脱着可能な分子－電極接合法の確立と応用

• Project Area: Molecular Architectonics: Orchestration of Single Molecules for Novel Function
• Project/Area Number: 26110515
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Kyoto University
• Principal Investigator: 奥山 弘 京都大学, 理学(系)研究科(研究院), 准教授 (60312253)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000); Fiscal Year 2015: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: 走査トンネル顕微鏡 / 分子接合

Outline of Annual Research Achievements

本年度に行った研究は主に次の２つである。
（１）可逆な分子接合制御を機能性分子に対して応用することを目的として，まずポルフィリンアレー分子をAu(111)表面に蒸着してSTM観測を行った。分子はA01班の小川研究室から提供を受けて領域内の共同研究を進めた。一般に機能性分子は質量数が高く不揮発性なため，エレクトロスプレー法を導入して蒸着を行った。溶媒分子が基板に残らないようにするなど蒸着条件を精査することで，表面上で単分子の単離，観察に成功し，さらにアレーに沿って電子状態を測定した。その結果，伝導度に大きく寄与するHOMOやLUMOの空間分布を明らかにした（RSC Advance 5, 79152, 2015) 。
（２）クロロ基をアンカーとして用いる可能性を探るため，クロロフェノールをCu(110)に吸着し，その吸着状態をSTM. EELSを用いて評価したのち，STMによる非破壊接合の形成を行った。STM探針はベンゼン環とクロロ基に対してそれぞれ独立に接合することが明らかとなり，新しい分子接合の制御を達成した（投稿準備中）。

