On-surface synthesis of magnetic graphene nanoribbons

• Project/Area Number: 18K19002
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 28:Nano/micro science and related fields
• Research Institution: Kyoto University
• Principal Investigator: Sakaguchi Hiroshi 京都大学, エネルギー理工学研究所, 教授 (30211931)
• Project Period (FY): 2018-06-29 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000); Fiscal Year 2019: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: ナノ材料 / 表面科学 / キラル科学

Outline of Final Research Achievements

Asymmetrical z-bar linkage precursor was organically synthesized aiming at ferromagnetic graphene nanoribbons. We tried to fabricate GNRs using our developed two-zone chemical vapor deposition method. Although expected GNRs were not produced, two-dimensional organized structures were observed. Annealing process over 400 degrees is the reason to produce such structures due to intermolecular coupling of GNRs via decomposition of functional groups. These results will provide a useful knowledge to fulfill out goal.

Academic Significance and Societal Importance of the Research Achievements

従来の対称型ジグザグエッジGNRで予測される鎖内エッジ間でのスピンの相殺の問題を克服するため、片側エッジのみにジグザグ構造を持つ新しい非対称型GNR構造を提案した。この構造を実現するために、非対称Z型前駆体分子を設計し、我々が世界に先駆けて見出した“生物模倣触媒作用” （H. Sakaguchi, et al., Nat. Chem., 9, 57 2017）を利用した、強磁性を有する非対称型ジグザグエッジGNRの提案を行った。

