• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Localized electronic states of defect structures in graphene

Research Project

Project/Area Number 17K04971
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Nanostructural chemistry
Research InstitutionTokyo Institute of Technology

Principal Investigator

Fujii Shintaro  東京工業大学, 理学院, 特任准教授 (70422558)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsナノグラフェン / 電子輸送 / プローブ顕微鏡 / ブレイクジャンクション / 走査型トンネル顕微鏡 / ブレイクジャンクション法 / 電気伝導度 / グラフェン / グラフェンナノリボン / 欠陥 / 電子状態
Outline of Final Research Achievements

Graphene nanoribbons with zigzag edges at both ends were synthesized by a bottom-up method using the surface polymerization reaction of an acene precursor. From the statistical analysis of single molecule conductivity measurement, it was found that graphene nanoribbons with molecular length of several nanometers show high electrical conductivity (>0.1 G0, G0= 2e^2/h). Moreover, theoretical calculations were performed for graphene nanoribbons with a molecular length of several nanometers. The single-molecule electrical conductivity of graphene nanoribbons can be remarkably tuned due to the localized spin interaction at the zigzag edges of the graphene nanoribbons, and the magnitude of the localized spin interaction changes depending on the length of the graphene nanoribbons.

Academic Significance and Societal Importance of the Research Achievements

本研究では、これまで実験的な検証が難しかった、欠陥構造の単離と構造同定に正面からら取り組むことで、グラフェンの化学活性の源である局在スピン状態を明らかにした。グラフェンナノ構造を表面に単離することで初めて、高活性な局在スピンを有するグラフェンの物性評価に成功した。本研究の成果は、これまでにないグラフェンエッジ構造に現れる局在スピン状態を利用し電子材料への展開に加え、化学活性、そして水素発生電極材料、酸素還元電極材料としての触媒機能や水素吸蔵機能、炭素磁気機能の開発に寄与するものである。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (29 results)

All 2020 2019 2018 2017

All Journal Article (19 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 19 results,  Open Access: 7 results,  Acknowledgement Compliant: 1 results) Presentation (10 results) (of which Int'l Joint Research: 5 results,  Invited: 4 results)

  • [Journal Article] Hybrid Molecular Junctions Using Au-S and Au-π Bindings2020

    • Author(s)
      S. Fujii, M. Iwane, S. Furukawa, T. Tada, T. Nishino, M. Saito, M. Kiguchi
    • Journal Title

      J. Phys. Chem. C

      Volume: 124 Issue: 17 Pages: 9261-9268

    • DOI

      10.1021/acs.jpcc.9b11725

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Selective formation of molecular junctions with high and low conductance states by tuning the velocity of electrode displacement2020

    • Author(s)
      Isshiki Yuji、Fujii Shintaro、Nishino Tomoaki、Kiguchi Manabu
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 22 Issue: 8 Pages: 4544-4548

    • DOI

      10.1039/c9cp06487g

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Electric-Field-Controllable Conductance Switching of an Overcrowded Ethylene Self-Assembled Monolayer2019

    • Author(s)
      Fujii Shintaro、Koike Masato、Nishino Tomoaki、Shoji Yoshiaki、Suzuki Takanori、Fukushima Takanori、Kiguchi Manabu
    • Journal Title

      Journal of the American Chemical Society

      Volume: 141 Issue: 46 Pages: 18544-18550

    • DOI

      10.1021/jacs.9b09233

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tuneable Single-Molecule Electronic Conductance of C60 by Encapsulation2019

    • Author(s)
      S. Fujii, H. Cho, Y. Hashikawa, T. Nishino, Y. Murata, M. Kiguchi
    • Journal Title

      Phys. Chem. Chem. Phys.

      Volume: 21 Issue: 23 Pages: 12606-12610

    • DOI

      10.1039/c9cp02469g

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Identifying the Molecular Adsorption Site of a Single Molecule Junction Through Combined Raman and Conductance Studies2019

    • Author(s)
      S. Kaneko, E. Montes, S. Suzuki, S. Fujii, T. Nishino, K. Tsukagoshi, K. Ikeda, H. Kano, H. Nakamura, H. Vazquez, M. Kiguchi
    • Journal Title

      Chem. Sci.