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] Donostia International Physics Center(スペイン)
• [Journal Article] Adsorption and reaction of H2S on Cu(110) studied using scanning tunneling microscopy (2016)
  • Author(s): A. Shiotari, H. Okuyama, S. Hatta, T. Aruga, I. Hamada
  • Journal Title: Phys. Chem. Chem. Phys Volume: 18 Issue: 6 Pages: 4541-4546
  • DOI: 10.1039/c5cp07726e
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 3.Real-space characterization of hydroxyphenyl porphyrin derivatives designed for single-molecule devices (2015)
  • Author(s): Akitoshi Shiotari, Yusuke Ozaki, Shoichi Naruse, Hiroshi Okuyama, Shinichiro Hatta, Tetsuya Aruga, Takashi Tamaki, and Takuji Ogawa
  • Journal Title: RSC Advances Volume: 5 Issue: 96 Pages: 79152-79156
  • DOI: 10.1039/c5ra12123j
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Controlling single-molecule junction conductance by molecular interactions (2015)
  • Author(s): Y. Kitaguchi, S. Habuka, H. Okuyama, S. Hatta, T. Aruga, T. Frederiksen, M. Paulsson, H. Ueba
  • Journal Title: Scientific Reports Volume: なし Issue: 1 Pages: 11796-11796
  • DOI: 10.1038/srep11796
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Experimental evidence for two-dimensional states localized in subsurface region of Ge(111) (2015)
  • Author(s): K. Yaji, Y. Ohtsubo, S. Hatta, H. Okuyama, R. Yukawa, I. Matsuda, P. Le Fevre, F. Bertran, A. Taleb-Ibrahimi, A. Kakizaki, T. Aruga
  • Journal Title: J. Electron Spectros. Relat. Phenom Volume: 201 Pages: 92-97
  • DOI: 10.1016/j.elspec.2014.09.005
  • Peer Reviewed
• [Journal Article] Role of hydrogen bonding in the catalytic reduction of nitric oxide (2014)
  • Author(s): A. Shiotari, S. Hatta, H. Okuyama, T. Aruga
  • Journal Title: Chemical Science Volume: 5 Issue: 3 Pages: 922-926
  • DOI: 10.1039/c3sc52334a
  • Peer Reviewed
• [Journal Article] Formation of unique trimer of nitric oxide on Cu(111) (2014)
  • Author(s): A. Shiotari, S. Hatta, H. Okuyama, T. Aruga
  • Journal Title: The Journal of Chemical Physics Volume: 141 Issue: 13 Pages: 1347051-5
  • DOI: 10.1063/1.4896558
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Imaging molecular interaction of NO on Cu(110) with a scanning tunneling microscope (2014)
  • Author(s): H. Okuyama
  • Journal Title: The Chemical Record Volume: 14 Issue: 5 Pages: 827-833
  • DOI: 10.1002/tcr.201402029
  • Peer Reviewed
• [Presentation] Environmental control of single-molecule junction conductance (2015)
  • Author(s): H. Okuyama, Y. Kitaguchi, S. Habuka, S. Hatta, T. Aruga, T. Frederiksen, M. Paulsson, H. Ueba
  • Organizer: The international chemical congress of pacific basin societies (Pacifichem2015)
  • Place of Presentation: Hawaii
  • Year and Date: 2015-12-17
  • Int'l Joint Research
• [Presentation] 金属表面における水素結合ダイナミクスの観測 (2015)
  • Author(s): 奥山弘
  • Organizer: 第35回表面科学学術講演会
  • Place of Presentation: つくば
  • Year and Date: 2015-12-01
  • Invited
• [Presentation] Single-molecule surface chemistry with an STM (2015)
  • Author(s): H. Okuyama
  • Organizer: ICQM seminar
  • Place of Presentation: Beijing
  • Year and Date: 2015-11-25
  • Invited
• [Presentation] Controlled switching of single-molecule junctions by mechanical motion of a phenyl ring (2015)
  • Author(s): H. Okuyama, Y. Kitaguchi, S. Habuka, S. Hatta, T. Aruga, T. Frederiksen, M. Paulsson, H. Ueba
  • Organizer: International workshop on molecular architectonics (IWMA2015)
  • Place of Presentation: Shiretoko
  • Year and Date: 2015-08-04
  • Int'l Joint Research
• [Presentation] Environmental control of single-molecule junction conductance (2015)
  • Author(s): H. Okuyama, Y. Kitaguchi, S. Habuka, S. Hatta, T. Aruga, T. Frederiksen, M. Paulsson, and H. Ueba
  • Organizer: International workshop on molecular architectonics (IWMA2015)
  • Place of Presentation: Shiretoko
  • Year and Date: 2015-08-04
  • Int'l Joint Research
• [Presentation] Cu(111)表面における一酸化窒素トライマーの形成 (2015)
  • Author(s): 塩足亮隼、奥山弘、八田振一郎、有賀哲也
  • Organizer: 日本物理学会2015年年次大会
  • Place of Presentation: 東京
  • Year and Date: 2015-03-21
• [Presentation] Imaging molecular interaction between nitric oxide on Cu(110) with an STM (2014)
  • Author(s): 奥山弘
  • Organizer: Vietnam-Malaysia International Chemical Congress
  • Place of Presentation: ハノイ
  • Year and Date: 2014-11-07
  • Invited
• [Presentation] Cu(110)における水素移動反応H2S+O→H2O+Sの直接観測 (2014)
  • Author(s): 塩足亮隼、奥山弘、八田振一郎、有賀哲也、濱田幾太郎
  • Organizer: 第34回表面科学学術講演会
  • Place of Presentation: 松江
  • Year and Date: 2014-11-06 – 2014-11-08
• [Presentation] エレクトロスプレーイオン化法によって金表面に吸着した巨大分子のSTM観察 (2014)
  • Author(s): 成瀬正一、塩足亮隼、奥山弘、八田振一郎、有賀哲也
  • Organizer: 第34回表面科学学術講演会
  • Place of Presentation: 松江
  • Year and Date: 2014-11-06 – 2014-11-08
• [Presentation] NO/Cu(110)の吸着構造変化の振動分光・STM測定 (2014)
  • Author(s): 塩足亮隼、三井拓也、奥山弘、八田振一郎、有賀哲也、小板谷貴典、吉信淳
  • Organizer: 日本物理学会2014年秋季大会
  • Place of Presentation: 春日井
  • Year and Date: 2014-09-09