時間分解界面振動分光法によるソフトマター界面構造の速度・分子論的追跡

• Project Area: Molecular Soft-Interface Science
• Project/Area Number: 21106501
• 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: National Institute for Materials Science (2010); Hokkaido University (2009)
• Principal Investigator: 魚崎 浩平 独立行政法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, コーディネーター (20133697)
• Project Period (FY): 2009 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000); Fiscal Year 2010: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2009: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
• Keywords: 和周波発生分光法 / ソフト界面 / 界面水 / ゲル / ポリマーブラシ / 生体材料 / 表面・界面物性 / ナノバイオ / 超薄膜 / 超分子化学

Research Abstract

本研究は、界面選択的な振動分光法である和周波発生(SFG)分光法を「ソフトマター界面」へ適応し、ソフトマター自身と界面の水の構造を明らかにし、分子間相互作用(水素結合等)に関する情報を得ることを目的としている。本年度は、以下の2つの項目について検討を行った。
【1】低摩擦性高分子ゲル界面水の構造評価
Poly vinyl alcohol(PVA)ゲルなどの低摩擦性ゲルは、含水状態で非常に低い摩擦係数を示す。この摩擦特性はゲルと接触界面に潤滑剤として働く水の層が存在し、その水の層が低摩擦性を持つための重要な役割を果たしていると考えられている。そこで、SFG分光法を高分子ゲル/固体界面へ適用させ界面水の構造評価を行った。その結果、接触界面の水素結合の弱い水分子が低摩擦に関連していることが分かった。
【2】種々の環境下での高分子電解質膜の構造評価
生体膜のモデルとして知られる高分子電解質ブラシの分子構造および水と接触させたときの構造変化をSFG分光法により評価し、周囲の環境変化(水、水蒸気、Arガス)に対する表面構造の変化を追跡し、ブラシと水分子間の相互作用を明らかにした。具体的には、乾燥窒素中では、メチル基に由来したピークしか見られないことから、アルキル鎖部分がall-trans構造をとっているが、水蒸気と接触することでアルキル部位は水を嫌い、乱れた構造をとることが分かった。さらに水と完全に接触すると、水中ではアルキル部位はランダムな構造をとることが示唆された。

Research Products

• [Journal Article] Interfacial Molecular Structures of Polyclectrolyte Brush in Contact with Dry Nitrogen, Water Vapor, Liquid Water, and Aqueous Electrolyte Solution Studied by Sum Frequency Generation Spectroscopy (2010)
  • Author(s): Kohei Uosaki, et al.
  • Journal Title: J.Am.Chem.Soc. Volume: 132 Pages: 17271-17276
  • Peer Reviewed
• [Journal Article] Substrate dependent structure of adsorbed aryl isocyanide studied by sum frequency generation (SFG) spectroscopy (2010)
  • Author(s): Mikio Ito, et al.
  • Journal Title: Phys.Chem.Chem.Phys. Volume: 12 Pages: 3156-3163
  • Peer Reviewed
• [Journal Article] Local conformation of poly (methyl methacrylate) at nitrogen and water interfaces (2010)
  • Author(s): Y.Tateishi, et al.
