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2008 Fiscal Year Annual Research Report

一つの粒子が引き起こす化学反応を用いたナノ構造体の形成と特性

Research Project

Project/Area Number 17686079
Research InstitutionOsaka University

Principal Investigator

関 修平  Osaka University, 大学院・工学研究科, 准教授 (30273709)

KeywordsLET / イオンビーム / ポリシラン / ゲル / SiC / セラミック / ナノワイヤー / 自己凝集
Research Abstract

高い羊ネルギーで加速された原子・イオンが材料に入射すると、粒子トラックと呼ばれる飛跡に沿った非常に局所的な範囲内に高エネルギーを付与する。ターゲットとして放射線照射によって架橋反応を引き起こす高分子を選択すると、イオンビームを照射した際に、その飛跡に沿ってイオントラック内で架橋反応を起こしゲル化することによってナノメートルスケールの円柱状のひも(ナノワイヤー)が形成される。本研究では、通常の方法では形成することの不可能な、アスペクト比500を超える超高アスペクトナノワイヤーの形成に成功した。また、ベースとなる高分子材料の化学構造を検討することにより、個々に形成されたナノワイヤーの凝集特性を制御し、1次元ナノ構造体から2次元ナノ構造シートへ成長させることに成功した。
一方で、入射する粒子の飛呈が十分確保できる場合には、異種の高分子から構成される高分子多層膜をターゲットとして、それぞれの層を構成する高分子をベースとしたナノワイヤーの"連結体"を形成できる可能性がある。ここでは溶媒に対する親媒性の大きく異なる高分子を多層化し、"連結型"ナノワイヤーの形成を試みた。高分子多層膜として極性・非極性溶媒に溶解する高分子を交互に積層して多層膜とし、それぞれの部位の親媒性の違いから、選択凝集型ナノ構造体の形成に成功した。

  • Research Products

    (25 results)

All 2008 2007

All Journal Article (21 results) (of which Peer Reviewed: 21 results) Presentation (1 results) Book (1 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Mobility and Dynamics of Charge Carrier in Rubrene Single Crystal Studied by Flash-Photolysis Microwave Conductivity and Optical Spectroscopy2008

    • Author(s)
      A. Saeki, S. Seki, T. Takenobu, Y. Iwasa, and S. Tagawa
    • Journal Title

      Adv. Mater. 20

      Pages: 920-923

    • Peer Reviewed
  • [Journal Article] In-situ Formation of MgO/titanate Heterostructured Nanowires and Effect of Heterointerface on Transport Properties2008

    • Author(s)
      K. Nagashima, T. Yanagida, H. Tanaka, S. Seki, A. Saeki, S. Tagawa, and T. Kawai
    • Journal Title

      J. Am. Chem. Soc. 130

      Pages: 5378-5382

    • Peer Reviewed
  • [Journal Article] Electronegative Oligothiophenes Fully Anneleated with Hexafluorocyclopentene : Synthesis, Properties, and Intrinsic Electron Mobility2008

    • Author(s)
      Y. Umemoto, Y. Ie, A. Saeki, S. Seki, S. Tagawa, and Yoshio Aso
    • Journal Title

      Org. Lett. 10

      Pages: 1095-1098

    • Peer Reviewed
  • [Journal Article] Superstructure-Dependent Optical and Electrical Properties of Unusual Face-to-Face π-Stacked One-Dimensional Assembly of Dehydrobenzo[12]annulene in Crystalline State2008

    • Author(s)
      I. Hisaki, Y. Sakamoto, H. Shigemitsu, N. Tohnai, M. Miyata, S. Seki, A. Saeki, and S. Tagawa
    • Journal Title

      Chem Eur. J. 14

      Pages: 4179-4187

    • Peer Reviewed
  • [Journal Article] Multi-Functional Polymer Nanowires with Ultra-high Aspect Ratio Produced by Single Particle Nano-fabrication Technique2008

    • Author(s)
      S. Seki, S. Watanabe, M. Sugimoto, S. Tagawa, and S. Tsukuda
    • Journal Title

      J. Photopolym. Sci. Technol. 21

      Pages: 541-543

    • Peer Reviewed
  • [Journal Article] Amphiphilic Molecular Design as a Rational Strategy for Tailoring Bicontinuous Electron Donor and Acceptor Arrays : Photoconductive Liquid Crystalline O ligothophene-C60 Dyads2008

    • Author(s)
      W. S. Li, Y. Yamamoto, T. Fukushima, A. Saeki, S. Seki, S. Tagawa, H. Masunaga, S. Sasaki, M. Takata, and T. Aida
    • Journal Title

      J. Am. Chem. Soc. 130

      Pages: 8883-8887

    • Peer Reviewed
  • [Journal Article] Optoelectronic Properties and Nanostructure Formation of o-Conjugateg Polymers2007

    • Author(s)
      S. Seki and S. Tagawa
    • Journal Title

      Polymer J 39

      Pages: 277-293

    • Peer Reviewed
  • [Journal Article] Formation of Single Quantum Dot in Single-Walled Carbon Nanotube Channel Using Focused-Ion-Beam Technique2007

    • Author(s)
      K. Maehashi, H. Ozaki, Y. Ohno, K. Inoue, K. Matsumoto, S. Seki, and S. Tagawa
    • Journal Title

      Appl. Phys. Lett. 90

      Pages: 023103,1-3

    • Peer Reviewed
  • [Journal Article] Cross-Linked Silicon Based Polymer Nanowire Formation by High Energy Charged Particles2007

    • Author(s)
      S. Seki, S. Tsukuda, M. Sugimoto, and S. Tagawa
    • Journal Title