Research Products

• [Journal Article] Fabrication and photocatalytic behavior of titanium oxide-gold nanoparticles composite ultrathin films prepared using surface sol-gel process (2020)
  • Author(s): S. Mitsukawa, T. Akiyama, M. Hinoue, K. Shima, T. Takishita, S. Higashida, N. Koyama, K. Sugawa, M. Ogawa, H. Sakaguchi, T. Oku
  • Journal Title: Journal of Sol-Gel Science and Technology Volume: 93(3) Issue: 3 Pages: 563-569
  • DOI: 10.1007/s10971-019-05214-w
  • Peer Reviewed
• [Journal Article] Bio-inspired Surface Catalysis to Produce Graphene Nanoribbons (2019)
  • Author(s): 小島崇寛，Xu Zhen，坂口浩司
  • Journal Title: Journal of Synthetic Organic Chemistry, Japan Volume: 77 Issue: 6 Pages: 576-583
  • DOI: 10.5059/yukigoseikyokaishi.77.576
  • NAID: 130007662283
  • ISSN: 0037-9980, 1883-6526
  • Year and Date: 2019-06-01
  • Peer Reviewed
• [Journal Article] Bottom‐Up On‐Surface Synthesis of Two‐Dimensional Graphene Nanoribbon Networks and Their Thermoelectric Properties (2019)
  • Author(s): T. Kojima, T. Nakae, Z. Xu, C. Saravanan, K. Watanabe, Y. Nakamura, H. Sakaguchi
  • Journal Title: Chemistry - An Asian Journal Volume: 14(22) Issue: 23 Pages: 4400-4407
  • DOI: 10.1002/asia.201901328
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Effect of silver nanoplate on singlet exciton fission in rubrene polymer-composite films (2019)
  • Author(s): H. Yonemura, D. Aira, N. Asakura, K. Ezoe, H. Sakaguchi
  • Journal Title: Japanese Journal of Applied Physics Volume: 59 Issue: SD Pages: SDDB03-SDDB03
  • DOI: 10.7567/1347-4065/ab51cc
  • NAID: 210000157451
  • Peer Reviewed
• [Journal Article] Synergetic effect of silver nanoplate and magnetic field on photon upconversion based on sensitized triplet-triplet annihilation in polymer system (2019)
  • Author(s): Y. Noda, F. Shibata, S. Fukuda, G.S. Y. Lee, H. Sakaguchi, H. Yonemura
  • Journal Title: Japanese Journal of Applied Physics Volume: 59 Issue: SD Pages: SDDB04-SDDB04
  • DOI: 10.7567/1347-4065/ab515b
  • NAID: 210000157433
  • Peer Reviewed
• [Journal Article] Electrostatic Repulsion-Induced Desorption of Dendritic Viologen-Arranged Molecules Anchored on a Gold Surface through a Gold-Thiolate Bond Leading to a Tunable Molecular Template (2018)
  • Author(s): Takehiro Kawauchi, Takahiro Kojima, Hiroshi Sakaguchi, Tomokazu Iyoda
  • Journal Title: Langmuir Volume: 34 Issue: 22 Pages: 6420-6427
  • DOI: 10.1021/acs.langmuir.8b00858
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] (Poly)terephthalates with Efficient Blue Emission in the Solid State (2018)
  • Author(s): M. Shimizu, R. Shigitani, T. Kinoshita, H. Sakaguchi
  • Journal Title: Chemistry - An Asian Journal Volume: - Issue: 10 Pages: 1792-1800
  • DOI: 10.1002/asia.201801619
  • Peer Reviewed
• [Presentation] 生物類似表面触媒作用を用いるナノ炭素細線の合成 (2019)
  • Author(s): 坂口浩司
  • Organizer: 2019年度分子研研究会「単分子有機化学の挑戦」
  • Invited
• [Presentation] Nature-Inspired On-Surface Synthesis of Graphene Nanoribbons (2019)
  • Author(s): S. Nobusue, H. Sakaguchi
  • Organizer: International Congress on Pure & Applied Chemistry Yangon (ICPAC Yangon) 2019
  • Int'l Joint Research / Invited
• [Presentation] 生物類似表面触媒作用を用いるナノ炭素細線の合成 (2019)
  • Author(s): 坂口浩司
  • Organizer: 第46回炭素材料学会年会
  • Invited
• [Presentation] Preparation of Interchain-linked 2D Graphene Nanoribbons with Dibenzo[g,p]chrysene by Two-Zone Chemical Vapor Deposition (2019)
  • Author(s): Z. Pei, Z. Xu, K. Kaushik, S. Nobusue, T. Kojima, H. Sakaguchi
  • Organizer: 日本化学会第99春季年会
• [Presentation] On-surface synthesis of graphene clusters from a quaterphenylbranched Z-bar-linkage precursor (2019)
  • Author(s): Z. Xu, Z. Pei, K. Kaushik, T. Kojima, S. Nobusue, H. Sakaguchi
  • Organizer: 日本化学会第99春季年会
• [Presentation] Biomimetic On-surface Growth of Graphene Nanoribbons (2018)
  • Author(s): H. Sakaguchi
  • Organizer: CIMTEC 2018(8th Forum on New Materials)
  • Int'l Joint Research / Invited
• [Presentation] 新規Z型前駆体モノマーを用いたナノ炭素材料の表面合成 (2018)
  • Author(s): 小島崇寛, Xu Zhen, 坂口浩司
  • Organizer: 第29回基礎有機化学討論会
• [Presentation] Biomimetic surface reaction toward Graphene Nanoribbons (2018)
  • Author(s): T. Kojima, Z. Xu, H. Sakaguchi
  • Organizer: International Congress on Pure & Applied Chemistry Langkawi 2018（ICPAC Langkawi2018）
  • Int'l Joint Research / Invited
• [Presentation] 生物模倣触媒作用を用いるグラフェンナノリボンの表面合成 (2018)
  • Author(s): 坂口浩司
  • Organizer: 2018年日本表面真空学会学術講演会
  • Invited
• [Presentation] Bio-inspired on-surface fabrication of graphene nanoribbons (2018)
  • Author(s): H. Sakaguchi
  • Organizer: Nano-Micro Conference 2018
  • Int'l Joint Research / Invited
• [Presentation] Nature-inspired on-surface synthesis of graphene nanoribbons (2018)
  • Author(s): S. Nobusue, H. Sakaguchi
  • Organizer: Energy Materials and Nanotechnology (EMN AUCKLAND MEETING 2018)
  • Int'l Joint Research