  • Journal Title: Polymer Chemistry Volume: 1 Pages: 303-311
  • Peer Reviewed
• [Journal Article] Gap-Mode SERS Studies of Azobenzene-Containing Self-Assembled Monolayers on Au(111) (2010)
  • Author(s): U.Jung
  • Journal Title: J.Coll.Int.Sci. 341 Pages: 366-375
  • Peer Reviewed
• [Journal Article] 1,6-Hexanedithiol Self-Assembled Monolayers on Au(111)Investigated by Electrochemical, Spectroscopic, and Molecular Mechanics Methods (2010)
  • Author(s): D.Qu
  • Journal Title: J.Phys.Chem.C 114 Pages: 497-505
  • Peer Reviewed
• [Journal Article] Layer by Layer Construction of Metal-Organic Molecule Bilayer on a Au(111)Surface (2010)
  • Author(s): D.Qu
  • Journal Title: Chem.Lett. 39 Pages: 110-111
  • Peer Reviewed
• [Journal Article] Effect of Coating by Perfluorosulfonated Ionomer Film on Electrochemical Behaviors of Pt(111)Electrode in Acidic Solutions (2010)
  • Author(s): F.b.Sonsudin
  • Journal Title: Chem.Lett. 39 Pages: 286-287
  • Peer Reviewed
• [Journal Article] Substrate Dependent Structure of Adsorbed Aryl Isocyanides Studied by Sum Frequency Generation(SFG)Spectroscopy (2010)
  • Author(s): M.Ito
  • Journal Title: PCCP 2010 Pages: 3156-3163
  • Peer Reviewed
• [Journal Article] Humidity-Dependent Structure of Surface Water on Perfluorosulfonated Ionomer Thin Film Studied by Sum Frequency Generation Spectroscopy (2010)
  • Author(s): H.Noguchi
  • Journal Title: J.Phys.Chem.C 114 Pages: 3958-3961
  • Peer Reviewed
• [Journal Article] Pt Nano-Layer Formation by Redox Replacement of Cu Adlayer on Au(111)Surface (2009)
  • Author(s): D.Qu
  • Journal Title: Bull.Kor.Chem.Soc. 30 Pages: 2875-2876
  • Peer Reviewed
• [Presentation] Characterization of interfacial water structure at thermo-responsive material surfaces studied by SFG spectroscopy (2010)
  • Author(s): Hidenori Noguchi
  • Organizer: Pacifichem 2010
  • Place of Presentation: Honolulu
  • Year and Date: 2010-12-16
• [Presentation] In situ, Real Time Monitoring and Electron Transfer Dynamics at Solid/Liquid Interface (2010)
  • Author(s): 魚崎浩平
  • Organizer: The 1^<st> Symposium of ICNSEE(Innovative Center of Nanomaterials Science for Environment and Energy), MEXT : Development of Environmental Technology Using Nanotechnology
  • Place of Presentation: Tsukuba
  • Year and Date: 2010-02-09
• [Presentation] 貴金属フリー・ナノハイブリッド触媒の創製 (2010)
  • Author(s): 魚崎浩平
  • Organizer: 「元素戦略/希少金属代替材料開発」第4回公開シンポジウム
  • Place of Presentation: 東京
  • Year and Date: 2010-02-01
• [Presentation] 時間分解界面振動分光法によるソフトマター界面構造の速度・分子論的追跡 (2010)
  • Author(s): 魚崎浩平
  • Organizer: 文部科学省科学研究費補助金・新学術領域研究「ソフトインターフェースの分子科学」第3回公開シンポジウム
  • Place of Presentation: つくば
  • Year and Date: 2010-01-22
• [Presentation] 電気化学・光電気化学的エネルギー変換のための原子・分子分解能での界面構造制御 (2010)
  • Author(s): 魚崎浩平
  • Organizer: 触媒学会北海道地区札幌講演会
  • Place of Presentation: 札幌
  • Year and Date: 2010-01-22
• [Presentation] In situ, Dynamic Nanoscale Determination of Geometric, Electronic and Molecular Structures at Solid/Liquid Interface (2010)
  • Author(s): 魚崎浩平
  • Organizer: 第1回ナノ材料科学環境拠点セミナー
  • Place of Presentation: つくば
