2003 Fiscal Year Annual Research Report

変位電流・光第2次高調波測定によるフレキシブルナノ界面分子膜の電子物性評価

Research Project

Project/Area Number	15206032
Research Category	Grant-in-Aid for Scientific Research (A)
Research Institution	Tokyo Institute of Technology
Principal Investigator	岩本光正東京工業大学, 大学院・理工学研究科, 教授 (40143664)
Co-Investigator(Kenkyū-buntansha)	野口裕東京工業大学, 大学院・理工学研究科, 日本学術振興会特別研究員周しん東京工業大学, 大学院・理工学研究科, 準客員研究員間中孝彰東京工業大学, 大学院・理工学研究科, 助手 (20323800)
Keywords	分子膜 / マックスウェル変位電流 / 光第2次高調波 / フレキシブル性 / 帯電現象 / ナノ界面
Research Abstract	本研究では、分子膜のフレキシブルな構造についての物理を基礎として、有機電子素子作製への展開を円滑にする工学的手法の確立に向け、マックスウェル変位電流(MDC)測定と光第2次高調波(SHG)の同時測定を基礎として、柔構造界面分子膜の電子・光物性を評価する手法を探求することを目的としている。本年度はまず、新たに導入した波長可変レーザー光源を用いて、キラル分子(アキラルバナナ分子を含む)の水面上単分子膜における変位電流(MDC)と光第2次高調波発生(SHG)を計測した。その結果、キラル分子において単分子膜レベルでのキラル性の観測に成功した。一方、バナナ分子では拡張過程における特徴的な変位電流、表面圧波形が得られ、ピエゾ効果、フレクソエレクトリック効果の観点からの理論解析により説明できた。また分子膜のフレキシブル性の特徴は面内パターン構造として現れるため、現在ブリュスター角顕微鏡の製作を行い、膜の直接観察を試みている。さらに、ナノ界面で発生している電極からの注入による過剰電荷による帯電現象、異種有機分子界面で発生している電子移動などについて評価するため、表面電位、SHG測定を通じて、過剰電子による界面電位形成と双極子による分極現象とを分離する技術を開発している。

Research Products

(12 results)

All Other

All Publications (12 results)

[Publications] Hiroshi Fujimaki: "Second-harmonic generation and Maxwell displacement current spectroscopy of chiral organic monolayers at the air-water interface"Journal of Chemical Physics. Vol.119, No.14. 7427-7434 (2003)
[Publications] Mitsumasa Iwamoto: "Special Section on Recent Progress of Organic Molecular Electronics-FOREWORD"IEICE Transactions on Electronics. Vol.87, No.2. 127-127 (2004)
[Publications] Xin Zhou: "Orientational order in binary mixtures of hard Gaussian overlap molecules"Journal of Chemical Physics. Vol.120, No.4. 1832-1836 (2004)
[Publications] Alex V.Zakharov: "Orientational relaxation phenomeana in Langmuir-Blodgett films at the air-water Interface"Physical Review E. Vol.68, No.3. 031603-1-031603-8 (2003)
[Publications] Yutaka Noguchi: "STM observation of Coulomb staricase behavior through C60 clusters"Current Applied Physics. Vol.3, No.5. 397-399 (2003)
[Publications] Tetsuya Yamamoto: "Detection of the reversible flow behavior of 4-heptyloxy-4'-cyanobiphenyl monolayer at air-water interface by compression and expansion with Maxwell displacement current and optical second harmonic generation"Chemical Physics Letters. Vol.378, No.3. 428-433 (2003)
[Publications] Takaaki Manaka: "Electrostatic Properties of Polyethylene Langmuir-Blodgett films"Japanese Journal of Applied Physics Part1. Vol.42, No.10. 6473-6476 (2003)
[Publications] Takaaki Manaka: "Investigation of single monolayer formation of the evaporated liquid crystalline molecules by the surface potential measurement"IEICE Transactions on Electronics. Vol.87, No.2. 183-184 (2004)
[Publications] Xiao Man Cheng: "Analysis of Second-Harmonic Generation from CuttbPc LB Film/Metal Interface"Chinese Physics Letters. Vol.21, No.1. 153-155 (2004)
[Publications] Yutaka Noguchi: "Photoinduced Gate Modulation and Temperature Dependence in the Coulomb Staircase of Organic Single Electron Tunneling Junctions"Japanese Journal of Applied Physics Part1. (掲載予定).
[Publications] Cheng Quan Li: "Electric field induced second harmonic generation from vacuum evaporated metalophthalocyanine film/metal interface"Japanese Journal of Applied Physics Part1. (掲載予定).
[Publications] Takaaki Manaka: "Spectroscopic evidence of the surface potential built across phthalocyanine thin films on metal electrode"Journal of Chemical Physics. (掲載予定).

