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2016 Fiscal Year Annual Research Report

Development of Large Susceptibility Materials by Liquid Crystalline Soft Matter

Research Project

Project/Area Number 25248021
Research InstitutionKyushu University

Principal Investigator

菊池 裕嗣  九州大学, 先導物質化学研究所, 教授 (50186201)

Co-Investigator(Kenkyū-buntansha) 樋口 博紀  九州大学, 先導物質化学研究所, 助教 (50432951)
Project Period (FY) 2013-04-01 – 2017-03-31
Keywords液晶 / ブルー相 / 電気光学効果 / Kerr効果 / ディスクリネーション / フラストレーション / 誘電異方性
Outline of Annual Research Achievements

小さなインプットで大きなアウトプットを示す材料の開発は、将来の省エネルギー社会、高度情報化社会を支える基盤的技術として重要な意義をもつ。研究代表者らは、分子の自己組織や協同運動の科学に基づき、巨大感受率を示すソフトマター材料の開発を推進している。これまで、高分子安定化ブルー相と呼ばれる液晶系ソフトマターにおいて最高クラスの電気光学応答(Kerr効果)を広い温度範囲にわたり発現させることに成功している。本研究の目的は、高分子安定化ブルー相のさらなる性能向上を推し進めるとともに、これまでと異なる切り口・新しい原理に基づく巨大感受率材料の創出と実用化を目指す。
本年度は、高分子安定化ブルー相のKerr効果を向上させる目的で、母液晶の誘電異方性に着目した。液晶の誘電異方性は電場による液晶回転のトルクやフレデリクス転移の閾値電圧を決める重要なパラメータである。本研究では液晶骨格にジオキサン環を有するある液晶化合物において極めて大きな誘電異方性が発現されることを見出した。通常の液晶では誘電異方性の絶対値は0~20程度で、50を超えることは希である。しかしながら新たに見出されたジオキサン系液晶の誘電異方性は10000を超える異常な値を示す。分子骨格から計算される双極子モーメントは一般的な液晶であるシアノビフェニル系の2倍程度有るので、この異常な誘電異方性の大きさは、分子の組織構造に由来すると予想した。そこで、三角波電場印加に伴う分極挙動を測定したところ、大きな誘電異方性を示す温度領域で強誘電的な挙動を示すとともに、その分極の大きさは無機強誘電体にも匹敵する大きさであった。さらに、第二高調波発生(SHG)測定を行ったところ、大きな誘電異方性を示す温度領域で明確なSHG信号が確認できた。以上より、これまで例のない高応答性の液晶の発見とメカニズム解明に成功した。

Research Progress Status

28年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

28年度が最終年度であるため、記入しない。

  • Research Products

    (25 results)

All 2017 2016

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results) Presentation (18 results) (of which Int'l Joint Research: 14 results,  Invited: 1 results) Patent(Industrial Property Rights) (1 results) (of which Overseas: 1 results)

  • [Journal Article] Unimodal nematic liquid crystalline random copolymers designed for accepting chiral dopants2017

    • Author(s)
      Takumi Sodemura, Shoichi Kubo, Hiroki Higuchi, Hirotsugu Kikuchi, and Masaru Nakagawa
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 90 Pages: 216-222

    • DOI

      10.1246/bcsj.20160343

    • Peer Reviewed
  • [Journal Article] Bis(diarylethenyl)-thiophenes,-bithiophenes, and -terthiophenes: A New Series of Electrochromic Systems That Exhibit A Fluorescence Response2017

    • Author(s)
      Ishigaki, Y., Kawai, H., Katoono, R., Fujiwara, K., Higuchi, H., Kikuchi, H., Suzuki, T.
    • Journal Title

      Can. J. Chem.

      Volume: 95 Pages: 243-252

    • DOI

      10.1139/cjc-2016-0222

    • Peer Reviewed
  • [Journal Article] Hierarchical spatial heterogeneity in liquid crystals composed of graphene oxides2016

    • Author(s)
      Atsuomi Shundo, Koichiro Hori, David P. Penaloza, Jr., Yuji Matsumoto, Yasushi Okumura, Hirotsugu Kikuchi, Kyung Eun Lee, Sang Ouk Kim and Keiji Tanaka
    • Journal Title

      Phys. Chem. Chem. Phys.

