Spatial conformation and dynamics of interfacial chains investigated by 3D-AFM

• Project/Area Number: 17K17760
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Thin film/Surface and interfacial physical properties; Nanostructural chemistry
• Research Institution: Kanazawa University
• Principal Investigator: Asakawa Hitoshi 金沢大学, ナノマテリアル研究所, 准教授 (90509605)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 原子間力顕微鏡 / 界面 / 分子鎖 / 原子・分子分解能 / ナノ計測 / ナノサイエンス / 界面分子鎖 / 固液界面 / 原子・分子 / 走査プローブ顕微鏡 / AFM / ナノ材料

Outline of Final Research Achievements

Nanoscale molecular chain structures at the interfaces between solids and liquids are considered to have important roles in a wide range of fields such as functional materials and pharmaceuticals. However, the almost roles remain unclear because of the difficulty of direct observation of such molecular chain structures that exist only in quite small nanospace at the interfaces. In this study, we have established a method to visualize the spatial distribution of molecular chain structures and their dynamics by using a three-dimensional scanning atomic force microscopy (3D-AFM) technique.

Academic Significance and Societal Importance of the Research Achievements

ミクロな世界で生じている固液界面現象は摩擦、吸着、反応、溶解など目に見えるマクロ現象の起源となっています。固液界面に存在する分子鎖の構造・ダイナミクスを理解できれば、マクロな現象を原子・分子スケールで理解し、それを制御する技術に発展させることができます。これらを実現できれば、高効率エネルギーシステムや高機能な薬剤、環境浄化材料など社会問題解決に資する幅広い分野の材料開発に貢献できます。