2003 Fiscal Year Annual Research Report

変位電流・光第2次高調波測定によるフレキシブルナノ界面分子膜の電子物性評価

Principal Investigator

岩本 光正 東京工業大学, 大学院・理工学研究科, 教授 (40143664)

Research Products

[Publications] Hiroshi Fujimaki: "Second-harmonic generation and Maxwell displacement current spectroscopy of chiral organic monolayers at the air-water interface"Journal of Chemical Physics. Vol.119, No.14. 7427-7434 (2003)

[Publications] Mitsumasa Iwamoto: "Special Section on Recent Progress of Organic Molecular Electronics-FOREWORD"IEICE Transactions on Electronics. Vol.87, No.2. 127-127 (2004)

[Publications] Xin Zhou: "Orientational order in binary mixtures of hard Gaussian overlap molecules"Journal of Chemical Physics. Vol.120, No.4. 1832-1836 (2004)

[Publications] Alex V.Zakharov: "Orientational relaxation phenomeana in Langmuir-Blodgett films at the air-water Interface"Physical Review E. Vol.68, No.3. 031603-1-031603-8 (2003)

[Publications] Yutaka Noguchi: "STM observation of Coulomb staricase behavior through C60 clusters"Current Applied Physics. Vol.3, No.5. 397-399 (2003)

[Publications] Tetsuya Yamamoto: "Detection of the reversible flow behavior of 4-heptyloxy-4'-cyanobiphenyl monolayer at air-water interface by compression and expansion with Maxwell displacement current and optical second harmonic generation"Chemical Physics Letters. Vol.378, No.3. 428-433 (2003)

[Publications] Takaaki Manaka: "Electrostatic Properties of Polyethylene Langmuir-Blodgett films"Japanese Journal of Applied Physics Part1. Vol.42, No.10. 6473-6476 (2003)

[Publications] Takaaki Manaka: "Investigation of single monolayer formation of the evaporated liquid crystalline molecules by the surface potential measurement"IEICE Transactions on Electronics. Vol.87, No.2. 183-184 (2004)

[Publications] Xiao Man Cheng: "Analysis of Second-Harmonic Generation from CuttbPc LB Film/Metal Interface"Chinese Physics Letters. Vol.21, No.1. 153-155 (2004)

[Publications] Yutaka Noguchi: "Photoinduced Gate Modulation and Temperature Dependence in the Coulomb Staircase of Organic Single Electron Tunneling Junctions"Japanese Journal of Applied Physics Part1. (掲載予定).

[Publications] Cheng Quan Li: "Electric field induced second harmonic generation from vacuum evaporated metalophthalocyanine film/metal interface"Japanese Journal of Applied Physics Part1. (掲載予定).

[Publications] Takaaki Manaka: "Spectroscopic evidence of the surface potential built across phthalocyanine thin films on metal electrode"Journal of Chemical Physics. (掲載予定).

岩本光正東京工業大学, 大学院・理工学研究科, 教授 (40143664)