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Investigation of crystallization behavior of molecules in liquid crystal solvent

Research Project

Project/Area Number 20K21154
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 30:Applied physics and engineering and related fields
Research InstitutionOsaka University

Principal Investigator

Yoshida Hiroyuki  大阪大学, 大学院工学研究科, 講師 (80550045)

Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2022: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords液晶 / 結晶化 / 配向 / トポロジカル欠陥 / パターン配向 / 配向制御
Outline of Research at the Start

生活を支える半導体から医薬品まで、結晶性材料は社会の様々な場所で用いられており、高品質な結晶を作製する方法を見出すことは重要です。溶液成長法は重要な結晶成長法の一つであり、成長条件の工夫によって技術が発展してきましたが、これまでの結晶成長では、用いられる溶媒は等方的なものがほとんどでした。本研究では、液晶が分子の配向秩序と流動性を兼ね備えた物質であることに着目し、液状でありながら構造をもつ「構造化溶媒」としての液晶の性質を探索します。

Outline of Final Research Achievements

Crystalline materials have uses in practically every aspect of society, and thus the search for methods to prepare high quality crystals is important. In this work, we investigated the effect of liquid crystallinity in the solvent of the target solute. We found that different crystallization behavior results due to the liquid crystallinity, and that its behavior is affected the pattern imprinted on the substrate surfaces.

Academic Significance and Societal Importance of the Research Achievements

これまでの多くの研究では結晶化させる際の溶媒として等方的な液体が用いられてきたが、本研究では、溶媒のもつ分子配列が結晶化挙動に影響を与えることを示した点で意義深い。液晶は固体と液体の中間に存在する物質の状態であるが、液晶性を発現する材料と液晶に溶解性を示す材料の組み合わせは無数に考えられる。溶媒と溶質の相互作用に分子配向という自由度を加えることにより、結晶化学の新しい展開が期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (16 results)

All 2022 2021 Other

All Int'l Joint Research (4 results) Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Int'l Joint Research] 台湾国立台北科技大学(その他の国・地域(台湾))

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] 台湾台北科学技術大学(その他の国・地域)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] ソルボンヌ大学(フランス)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] 台湾国立台北科学技術大学(その他の国・地域)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Photo-switching behaviour in liquid crystalline materials incorporating a non-planar dithienylcyclopentene core and their birefringence properties2022

    • Author(s)
      Chen Hsiuhui、Yang Haochun、Kuo Hanwen、Ko Weiting、Uchida Kingo、Yoshida Hiroyuki
    • Journal Title

      Liquid Crystals

      Volume: 49 Issue: 11 Pages: 1475-1487

    • DOI

      10.1080/02678292.2022.2044529

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
  • [Journal Article] Three-dimensional lattice deformation of blue phase liquid crystals under electrostriction2022

    • Author(s)
      Zhang Yuxian、Yoshida Hiroyuki、Chu Fan、Guo Yu-Qiang、Yang Zhou、Ozaki Masanori、Wang Qiong-Hua
    • Journal Title

      Soft Matter

      Volume: 18 Issue: 17 Pages: 3328-3334

    • DOI

      10.1039/d2sm00244b

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Probing a microviscosity change at the nematic-isotropic liquid crystal phase transition by a ratiometric flapping fluorophore2022

    • Author(s)
      Kimura Ryo、Kitakado Hidetsugu、Yamakado Takuya、Yoshida Hiroyuki、Saito Shohei
    • Journal Title

      Chemical Communications

      Volume: 58 Issue: 13 Pages: 2128-2131

    • DOI

      10.1039/d1cc06111a

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Tunable polarization volume gratings based on blue phase liquid crystals2022

    • Author(s)
      Cho SeongYong、Yoshida Hiroyuki、Ozaki Masanori
    • Journal Title

      Optics Express

      Volume: 30 Issue: 2 Pages: 1607-1607

    • DOI

      10.1364/oe.448301

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Remarkable Increase of Fluorescence Quantum Efficiency by Cyano Substitution on An ESIPT Molecule 2-(2-Hydroxyphenyl)benzothiazole: Highly Luminescent Liquid Crystal Dopant2021

    • Author(s)
      Tsuneaki Sakurai, Masaya Kobayashi, Hiroyuki Yoshida, Masaki Shimizu
    • Journal Title

      Crystals

      Volume: 11 Issue: 9 Pages: 1105-1105

    • DOI

      10.3390/cryst11091105

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] In Situ Optical Characterization of Twinning in Liquid Crystalline Blue Phases2021

    • Author(s)
      Zhang Yuxian、Yoshida Hiroyuki、Cho SeongYong、Fukuda Jun-ichi、Ozaki Masanori
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: 13 Issue: 30 Pages: 36130-36137

    • DOI

      10.1021/acsami.1c06873

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Directed self-assembly of soft 3D photonic crystals for holograms with omnidirectional circular-polarization selectivity2021

    • Author(s)
      Cho SeongYong、Takahashi Misaki、Fukuda Jun-ichi、Yoshida Hiroyuki、Ozaki Masanori
    • Journal Title

      Communications Materials

      Volume: 2 Issue: 1 Pages: 39-39

    • DOI

      10.1038/s43246-021-00146-x

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Science and technology in liquid crystals with patterned alignment2022

    • Author(s)
      吉田浩之
    • Organizer
      Physics Colloquium Webinar Series Institute Technologi Bandung
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ESIPT型有機蛍光体の媒質中における蛍光量子収率向上のための分子設計2022

    • Author(s)
      小林雅弥、櫻井庸明、吉田浩之、清水正毅
    • Organizer
      日本化学会 第102春季年会(2022)
    • Related Report
      2021 Research-status Report
  • [Presentation] ネマティック液晶に分散させた蛍光年度プローブの挙動解析2022

    • Author(s)
      木村僚、北鹿渡秀嗣、山角拓也、吉田浩之、斎藤尚平
    • Organizer
      日本化学会 第102春季年会(2022)
    • Related Report
      2021 Research-status Report
  • [Presentation] 有機液晶素子におけるソリトン構造の制御2021

    • Author(s)
      吉田浩之
    • Organizer
      新学術領域研究「量子液晶の物性科学」第4回QLC若手コロキウム
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] ネマティック液晶のツイストウォールを利用した点欠陥の生成2021

    • Author(s)
      中山雄介、吉田浩之、鍛冶静雄、横山知郎、尾﨑雅則
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Research-status Report

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Published: 2020-08-03   Modified: 2024-01-30  

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