      Volume: 18 Pages: 22399-22406

    • DOI

      10.1039/C6CP03614G

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Study of polymer-stabilised blue phase liquid crystal on a single substrate2016

    • Author(s)
      Naoto Endo, Takahiro Matsumoto, Hirotsugu Kikuchi, Munehiro Kimura
    • Journal Title

      Liquid Crystals

      Volume: 43 Pages: 66-76

    • DOI

      10.1080/02678292.2015.1055602

    • Peer Reviewed
  • [Journal Article] Bragg reflection band width and optical rotatory dispersion of cubic blue phase liquid crystals2016

    • Author(s)
      H. Yoshida, K. Anucha, Y. Ogawa, Y. Kawata, M. Ozaki, J. Fukuda, H. Kikuchi
    • Journal Title

      Physical Review E

      Volume: 94 Pages: 042703

    • DOI

      10.1103/PhysRevE.94.042703

    • Peer Reviewed
  • [Journal Article] Liquid Crystal Anchoring Transitions and Weak Anchoring Interface Formation at Surfaces Created by Uniquely Designed Acrylate Copolymers2016

    • Author(s)
      Rijeesh, K., Higuchi, H., Okumura, Y., Yamamoto, J., Kikuchi, H.
    • Journal Title

      Polymer

      Volume: online Pages: online

    • DOI

      10.1016/j.polymer.2016.12.012

    • Peer Reviewed
  • [Presentation] Calculation of Confocal Microscope Images of Cholesteric Blue Phases2017

    • Author(s)
      Jun-ichi Fukuda, Yasushi Okumura, and Hirotsugu Kikuchi
    • Organizer
      The 3rd Asian Conference on Liquid Crystals
    • Place of Presentation
      National Cheng Kung University, Tainan, Taiwan
    • Year and Date
      2017-02-13 – 2017-02-15
    • Int'l Joint Research
  • [Presentation] Novel Liquid Crystals with 1,4-Dioxane Unit Showing Anomalously High Dielectric Permittivity over 10,0002017

    • Author(s)
      Hiroya Nishikawa, Kazuya Shiroshita, Hiroki Higuchi, Yasushi Okumura, Yasuhiro Haseba, Shin-ichi Yamamoto, Koki Sago, and Hirotsugu Kikuchi
    • Organizer
      The 3rd Asian Conference on Liquid Crystals
    • Place of Presentation
      National Cheng Kung University, Tainan, Taiwan
    • Year and Date
      2017-02-13 – 2017-02-15
    • Int'l Joint Research
  • [Presentation] Weak Anchoring Interface Inducing Acrylate Copolymer Designs for Highperformance Polymer Stabilized Blue Phase Liquid Crystal Displays2017

    • Author(s)
      K. Rijeesh, H. Higuchi, Y. Okumura, J. Yamamoto, and H. Kikuchi
    • Organizer
      The 3rd Asian Conference on Liquid Crystals
    • Place of Presentation
      National Cheng Kung University, Tainan, Taiwan
    • Year and Date
      2017-02-13 – 2017-02-15
    • Int'l Joint Research
  • [Presentation] Synthesis and Characterization of Biphenanthrene Derivatives as Chiral Dopants to Induce A Helical Structure in Liquid Crystals2017

    • Author(s)
      D. Yoshizawa, H. Higuchi, Y. Okumura, and H. Kikuchi
    • Organizer
      The 3rd Asian Conference on Liquid Crystals
    • Place of Presentation
      National Cheng Kung University,Tainan, Taiwan
    • Year and Date
      2017-02-13 – 2017-02-15
    • Int'l Joint Research
  • [Presentation] Synthesis and Properties of Various 6,6’-Substituted Binaphthy Type Chiral Dopants”2017

    • Author(s)
      Yu Narazaki, Hiroya Nishikawa, Hiroki Higuchi, Yasushi Okumura, and Hirotsugu Kikuchi
    • Organizer
      The 3rd Asian Conference on Liquid Crystals
    • Place of Presentation
      National Cheng Kung University,Tainan, Taiwan
    • Year and Date
      2017-02-13 – 2017-02-15
    • Int'l Joint Research
  • [Presentation] Weak Surface Anchoring of A Nematic Liquid Crystal on A Uniquely Designed Acrylate Polymer2016

    • Author(s)
      Rijeesh Kizhakidathazhath, Hiroki Higuchi, Yasushi Okumura, and Hirotsugu Kikuchi
    • Organizer
      The 11th SPSJ International Polymer Conference
    • Place of Presentation
      福岡国際会議場, Fukuoka, Japan
    • Year and Date
      2016-12-13 – 2016-12-16
    • Int'l Joint Research
  • [Presentation] Fluorescence Imaging of Director Spatial Distribution in Liquid Crystal Blue Phases Using Dichroic Dyes with Confocal Laser Scanning Microscope2016

    • Author(s)
      Takaaki Narita, Yasushi Okumura, Jun-ichi Fukuda, Hiroki Higuchi, and Hirotsugu Kikuchi
    • Organizer
      The 11th SPSJ International Polymer Conference
    • Place of Presentation
      福岡国際会議場, Fukuoka, Japan
    • Year and Date
      2016-12-13 – 2016-12-16
    • Int'l Joint Research
  • [Presentation] Transmission Electron Microscope Observation of Polymer Aggregation Structure in Polymer-stabilized Blue Phase2016

    • Author(s)
      Shinji Shindo, Yasushi Okumura, Takeshi Higuchi, Hiroshi Jinnai, Hiroki Higuchi, and Hirotsugu Kikuchi,
    • Organizer
      The 11th SPSJ International Polymer Conference
    • Place of Presentation
      福岡国際会議場, Fukuoka, Japan
    • Year and Date
      2016-12-13 – 2016-12-16
    • Int'l Joint Research
  • [Presentation] A High Dielectric Anisotropy Liquid Crystal with SHG Activity2016

    • Author(s)
      Kazuya Shiroshita, Hiroya Nishikawa, Hiroki Higuchi, Yasushi Okumura, and Hirotsugu Kikuchi
    • Organizer
      The 11th SPSJ International Polymer Conference
    • Place of Presentation
      福岡国際会議場, Fukuoka, Japan
    • Year and Date
      2016-12-13 – 2016-12-16
    • Int'l Joint Research
  • [Presentation] Helical Twisting Behavior of Biphenanthrene-type Chiral Dopants in Liquid Crystal Phase2016

    • Author(s)
      Daisuke Yoshizawa, Hiroki Higuchi, Yasushi Okumura, and Hirotsugu Kikuchi
    • Organizer
      The 11th SPSJ International Polymer Conference
    • Place of Presentation
      福岡国際会議場, Fukuoka, Japan
    • Year and Date
      2016-12-13 – 2016-12-16
    • Int'l Joint Research
  • [Presentation] Reversible Photoswitching between Chiral 1D and 3D Structures by Azobased Binaphthyl Chiral Dopant2016

    • Author(s)
      Hiroya Nishikawa, Hiroki Higuchi, Daigo Mochizuki, Yasushi Okumura, and Hirotsugu Kikuchi
    • Organizer
      26th International Liquid Crystal Conference
    • Place of Presentation
      福岡国際会議場, Fukuoka, Japan
    • Year and Date
      2016-12-13 – 2016-12-16
    • Int'l Joint Research
  • [Presentation] 無機ナノシート水分散液の等方相-液晶相転移臨界濃度近傍における電気光学特性2016

    • Author(s)
      村泰志, 立志真樹, 宮元展義, 樋口博紀, 菊池裕嗣
    • Organizer
      第65回高分子討論会
    • Place of Presentation
      神奈川大学, 横浜
    • Year and Date
      2016-09-14 – 2016-09-16
  • [Presentation] 高い誘電率とSHG活性を示す液晶2016

    • Author(s)
      城下和也, 西川浩矢, 樋口博紀, 奥村泰志, 菊池裕嗣
    • Organizer
      第65回高分子討論会
    • Place of Presentation
      神奈川大学, 横浜
    • Year and Date
      2016-09-14 – 2016-09-16
  • [Presentation] 誘電率1000以上を示す液晶性化合物2016

    • Author(s)
      城下和也, 西川浩矢, 樋口博紀, 奥村泰志, 長谷場康宏, 山本真一, 佐郷弘毅, 菊池裕嗣
    • Organizer
      2016年日本液晶学会討論会
    • Place of Presentation
      大阪工業大学, 大阪
    • Year and Date
      2016-09-05 – 2016-09-07
  • [Presentation] Three-dimensional Observation of Lattice Structure in Cholesteric Blue Phases by Using Confocal Laser Scanning Microscopy2016

    • Author(s)
      Yasushi Okumura, Ying Wen, Hiroki Higuchi, and Hirotsugu Kikuchi
    • Organizer
      26th International Liquid Crystal Conference
    • Place of Presentation
      Kent State University, Kent, USA
    • Year and Date
      2016-07-31 – 2016-08-05
    • Int'l Joint Research
  • [Presentation] A Liquid Crystal with Anomalously High Dielectric Permittivity2016

    • Author(s)
      Kazuya Shiroshita, Hiroya Nishikawa, Hiroki Higuchi, Yasushi Okumura, Yasuhiro Haseba, Shin-ichi Yamamoto, Koki Sago, and Hirotsugu Kikuchi
    • Organizer
      8th Japanese-Italian Liquid Crystal Workshop
    • Place of Presentation
      京都市国際交流会館, Kyoto, Japan
    • Year and Date
      2016-07-05 – 2016-07-07
    • Int'l Joint Research
  • [Presentation] コレステリックブルー相における部分と全体2016

    • Author(s)
      菊池裕嗣
    • Organizer
      第20回液晶化学研究会シンポジウム
    • Place of Presentation
      東京大学, 東京
    • Year and Date
      2016-07-04 – 2016-07-05
    • Invited
  • [Presentation] Electro-optical properties of polymer-stabilized blue phase I and II prepared by gradient stabilization2016

    • Author(s)
      Yasushi Okumura, Shunichi Kimura, Hiroki Higuchi, and Hirotsugu Kikuchi
    • Organizer
      第65回高分子学会年次大会
    • Place of Presentation
      神戸国際会議場, 神戸
    • Year and Date
      2016-05-25 – 2016-05-27
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] LIQUID CRYSTAL DEVICE2017

    • Inventor(s)
      菊池裕嗣ら
    • Industrial Property Rights Holder
      菊池裕嗣ら
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      出願番号15/432928
    • Filing Date
      2017-02-15
    • Overseas

URL: 

Published: 2018-01-16  

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