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Understanding of transitions between excited states across neighboring nanostructures by using a technique of STM-induced light emission

Research Project

Project/Area Number 16K04988
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Optical engineering, Photon science
Research InstitutionNational Institute for Materials Science

Principal Investigator

SAKURAI Makoto  国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, 主幹研究員 (60280731)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords低次元磁性 / 分子磁性 / 磁気フラストレーション / スピングラス / 有機金属錯体 / 表面化学反応 / 表面を介した相互作用 / 酸化グラフェンシート / 表面磁性 / 電荷移動 / 自己組織化 / 2次元磁性 / スローダイナミクス / 分子スピン / ナノドット / スピン相関 / ナノシート / 自己組織 / 緩和 / 結晶成長 / 分子クラスター / スピン / 走査型トンネル顕微鏡 / 表面・界面物性 / 走査プローブ顕微鏡 / ナノ材料 / 応用光学・量子光工学 / 光物性
Outline of Final Research Achievements

We have developed self-organized fabrication of molecular nanoclusters on a graphene oxide (GO) surface through on-surface chemical reaction. Here the nanoclusters grow from tiny nucleus formed by a molecule bonding to the GO sheet through peptide coupling between amino group of the molecule and carboxyl group of the sheet. Each molecule forming the nanocluster with a diameter of about 2 nm has an individual spin due to charge transfer between the molecule and sheet. As the interspacing between the nanoclusters on the GO surface decreases, the magnetism of the nanoclusters changes gradually from paramagnetism to collective one as a result of the interaction between inter-cluster spins. Present study paves the way for new molecular magnetism controlled by the interconnection between molecular nanoclusters through on-surface chemistry.

Academic Significance and Societal Importance of the Research Achievements

本研究は、ゆらぎと磁気的秩序が競合する低次元磁性の分野で、新しいプラットフォームを作成する技術の提供と、分子ナノ構造体間の磁気相互作用を介して変化する2次元分子磁性の理解を深めることにより科学の進展に貢献した。化学、物理、材料科学の分野に大きな足跡を残す研究であり、学術的な意味がある。さらに表面化学反応を利用して自己組織的にナノ構造体を作成する手法は、化学修飾した機能的ナノシートの作製法であり、今後の応用が期待できる。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (10 results)

All 2019 2018 2017

All Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results) Presentation (4 results) Book (2 results)

  • [Journal Article] Reversible manipulation of lattice defects in single-crystal SnO2 microrod by applying mechanical stress and voltage2019

    • Author(s)
      Makoto Sakurai, Kewei Liu, Masakazu Aono.
    • Journal Title

      Journal of Applied Physics

      Volume: 125 Issue: 8 Pages: 082512-082512

    • DOI

      10.1063/1.5053837

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Tunable Magnetism of Organometallic Nanoclusters by Graphene Oxide On-Surface Chemistry2019

    • Author(s)
      Makoto Sakurai, Pradyot Koley, Masakazu Aono
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 50433-50433

    • DOI

      10.1038/s41598-019-50433-4

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Morphological Change of Molecular Assemblies through On-Surface Chemical Reaction2019

    • Author(s)
      Makoto Sakurai, Pradyot Koley, Masakazu Aono
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 123 Issue: 49 Pages: 29679-29685

    • DOI

      10.1021/acs.jpcc.9b08011

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Photon Emission from the Scanning Tunneling Microscope2018

    • Author(s)
      Makoto Sakurai
    • Journal Title

      Compendium of Surface and Interface Analysis

      Volume: 78 Pages: 477-485

    • DOI

      10.1007/978-981-10-6156-1_78

    • ISBN
      9789811061554, 9789811061561
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 表面分子スピン複雑系のダイナミクス2019

    • Author(s)
      櫻井 亮, クリ プラドド, 青野 正和.
    • Organizer
      日本物理学会 第74回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Control of peptide self-assembly2019

    • Author(s)
      SAKURAI, Makoto, P. Koley, AONO, Masakazu
    • Organizer
      32nd International Microprocesses and Nanotechnology Conference (MNC 2019)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 表面分子スピン複雑系のダイナミクス2019

    • Author(s)
      櫻井亮、P.Koley、青野正和
    • Organizer
      日本物理学会年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 有機金属錯体ナノクラスターの分子磁性2018

    • Author(s)
      櫻井亮、P. Koley、青野正和
    • Organizer
      日本物理学会秋季大会
    • Related Report
      2018 Research-status Report
  • [Book] Compendium of Surface and Interface Analysis2018

    • Author(s)
      Makoto Sakurai
    • Total Pages
      9
    • Publisher
      Springer
    • Related Report
      2017 Research-status Report
  • [Book] ”Compendium of Surface and Interface Analysis”の ”Photon emission from the scanning tunneling microscope”2017

    • Author(s)
      表面科学会編
    • Total Pages
      1000
    • Publisher
      Springer
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2021-02-19  

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