  • Year and Date: 2010-01-14
• [Presentation] 赤外分光法によるペプチド固相合成過程におけるペプチド構造のその場追跡 (2010)
  • Author(s): 野口秀典
  • Organizer: 日本化学会第4回関東支部大会
  • Place of Presentation: 筑波大学(つくば)
• [Presentation] 和周波発生分光法によるソフトナノ界面の分子構造評価 (2010)
  • Author(s): 魚崎浩平
  • Organizer: 第59回高分子化学討論会
  • Place of Presentation: 北海道大学(札幌)(依頼講演)
• [Presentation] 和周波発生分光法による温度応答性高分子表面の水の構造評価 (2010)
  • Author(s): 野口秀典
  • Organizer: 第4回分子科学討論会2010
  • Place of Presentation: 大阪大学(豊中)
• [Presentation] 赤外分光法によるペプチド固相合成過程におけるペプチド構造のその場追跡 (2010)
  • Author(s): 野口秀典
  • Organizer: 第30回表面科学学術講演会
  • Place of Presentation: 大阪大学(吹田)
• [Presentation] 『固液界面におけるナノ構造のその場決定と機能性物質相の構築』(学会賞受賞講演) (2010)
  • Author(s): 魚崎浩平
  • Organizer: 日本化学会第90春季年会
  • Place of Presentation: 東大阪
• [Presentation] 和周波発生分光法による電極界面構造評価 (2009)
  • Author(s): 野口秀典
  • Organizer: 日本分光学会高感度表面・界面部会第2回シンポジウム
  • Place of Presentation: つくば
  • Year and Date: 2009-12-25
• [Presentation] 時間分解界面振動分光法によるソフトマター界面構造の速度・分子論的追跡 (2009)
  • Author(s): 魚崎浩平
  • Organizer: 文部科学省科学研究費補助金新学術領域研究「ソフトインターフェースの分子科学」第2回公開シンポジウム
  • Place of Presentation: 和光
  • Year and Date: 2009-09-29
• [Presentation] グリーンナノテクノロジーと化学 (2009)
  • Author(s): 魚崎浩平
  • Organizer: 第7回化学イノベーションシンポジウム
  • Place of Presentation: 札幌
  • Year and Date: 2009-08-08
• [Presentation] Interfacial Arrangements with Atomic/Molecular Resolution for Electrochemical and Photoelectrochemical Energy Conversion (2009)
  • Author(s): 魚崎浩平
  • Organizer: International Symposium on Frontiers of Electrochemical Science and Technology
  • Place of Presentation: Xi'an, China
• [Presentation] In situ Real Time Investigation on the Structure at Electrode/Electrolyte Interfaces by Surface X-Ray Scattering (2009)
  • Author(s): 魚崎浩平
  • Organizer: The 60^<th> Annual Meeting of the International Society of Electrochemistry
  • Place of Presentation: Beijing, China
• [Presentation] Effect of Relative Humidity on Water Structure at Nafion Thin Film Studied by Sum Frequency Generation Spectroscopy (2009)
  • Author(s): 野口秀典
  • Organizer: The 60^<th> Annual Meeting of the International Society of Electrochemistry, Emerging Trends and Challenges in Electrochemistry
  • Place of Presentation: Beijing, China
• [Presentation] In situ Real Time Determination of Molecular Structures at Solid/Liquid Interfaces by Sum Frequency Generation Spectroscopy (2009)
  • Author(s): 魚崎浩平
  • Organizer: International Symposium on Nanoelectrochemistry and Spectroelectrochemistry
  • Place of Presentation: Xiamen, China
• [Presentation] 赤外分光法によるペプチド固相合成過程におけるペプチド構造のその場追跡 (2009)
  • Author(s): 野口秀典
  • Organizer: 第62回コロイドおよび界面化学討論会
  • Place of Presentation: 岡山
• [Presentation] 和周波発生分光法による Nafion/水蒸気界面水の構造評価 (2009)
  • Author(s): 野口秀典
  • Organizer: 第3回分子科学討論会2009
  • Place of Presentation: 名古屋
• [Presentation] Efficiency Enhancement by Metal Nanoparticles for Photoelectrochemical Reactions at Molecular Layer Modified Metal and Semiconductor Electrodes (2009)
  • Author(s): 魚崎浩平
  • Organizer: The 16^<th> China-Japan Bilateral Symposium on Intelligent Electrophotonic Materials & Molecular Electronics(SIEMME 16)