Research Products

• [Int'l Joint Research] City University of Hong Kong(中国)
• [Journal Article] Chiral Monolayers with Achiral Tetrapod Molecules on Highly Oriented Pyrolytic Graphite (2020)
  • Author(s): Asakawa Hitoshi、Matsui Sayaka、Trinh Quang Thang、Hirao Hajime、Inokuma Yasuhide、Ogoshi Tomoki、Tanaka Saki、Komatsu Kayo、Ohta Akio、Asakawa Tsuyoshi、Fukuma Takeshi
  • Journal Title: The journal of Physical Chemistry C Volume: 124 Pages: 7760-7767
  • DOI: 10.1021/acs.jpcc.9b11246
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Direct Imaging of Atomic-Scale Surface Structures of Brookite TiO2 Nanoparticles by Frequency Modulation Atomic Force Microscopy in Liquid (2018)
  • Author(s): Hitoshi Asakawa, Eero Holmstrom, Adam S. Foster, Sunao Kamimura, Teruhisa Ohno and Takeshi Fukuma
  • Journal Title: The Journal of Physical Chemistry C Volume: 122 Pages: 24085-24093
  • DOI: 10.1021/acs.jpcc.8b06262
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Ring Shape-Dependent Self-Sorting of Pillar[n]arenes Assembled on a Surface (2018)
  • Author(s): Ogoshi T, Takashima S, Inada N, Asakawa H, Fukuma T, Shoji Y, Kajitani T, Fukushima T, Tada T, Dotera T, Kakuta T, Yamagishi T
  • Journal Title: Commun. Chem. Volume: 1 Pages: 92-92
  • DOI: 10.1038/s42004-018-0094-z
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Self-assembled monolayers of sulfonate-terminated alkanethiols investigated by frequency modulation atomic force microscopy in liquid (2017)
  • Author(s): Asakawa Hitoshi、Inada Natsumi、Hirata Kaito、Matsui Sayaka、Igarashi Takumi、Oku Norihisa、Yoshikawa Norinobu、Fukuma Takeshi
  • Journal Title: Nanotechnology Volume: 28 Pages: 455603-455603
  • DOI: 10.1088/1361-6528/aa8aa7
  • Peer Reviewed
• [Journal Article] Hydration Structure of Brookite TiO2 (210) (2017)
  • Author(s): Holmstrom, E.; Ghan, S.; Asakawa, H.; Fujita, Y.; Fukuma, T.; Kamimura, S.; Ohno, T.; Foster, A. S.
  • Journal Title: The Journal of Physical Chemistry C Volume: 121 Pages: 20790-20801
  • DOI: 10.1021/acs.jpcc.7b05524
  • Peer Reviewed / Int'l Joint Research
• [Presentation] 液中周波数変調原子間力顕微鏡による超分子集 合体の構造・機能解析 (2019)
  • Author(s): 淺川雅
  • Organizer: 日本顕微鏡学会第75回学術講演会
  • Invited
• [Presentation] 垂直配向集積のためのテトラポッド型アンカー分子の配向・配列評価 (2019)
  • Author(s): 小松 佳代、淺川 雅
  • Organizer: 第80回応用物理学会秋季学術講演会
• [Presentation] HOPG 表面における垂直配向分子集積に向けたテトラポッド型アンカーの AFM 評価 (2019)
  • Author(s): 小松 佳代、淺川 雅
  • Organizer: 2019年日本表面真空学会学術講演会
• [Presentation] Macrocyclic host-guest complexations visualized by frequency-modulation atomic force microscopy in water (2018)
  • Author(s): Hitoshi Asakawa
  • Organizer: The 21st International Conference on Non-contact Atomic Force Microscopy
  • Int'l Joint Research
• [Presentation] Spatial distribution of interfacial nanochains visualized by 3D-SFM in liquid (2018)
  • Author(s): Kayo Komatsu
  • Organizer: 4th International Conference on Scanning Probe Microscopy on Soft and Polymeric Materials
  • Int'l Joint Research
• [Presentation] 3D potential map of host-guest interactions investigated by 3D-SFM in liquid (2018)
  • Author(s): Shumpei Takano
  • Organizer: 4th International Conference on Scanning Probe Microscopy on Soft and Polymeric Materials
  • Int'l Joint Research
• [Presentation] AFM investigation of self-assembled monolayers of tetraphenylmethane derivatives (2018)
  • Author(s): Sayaka Matsui
  • Organizer: 4th International Conference on Scanning Probe Microscopy on Soft and Polymeric Materials
  • Int'l Joint Research
• [Presentation] In situ visualization of host-guest complex formation by FM-AFM in liquid (2018)
  • Author(s): Yuta Sawada, Shu Takashima, Tomoki Ogoshi, Hitoshi Asakawa
  • Organizer: 9th International conference on molecular electronics and bioelectronics
  • Int'l Joint Research
• [Presentation] Direct observation of host-guest complex formations by frequency-modulation atomic force microscopy in water (2018)
  • Author(s): Hitoshi Asakawa
  • Organizer: The 6th Symposium on Challenges for Carbon-based Nanoporous Materials
  • Int'l Joint Research / Invited
• [Presentation] 液中3D-SFMによるホスト-ゲスト相互作用力分布の単分子スケール実空間計測 (2018)
  • Author(s): 松井 彩香、高野 駿平、太田 明雄、淺川 毅、淺川 雅
  • Organizer: 第78回 応用物理学会 秋季学術講演会
• [Presentation] 3次元走査型力顕微鏡によるホスト-ゲスト相互作用力分布の実空間計測 (2018)
  • Author(s): 高野 駿平、松井 彩香、太田 明雄、淺川 毅、淺川 雅
  • Organizer: 第78回 応用物理学会 秋季学術講演会
• [Presentation] Macrocyclic host-guest interactions investigated by 3D-SFM in liquid (2018)
  • Author(s): Hitoshi Asakawa, Shumpei Takano, Sayaka Matsui
  • Organizer: International Symposium on Atomic Force Microscopy at Solid-Liquid Interfaces
  • Int'l Joint Research
• [Presentation] AFM investigation of biological molecules in liquid with sub-nm resolution (2018)
  • Author(s): Hitoshi Asakawa
  • Organizer: The 1st NanoLSI International Symposium - Towards Establishment of New Research Field: Nanoprobe Life Science-
  • Int'l Joint Research
• [Presentation] 分子認識に関わるホスト-ゲスト相互作用の3次元ポテンシャルマップ (2018)
  • Author(s): 高野 駿平、松井 彩香、生越 友樹、太田 明雄、淺川 毅、淺川 雅
  • Organizer: 第65回応用物理学会春季学術講演会
• [Presentation] 3次元SFMによる界面ナノ分子鎖の実空間計測に向けたモデル構築 (2018)
  • Author(s): 小松 佳代、松井 彩香、高野 駿平、太田 明雄、淺川 毅、淺川 雅
  • Organizer: 第65回応用物理学会春季学術講演会
• [Book] 走査型プローブ顕微鏡 (2017)
  • Author(s): 淺川 雅、岡嶋 孝治、大西 洋
  • Total Pages: 128
  • Publisher: 共立出版
  • ISBN: 9784320044548