of Science and Technology
Jing Kong: Massachusetts Institute of Technology
Mildred S. Dresselhaus: Massachusetts Institute of Technology
Swastik Kar: Northeastern University
Yung Joon Jung: Northeastern University

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract Carbon forms one of nature’s strongest chemical bonds; its allotropes having provided some of the most exciting scientific discoveries in recent times. The possibility of inter-allotropic transformations/hybridization of carbon is hence a topic of immense fundamental and technological interest. Such modifications usually require extreme conditions (high temperature, pressure and/or high-energy irradiations), and are usually not well controlled. Here we demonstrate inter-allotropic transformations/hybridizations of specific types that appear uniformly across large-area carbon networks, using moderate alternating voltage pulses. By controlling the pulse magnitude, small-diameter single-walled carbon nanotubes can be transformed predominantly into larger-diameter single-walled carbon nanotubes, multi-walled carbon nanotubes of different morphologies, multi-layered graphene nanoribbons or structures with sp3 bonds. This re-engineering of carbon bonds evolves via a coalescence-induced reconfiguration of sp2 hybridization, terminates with negligible introduction of defects and demonstrates remarkable reproducibility. This reflects a potential step forward for large-scale engineering of nanocarbon allotropes and their junctions.

Date: 2014
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DOI: 10.1038/ncomms5941

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