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Hong L, Takagaki Y, Yoshikawa H, Nakashima N. Efficient Dispersion of “Super-Growth” Single-Walled Carbon Nanotubes Using a Copolymer of Naphathalene Diimide and Poly(dimethylsiloxane). BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20150340] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Liu Hong
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University
| | | | | | - Naotoshi Nakashima
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University
- World Premier International (WPI) Research Center, International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University
- Core Research of Evolutional Science and Technology (CREST), Japan Science and Technology (JST)
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Tanaka H, Arima R, Fukumori M, Tanaka D, Negishi R, Kobayashi Y, Kasai S, Yamada TK, Ogawa T. Method for Controlling Electrical Properties of Single-Layer Graphene Nanoribbons via Adsorbed Planar Molecular Nanoparticles. Sci Rep 2015. [PMID: 26205209 PMCID: PMC4513291 DOI: 10.1038/srep12341] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
A simple method for fabricating single-layer graphene nanoribbons (sGNRs) from double-walled carbon nanotubes (DWNTs) was developed. A sonication treatment was employed to unzip the DWNTs by inducing defects in them through annealing at 500 °C. The unzipped DWNTs yielded double-layered GNRs (dGNRs). Further sonication allowed each dGNR to be unpeeled into two sGNRs. Purification performed using a high-speed centrifuge ensured that more than 99% of the formed GNRs were sGNRs. The changes induced in the electrical properties of the obtained sGNR by the absorption of nanoparticles of planar molecule, naphthalenediimide (NDI), were investigated. The shape of the I-V curve of the sGNRs varied with the number of NDI nanoparticles adsorbed. This was suggestive of the existence of a band gap at the narrow-necked part near the NDI-adsorbing area of the sGNRs.
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Affiliation(s)
- Hirofumi Tanaka
- 1] Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan [2] Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology (Kyutech), 2-1 Hibikino, Wakamatsu, Kitakyushu 808-0196, Japan
| | - Ryo Arima
- Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Minoru Fukumori
- Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Daisuke Tanaka
- Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Ryota Negishi
- Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoshihiro Kobayashi
- Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Seiya Kasai
- Research Center for Integrated Quantum Electronics, Hokkaido University, North 13, West 8, Sapporo 060-8628, Japan
| | - Toyo Kazu Yamada
- Graduate School of Advanced Integration Science, Chiba University, 1-33, Yayoi, Inage, Chiba 263-8522, Japan
| | - Takuji Ogawa
- Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
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Carbon Nanowall Field Effect Transistors Using a Self-Aligned Growth Process. E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY 2014. [DOI: 10.1380/ejssnt.2014.225] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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