      Volume: 10 Issue: 25 Pages: 6261-6269

    • DOI

      10.1039/c9sc00701f

    • NAID

      120007133390

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Investigation of Ag and Cu Filament Formation inside the Metal Sulfide Layer of an Atomic switch based on Point Contact Spectroscopy2019

    • Author(s)
      A. Aiba, R. Koizumi, T. Tsuruoka, K. Terabe, K. Tsukagoshi, S. Kaneko, S. Fujii, T. Nishino, M. Kiguchi
    • Journal Title

      ACS Appl. Mater. Inter.

      Volume: 11 Issue: 30 Pages: 27178-27182

    • DOI

      10.1021/acsami.9b05523

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Control of Molecular Orientation in Single-Molecule Junction with Tripodal Triptycene Anchoring Unit: Toward Simple and Facile Single-Molecule Diode2019

    • Author(s)
      S. Fujii, F. Ishiwari, Y. Komoto, L. Su ,Y. Yuto , Y. Yamagata, A. Kosaka, A. Aiba, T. Nishino, T. Fukushima, M. Kiguchi
    • Journal Title

      Jpn. J. Appl. Phys.

      Volume: 58 Issue: 3 Pages: 35003-35003

    • DOI

      10.7567/1347-4065/ab0436

    • NAID

      210000135468

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Controlling Stacking Order and Charge Transport in pi-Stacks of Aromatic Molecules Based on Surface Assembly2018

    • Author(s)
      M. Iwane, T. Tada, T. Osuga, T. Murase, M. Fujita, T. Nishino, M. Kiguchi, S. Fujii
    • Journal Title

      Chem. Commun.

      Volume: 54 Issue: 88 Pages: 12443-12446

    • DOI

      10.1039/c8cc06430j

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ruthenium Tris-bipyridine Single-Molecule Junctions with Multiple Joint Configurations2018

    • Author(s)
      Komoto Yuuki、Yamazaki Yasuomi、Tamaki Yusuke、Iwane Madoka、Nishino Tomoaki、Ishitani Osamu、Kiguchi Manabu、Fujii Shintaro
    • Journal Title

      Chemistry - An Asian Journal

      Volume: - Issue: 10 Pages: 1297-1301

    • DOI

      10.1002/asia.201800166

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Fluctuation in Interface and Electronic Structure of Single-Molecule Junctions Investigated by Current versus Bias Voltage Characteristics2018

    • Author(s)
      Isshiki Yuji、Fujii Shintaro、Nishino Tomoaki、Kiguchi Manabu
    • Journal Title

      Journal of the American Chemical Society

      Volume: 140 Issue: 10 Pages: 3760-3767

    • DOI

      10.1021/jacs.7b13694

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Impact of junction formation process on single molecular conductance2018

    • Author(s)
      Y. Isshiki, S. Fujii*, T. Nishino, M. Kiguchi*
    • Journal Title

      Phys. Chem. Chem. Phys.

      Volume: 20 Issue: 12 Pages: 7947-7952

    • DOI

      10.1039/c8cp00317c

    • NAID

      130008146731

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Investigation on Single-Molecule Junction Based on Current-Voltage Characteristics2018

    • Author(s)
      Y. Isshiki, Y. Matsuzawa, S. Fujii*, M. Kiguchi*
    • Journal Title

      Micromachines

      Volume: 9 Issue: 2 Pages: 67-67

    • DOI

      10.3390/mi9020067

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Single-molecule junction of pi-molecule2018

    • Author(s)
      Y. Komoto, S. Fujii, M. Kiguchi
    • Journal Title

      Mater. Chem. Front.

      Volume: 2 Issue: 2 Pages: 214-218

    • DOI

      10.1039/c7qm00459a

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Single-molecule junction of an overcrowded ethylene with binary conductance states2018

    • Author(s)
      M. Koike, S. Fujii*, H. Cho, Y. Shoji, T. Nishino, T. Fukushima*, M. Kiguchi*
    • Journal Title

      Jpn. J. Appl. Phys.

