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2008 Fiscal Year Final Research Report

Conductivity measurement of single molecule using self-assembled monolayer formed onvarious electrode surfaces

Research Project

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Project/Area Number 19750102
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Functional materials chemistry
Research InstitutionHokkaido University

Principal Investigator

TAKAKUSAGI Satoru  Hokkaido University, 触媒化学研究センター, 准教授 (30359484)

Project Period (FY) 2007 – 2008
Keywords自己組織化単分子層
Research Abstract

再現性の高い単一分子の電気伝導測定を可能とすることを目的とし、金上のチオール、シリコン上Si-C 結合を介した単分子層等の自己組織化単分子層(SAM)上に、合成化学的手法を用いて金属層を析出させ、構造のよく規制された金属層-SAM-金属(または半導体)基板からなる接合構造の作成法を確立した。また実際に電気伝導測定を行って電荷移動機構を明らかにした。さらにフェルミ準位付近に分子軌道を有し、多電子酸化還元能を示すルテニウム二核錯体を骨格に含むSAM を金表面上に形成し、電気化学走査型トンネル顕微鏡を用いて、分子一個ずつを識別しながら電気伝導性の評価を行った。分子の像輝度(トンネル電流の流れやすさ)は、探針、基板、分子軌道のエネルギーレベルの相対位置により変化し、軌道を介した共鳴トンネリングによる電子伝導パスが存在すると解釈した。

  • Research Products

    (9 results)

All 2009 2008 2007

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (2 results)

  • [Journal Article] Electrodeposition of Ag and Pd on a Reconstructed Au(111) Electrode Surface Studied by In situ Scanning Tunneling Microscopy2009

    • Author(s)
      S.Takakusagi, K. Kitamura, K. Uosaki
    • Journal Title

      Electrochim. Acta (印刷中)

    • Peer Reviewed
  • [Journal Article] Stability of underpotentially deposited Ag layers on a Au(111) surface studied by surface X-ray scattering2009

    • Author(s)
      T. Kondo, S. Takakusagi, K. Uosaki
    • Journal Title

      Electrochem.Comm. 11

      Pages: 804-807

    • Peer Reviewed
  • [Journal Article] High-Density Monolayer of Caged, Compact Phosphine Ligand on Gold Surface: Remarkable Reusability in Rh Catalysis2008

    • Author(s)
      K. Hara, R. Akiyama, S. Takakusagi, K. Uosaki, T. Yoshino, H. Kagi, M. Sawamura
    • Journal Title

      Angew. Chem. Int. Ed. 47

      Pages: 1-5

    • Peer Reviewed
  • [Journal Article] In situ Real-time Monitoring of Electrochemical Ag deposition on a Reconstructed Au(111) Studied by Scanning Tunneling Microscopy2008

    • Author(s)
      S. Takakusagi, K. Kitamura, K. Uosaki
    • Journal Title

      J. Phys. Chem. C 112

      Pages: 3073-3077

    • Peer Reviewed
  • [Journal Article] Functionalization of Silicon Surfaces with Catalytically Active Pd Complexes and Application to the Aerobic Oxidation of Benzylic Alcohols2007

    • Author(s)
      K. Hara, S. Tayama, H. Kano, T. Masuda, S. Takakusagi, T. Kondo, K. Uosaki, M. Sawamura
    • Journal Title

      Chem. Commun.

      Pages: 4280-4282

    • Peer Reviewed
  • [Journal Article] Structure of Au(111) and Au(100) Single Crystal Electrode Surfaces at Various Potentials in Sulfuric Acid Solution Determined by In situ Surface X-ray Scattering2007

    • Author(s)
      T. Kondo, J. Morita, K. Hanaoka, S. Takakusagi, K. Tamura, M. Takahasi, J. Mizuki, K. Uosaki
    • Journal Title

      J. Phys. Chem. C 111

      Pages: 13197-13204

    • Peer Reviewed
  • [Journal Article] Photoanodic Formation of an Organic Monolayer on a Hydrogen-terminated Si(111) Surface via Si-C Covalent Bond Using a Grignard Reagent and its Application for One-step Monolayerpatterning2007

    • Author(s)
      S. Takakusagi, T. Miyasaka, K. Uosaki
    • Journal Title

      J. Electroanal. Chem. 599

      Pages: 344-348

    • Peer Reviewed
  • [Presentation] 分子-電極接合形成過程のXAFS による構造解析2008

    • Author(s)
      高草木達
    • Organizer
      PF 研究会「電気化学への放射光利用X 線技術の応用」
    • Place of Presentation
      KEK(つくば)
    • Year and Date
      2008-08-05
  • [Presentation] Potential dependent electrodeposition process of Ag on a reconstructed Au(111) surface studied by in situ scanning tunneling microscopy2008

    • Author(s)
      S. Takakusagi, K. Kitamura, K. Uosaki
    • Organizer
      International mini-Symposium on Control and Analysis of Reactions at Electrolyte/Solution Interface with Atomic/ Molecular Resolution
    • Place of Presentation
      Sapporo
    • Year and Date
      2008-03-10

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Published: 2010-06-10   Modified: 2016-04-21  

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