On-surface synthesis of magnetic graphene nanoribbons

2019 Fiscal Year Final Research Report

• 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
• Keywords: ナノ材料

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.

Free Research Field

ナノ科学

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。