  • Place of Presentation: Changchun, China
• [Presentation] Construction and Electrocatalytic Activity of Two-Dimensional Pt-Ru Nanocomposite Prepared from Pt-Ru Dinuclear Complexes (2009)
  • Author(s): 魚崎浩平
  • Organizer: 216^<th> Electrochemical Society Meeting
  • Place of Presentation: Vienna, Austria
• [Presentation] Sum Frequency Generation(SFG)Studies on Molecular Structure at Electrochemical Interfaces Related to Electrocatalysis (2009)
  • Author(s): 野口秀典
  • Organizer: 216^<th> Electrochemical Society Meeting
  • Place of Presentation: Vienna, Austria
• [Presentation] Effect of Relative Humidity on Water Structure at Nafion Thin Film Studied by Sum Frequency Generation Spectroscopy (2009)
  • Author(s): 野口秀典
  • Organizer: 216^<th> Electrochemical Society Meeting
  • Place of Presentation: Vienna, Austria
• [Presentation] 和周波発生分光法による Nafion/水蒸気界面水の構造評価 (2009)
  • Author(s): 野口秀典
  • Organizer: 第29回表面科学学術講演会
  • Place of Presentation: 東京
• [Presentation] Interfacial Arrangements with Atomic/Molecular Resolution for Photoelectrochemical Energy Conversion(Plenary Lecture) (2009)
  • Author(s): 魚崎浩平
  • Organizer: The 6^<th> Korea-Japan Symposiumon Frontier Photoscience
  • Place of Presentation: Sejong, Korea
• [Presentation] Light-Chemical-Electric Energy Conversion at Solid/Liquid Interfaces (2009)
  • Author(s): 魚崎浩平
  • Organizer: 2009 Northeast Asian Symposium on "Renewable Energy"
  • Place of Presentation: Hiroshima
• [Presentation] Eficiency Enhancement by Metal Nnoparticles for Photoelectrochemical Reactions at Molecular Layer Modified Metal and Semiconductor Electrodes (2009)
  • Author(s): 魚崎浩平
  • Organizer: The 5^<th> Nanjing University-Hokkaido University Joint Symposium & 2009 Nanjing-AHNU-Hokkaido GCOE-NIMS/MANA Joint Symposium
  • Place of Presentation: Nanjing and Wuhu, China
• [Presentation] Characterization of Interfacial Water Structure at Thermo-Responsive Polymer Surface Studied by SFG Spectroscopy (2009)
  • Author(s): Y.Waki
  • Organizer: The 5^<th> Nanjing University-Hokkaido University Joint Symposium & 2009 Nanjing-AHNU-Hokkaido GCOE-NIMS/MANA Joint Symposium
  • Place of Presentation: Nanjing and Wuhu, China
• [Presentation] Efficiency Enhancement by Metal Nanoparticles for Photoelectrochemical Reactions at Molecular Layer Modified Metal and Semiconductor Electrodes (2009)
  • Author(s): 魚崎浩平
  • Organizer: 12^<th> SNU and Hokkaido University Joint Symposium on Nano Green Chemistry for Sustainable Society
  • Place of Presentation: Seoul, Korea
• [Book] 1.11 SAM膜「現代界面コロイド科学の事典」 (2010)
  • Author(s): 魚崎浩平
  • Total Pages: 2
  • Publisher: 丸善株式会社
• [Book] Molecular Nano Dynamics, 2 Volumes (2009)
  • Author(s): H.Fukumura(共編)
  • Total Pages: 1200
  • Publisher: Wiley-VCH
• [Book] Molecular Nano Dynamics, Volume 1, Spectroscopic Methods and Nanostructures (2009)
  • Author(s): H.Noguchi(分担執筆)
  • Publisher: Wiley-VCH
• [Remarks]
  • URL: http://samurai.nims.go.jp/UOSAKI_Kohei-j.html
• [Remarks]
  • URL: http://pchem.sci.hokudai.ac.jp/