      Volume: 57 Issue: 3S2 Pages: 03EG05-03EG05

    • DOI

      10.7567/jjap.57.03eg05

    • NAID

      210000148759

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Surface Enhanced Raman Scattering in Molecular Junctions2017

    • Author(s)
      M. Iwane, S. Fujii, M. Kiguchi
    • Journal Title

      Sensors

      Volume: 17 Issue: 8 Pages: 1901-1901

    • DOI

      10.3390/s17081901

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Highly-conducting molecular circuits based on antiaromaticity2017

    • Author(s)
      S. Fujii*, S. Marques-Gonzalez, J. Shin, H. Shinokubo*, T. Masuda, T. Nishino, N. P. Arasu, H. Vazquez*, M. Kiguchi*
    • Journal Title

      Nat. Comm.

      Volume: 8 Issue: 1 Pages: 15984-15984

    • DOI

      10.1038/ncomms15984

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Molecular diode studies based on a highly sensitive measurement technique2017

    • Author(s)
      M. Iwane, S. Fujii, M. Kiguchi
    • Journal Title

      Sensors

      Volume: 17 Issue: 5 Pages: 956-956

    • DOI

      10.3390/s17050956

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Statistical I-V measurements of single-molecule junctions with an asymmetric anchoring group, 1,4-aminobenzenethiol2017

    • Author(s)
      Y. Komoto, S. Fujii, M. Kiguchi
    • Journal Title

      Adv. Nat. Sci.: Nanosci. Nanotechnol.

      Volume: 8 Issue: 2 Pages: 25007-25007

    • DOI

      10.1088/2043-6254/aa5e24

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of Electronic Structure of the Single-molecule Junction Based on Current-Voltage Measurement and Thermopower Measurement-Application to C60 Single-molecule Junction2017

    • Author(s)
      Y. Komoto, Y. Isshiki, S. Fujii, T. Nishino, M. Kiguchi
    • Journal Title

      Chem. Asian J.

      Volume: 12 Issue: 4 Pages: 440-445

    • DOI

      10.1002/asia.201601392

    • NAID

      130006710283

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] ナノグラフェンの電子状態と伝導特性2019

    • Author(s)
      藤井慎太郎, 木口学
    • Organizer
      日本化学会第99春季年会 甲南大学(岡本キャンパス)
    • Related Report
      2019 Annual Research Report
  • [Presentation] Charge Transport though Individual Graphene Nanoribbons2019

    • Author(s)
      S. Fujii, M. Kiguchi
    • Organizer
      21st IVC Conference (IVC-21) Malmo, Sweden
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Single-Molecule Charge Transport Study on Nanocarbon Materials2019

    • Author(s)
      S. Fujii
    • Organizer
      nternational Symposium on Molecular Science 2019 Tokyo
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 単分子の伝導特性と機能性2019

    • Author(s)
      藤井慎太郎
    • Organizer
      2019年電子情報通信学会総合大会 早稲田大学(西早稲田キャンパス)
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] ナノグラフェンの電子状態と伝導特性2019

    • Author(s)
      藤井慎太郎, 木口学
    • Organizer
      日本化学会第99春季年会
    • Related Report
      2018 Research-status Report
  • [Presentation] Single-Molecule Study on Nanocarbon Materials2018

    • Author(s)
      Shintaro Fujii
    • Organizer
      pacsurf2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Charge transport properties of mechanochromic single-molecule junctions2018

    • Author(s)
      Shintaro Fujii, Masato Koike, Manabu Kiguchi, Yoshiaki Shoji, Takanori Fukushima
    • Organizer
      ECOSS34
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] ナノグラフェンの単分子計測2018

    • Author(s)
      藤井慎太郎
    • Organizer
      日本化学会新領域ナノスケール分子デバイス「第7回若手セミナー」大阪2018/01/27
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] グラフェンナノリボンの輸送特性2018

    • Author(s)
      藤井慎太郎, 木口学
    • Organizer
      日本化学会第98春季年会 船橋, 日本大学理学部 船橋キャンパス 2018/3/23
    • Related Report
      2017 Research-status Report
  • [Presentation] Single-Molecule Electronic Study on Nanographene2017

    • Author(s)
      Shintaro Fujii, Manabu Kiguchi
    • Organizer
      ECOSS33 Szeged (Hungary) 2017/8/29
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi