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Responsive soft materials that can change their reflection colors with electrical stimuli

Research Project

Project/Area Number 16K14062
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Organic and hybrid materials
Research InstitutionThe University of Tokyo

Principal Investigator

ITOH Yoshimitsu  東京大学, 大学院工学系研究科(工学部), 講師 (00531071)

Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywordsコレステリック液晶 / キラルドーパント / 反射型ディスプレイ / 電子ペーパー / 構造色 / 電気化学応答 / 液晶 / 電場応答
Outline of Final Research Achievements

Liquid crystalline displays are known to have high power consumption rate. Reflective displays are expected to overcome this issue as they utilize environmental light rather than backlight. Cholesteric liquid crystals are one of the strong candidate to be applied for reflective displays. In this research, we have developed new type of dopants for cholesteric liquid crystals that can realize the electrical modulation of the reflection color. By using these dopants, we have succeeded in developing a device whose modulated color can be memorized, and a device that can be driven quickly by low voltage.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • Research Products

    (17 results)

All 2018 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (1 results) (of which Peer Reviewed: 1 results,  Acknowledgement Compliant: 1 results) Presentation (12 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results) Patent(Industrial Property Rights) (2 results)

  • [Int'l Joint Research] ウプサラ大学(スウェーデン)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] 延世大学(韓国)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Jumping Crystals of Pyrene Tweezers: Crystal-to-Crystal Transition Involving π/π-to-CH/π Assembly Mode Switching2017

    • Author(s)
      Yoshiki Shibuya, Yoshimitsu Itoh, Takuzo Aida
    • Journal Title

      Chemistry An Asian Journal

      Volume: 12 Issue: 7 Pages: 811-815

    • DOI

      10.1002/asia.201700083

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Redox Responsive Chiral Dopant for Color-Modulable Cholesteric Liquid Crystals2018

    • Author(s)
      徳永翔一、伊藤喜光、相田卓三
    • Organizer
      日本化学会第98回春期年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Molecular Assembling Behavior on Biomimetic Surface under Electrical Perturbation2017

    • Author(s)
      伊藤喜光
    • Organizer
      日本化学会第97回春期年会
    • Place of Presentation
      慶應義塾大学日吉キャンパス (神奈川県・横浜市)
    • Year and Date
      2017-03-19
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Nematic-to-Columnar Liquid Crystalline Phase Transformation by Supramolecularly Polymerizable Discotic Dopant2017

    • Author(s)
      矢野慧一、伊藤喜光、荒岡史人、相田卓三
    • Organizer
      日本化学会第97回春期年会
    • Place of Presentation
      慶應義塾大学日吉キャンパス (神奈川県・横浜市)
    • Year and Date
      2017-03-18
    • Related Report
      2016 Research-status Report
  • [Presentation] 多価イオン液体による高キャパシタンスの実現2017

    • Author(s)
      水谷渡、松本道生、外池里奈、清水直、伊藤喜光、渡邉正義、岩佐義宏、相田卓三
    • Organizer
      日本化学会第97回春期年会
    • Place of Presentation
      慶應義塾大学日吉キャンパス (神奈川県・横浜市)
    • Year and Date
      2017-03-18
    • Related Report
      2016 Research-status Report
  • [Presentation] 光励起状態における[4n]アヌレン類の動的挙動とそのエネルギー論2017

    • Author(s)
      上田倫久、伊藤喜光、Kjell Jorner、Young Mo Sung、森直、Dongho Kim、Henrik Ottosson、相田卓三
    • Organizer
      日本化学会第97回春期年会
    • Place of Presentation
      慶應義塾大学日吉キャンパス (神奈川県・横浜市)
    • Year and Date
      2017-03-18
    • Related Report
      2016 Research-status Report
  • [Presentation] Dynamic Solid-State Materials with Tweezers-Like Molecular Scaffolds2017

    • Author(s)
      渋谷宜己、伊藤喜光、相田卓三
    • Organizer
      日本化学会第97回春期年会
    • Place of Presentation
      慶應義塾大学日吉キャンパス (神奈川県・横浜市)
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] Effect of Ion Pairing Strength by Hydrophobic Interface in Subnanoscale Distance2017

    • Author(s)
      Yoshimitsu Itoh, Shuo Chen, Takuzo Aida
    • Organizer
      Biophysical Society 61st Annual Meeting
    • Place of Presentation
      ニューオリンズ(アメリカ)
    • Year and Date
      2017-02-15
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 電気化学反応を利用したコレステリック液晶の反射色制御2017

    • Author(s)
      徳永翔一、伊藤喜光、相田卓三
    • Organizer
      第66回高分子学会年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Electrochemical Modulation of Cholesteric Liquid Crystalline Device2017

    • Author(s)
      Shoichi Tokunaga, Yoshimitsu Itoh, Takuzo Aida
    • Organizer
      Gordon Research Conference (Liquid Crystals)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Nematic-to-Columnar Geometrical Transformation of Liquid Crystalline Assembly by Supramolecular Polymerization of Discotic Dopant2016

    • Author(s)
      Keiichi Yano, Yoshimitsu Itoh, Fumito Araoka, Takuzo Aida
    • Organizer
      The 11th SPSJ International Polymer Conference (IPC 2016)
    • Place of Presentation
      福岡国際会議場 (福岡県・博多市)
    • Year and Date
      2016-12-16
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Nanoscale Interactions at Self-Assembled Monolayers (1): Hydrophobic Modulation of Salt Bridges2016

    • Author(s)
      Yoshimitsu Itoh, Shuo Chen, Takuzo Aida
    • Organizer
      第65回高分子学会年次大会
    • Place of Presentation
      神戸国際会議場 (兵庫県・神戸市)
    • Year and Date
      2016-05-27
    • Related Report
      2016 Research-status Report
  • [Presentation] Nanoscale Interactions at Self-Assembled Monolayers (2): Investigation of Surface Wetting Kinetics2016

    • Author(s)
      Eric Scott Silver, Hao Xing, Shuo Chen, Yoshimitsu Itoh, Takuzo Aida
    • Organizer
      第65回高分子学会年次大会
    • Place of Presentation
      神戸国際会議場 (兵庫県・神戸市)
    • Year and Date
      2016-05-27
    • Related Report
      2016 Research-status Report
  • [Patent(Industrial Property Rights)] 新規キラルドーパント及び液晶組成物2018

    • Inventor(s)
      相田卓三、伊藤喜光、徳永翔一
    • Industrial Property Rights Holder
      東京大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2018-038836
    • Filing Date
      2018
    • Related Report
      2017 Annual Research Report
  • [Patent(Industrial Property Rights)] 電気二重層キャパシタ用の非水系電解液2017

    • Inventor(s)
      相田卓三、伊藤喜光、水谷渡
    • Industrial Property Rights Holder
      相田卓三、伊藤喜光、水谷渡
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2017-067549
    • Filing Date
      2017-03-30
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2019-03-29  

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