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Development of light and electric field-responsive novel ionic cholesteric liquid crystals

Research Project

Project/Area Number 16K17886
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Functional solid state chemistry
Research InstitutionHokkaido University

Principal Investigator

Kim Yuna  北海道大学, 電子科学研究所, 助教 (00648131)

Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords液晶 / キラルドーパント / 光異性化 / 電場
Outline of Final Research Achievements

In this project, ionic liquid crystals were synthesized exhibiting nematic phases near the room temperature and over a wide range of temperature. Next, ionic chiral azobenzene dopants with high helical twisting power were synthesized. The ionic cholesteric liquid crystals (CLC) were successfully obtained by doping the ionic chiral azobenzenes in several nematic liquid crystals including the dimer type ionic liquid crystal. The resultant CLC showed facile control of its helical pitch upon both UV/visible light irradiation and electric field, accompanying the switching of reflection colors as well as light scattering (shutter) properties.

Report

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

    (11 results)

All 2018 2017 2016 Other

All Int'l Joint Research (3 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (6 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results)

  • [Int'l Joint Research] Yonsei University/POSTECH(韓国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] ENS Cachan/Universite Paris-Saclay, Versailles(France)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Paris-Saclay Univ/Aix Marseille Univ(France)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Programmable dual electrochromism in azine linked conjugated polymer2017

    • Author(s)
      Han Minsu、Poduval Mithrabinda K.、Shin Haijin、Tamaoki Nobuyuki、Park Taiho、Kim Yuna、Kim Eunkyoung
    • Journal Title

      Optical Materials Express

      Volume: 7 Issue: 6 Pages: 2117-2117

    • DOI

      10.1364/ome.7.002117

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A helical naphthopyran dopant for photoresponsive cholesteric liquid crystals2017

    • Author(s)
      Yuna Kim, Michel Frigoli, Nicolas Vanthuynec, Nobuyuki Tamaoki
    • Journal Title

      Chemical Communications

      Volume: 53 Issue: 1 Pages: 200-203

    • DOI

      10.1039/c6cc08667e

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] An azine linked conjugated polymer for programmable dual electrochromism2018

    • Author(s)
      Y. Kim, M. Han, M. Poduval, T. Park, N. Tamaoki and E. Kim
    • Organizer
      日本化学会第98春季年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] A helical naphthopyran dopant for photoresponsive cholesteric liquid crystals2017

    • Author(s)
      Yuna Kim, Michel Frigoli, Nicolas Vanthuyne and Nobuyuki Tamaoki
    • Organizer
      日本化学会 第97回 春季年会
    • 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
      2017-03-16
    • Related Report
      2016 Research-status Report
  • [Presentation] Photoresponsive cholesteric liquid crystals for color and mechanical functions2017

    • Author(s)
      Yuna Kim
    • Organizer
      81st PRAGUE MEETING ON MACROMOLECULES
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Light-driven color and mechanical motion control based on chiral liquid crystals2017

    • Author(s)
      Yuna Kim
    • Organizer
      2017 RIES-CIS Symposium
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Photoresponsive Chiral Liquid Crystals for Color and Mechanical Functions2016

    • Author(s)
      Yuna Kim
    • Organizer
      The 17th RIES-HOKUDAI International Symposium
    • Place of Presentation
      Chateraisae Gateaux Kingdom, Sapporo, Hokkaido
    • Year and Date
      2016-12-13
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Azobenzene-based photoswitches for microscopic molecular reorganization within the helical superstructures2016

    • Author(s)
      Yuna Kim
    • Organizer
      The 14th International Conference on Frontiers of Polymers and Advanced Materials (ICFPAM2016)
    • Place of Presentation
      Daejeon, Korea
    • Year and Date
      2016-10-31
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2016-04-21   Modified: 2022-07-19  

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