      Surf. Coat. Technol. 201

      Pages: 8486-8489

    • Peer Reviewed
  • [Journal Article] Effect of Ion Beam Energy and Polymer Weight on the Thickness of Nanowires Produced by Ion Bombardment of Polystyrene Thin Films2007

    • Author(s)
      S. Tsukuda, S. Seki, M. Sugimoto, and S. Tagawa
    • Journal Title

      Surf. Coat. Technol. 201

      Pages: 8526-8530

    • Peer Reviewed
  • [Journal Article] Ion Beam Induced Nano-Space Reactions and Nanowire Formation in Polymers by High Energy Sub-μm Heavy Ion Beams2007

    • Author(s)
      S. Tagawa, S. Tsukuda, S. Seki, M. Sugimoto, T. Sato, M. Oikawa, and T. Sakai
    • Journal Title

      Surf. Coat. Technol. 201

      Pages: 8495-8498

    • Peer Reviewed
  • [Journal Article] Electronic Properties of the Charge Carriers on Oligofluorene Backbone2007

    • Author(s)
      Y. Koizumi, S. Seki, A. Saeki, and S. Tagawa
    • Journal Title

      Radiat. Phys. Chem. 76

      Pages: 1337-1341

    • Peer Reviewed
  • [Journal Article] Formation of Isolated Ultrafine Optical Nanofibers by Single Particle Nanofabrication Technique2007

    • Author(s)
      S. Seki, S. Tsukuda, S. Tagawa, M. Sugimoto, A. Watanabe, and T. Miyashita
    • Journal Title

      J. Photopolym. Sci. Technol. 20

      Pages: 125-128

    • Peer Reviewed
  • [Journal Article] Radiation Induced One-Step One-pod Polymerization of Functional Conjugated Molecules2007

    • Author(s)
      Y. Koizumi, S. Seki, K. Okamoto, A. Saeki, and S. Seki
    • Journal Title

      J. Photopolym. Sci. Technol. 20

      Pages: 97-100

    • Peer Reviewed
  • [Journal Article] Molecular Engineering of Coaxial Donor-Acceptor Heterojunction by Coassembly of Two Different Hexabenzocoronenes : Graphitic Nanotubes with Enhanced Photoconducting Properties2007

    • Author(s)
      Y. Yamamoto, A. Saeki, S. Seki, et al.
    • Journal Title

      J. Am. Chem Soc. 129

      Pages: 9276-9277

    • Peer Reviewed
  • [Journal Article] Effects of Porphyrin Substituents on Film Structure and Photoelectrochemical Properties of Porphyrin-Fullerene Composite Clusters Electrophoretically Deposited on Nanostructured SnO2 Electrodes2007

    • Author(s)
      H. Imahori, S. Seki, A. Saeki, et al.
    • Journal Title

      Chem Eur. J. 13

      Pages: 10182-10193

    • Peer Reviewed
  • [Journal Article] Electric Field Enhancement of Nano Gap of Silver Prisms2007

    • Author(s)
      K. Yamaguchi, T. Inoue, M. Fujii, M. Haraguchi, T. Okamoto, M. Fukui, S. Seki, and S. Tagawa
    • Journal Title

      Chin. Phys. Lett. 24

      Pages: 2934-2937

    • Peer Reviewed
  • [Journal Article] Polysilane Based Organic Light Emitting Diodes : Simultaneous Ultraviolet and Visible Emission2007

    • Author(s)
      A. Sharma, M. Katiyar, Deepak, S. Seki, and S. Tagawa
    • Journal Title

      J. Appl. Phys. 102

      Pages: 0845061-0845067

    • Peer Reviewed
  • [Journal Article] Polymer Nanostructure Formation by Particle Beams2007

    • Author(s)
      S. Seki, S. Tsukuda, S. Tagawa, and M. Sugimoto
    • Journal Title

      ACS Symposium Series 978

      Pages: 220-231

    • Peer Reviewed
  • [Journal Article] Fluoropolymer Outgassing in Micro-and Nano-Fabrication2007

    • Author(s)
      Y. Matsui, S. Seki, S. Tagawa, S. Tsuji, and T. Itani
    • Journal Title

      ACS Symposium Series 978

      Pages: 253-260

    • Peer Reviewed
  • [Journal Article] Dynamics of Photogenerated Charge Carrier and Morphology Dependence in Polythiophene Films Studied by In-Situ Time-Resolved Microwave Conductivity and Transient Absorption Spectroscopy2007

    • Author(s)
      A. Saeki, S. Seki, Y. Koizumi, and S. Tagawa.
    • Journal Title

      J. Photochem. Photobiol. A 186

      Pages: 158-165

    • Peer Reviewed
  • [Presentation] 単一の粒子による高分子の3次元ナノ構造制御性2007

    • Author(s)
      関 修平
    • Organizer
      高分子学会 第56回 高分子討論会
    • Place of Presentation
      名古屋工業大学
    • Year and Date
      2007-09-20
  • [Book] 高分子架橋と分解の新展開2007

    • Author(s)
      関 修平
    • Total Pages
      361
    • Publisher
      CMC出版
  • [Patent(Industrial Property Rights)] 高分子多段ナノワイヤー及びスターバースト型ナノ粒子とそれらの製造法2007

    • Inventor(s)
      関 修平, 他
    • Industrial Property Rights Holder
      大阪大学, 他
    • Industrial Property Number
      特願2007-64288
    • Filing Date
      20070400
  • [Patent(Industrial Property Rights)] イオンビーム照射によるセラミックナノワイヤーの製造法2007

    • Inventor(s)
      関 修平, 他
    • Industrial Property Rights Holder
      大阪大学, 他
    • Patent Publication Number
      特開2007-76978
    • Acquisition Date
      20070600

URL: 

Published: 2010-06-11   Modified: 2016-04-21  

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