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Synthesis of Helical Conjugated Polymers in External Force-Responsive Chiral Liquid Crystal Field and Control of Their Optoelectronic Properties

Research Project

Project/Area Number 20H02818
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 35030:Organic functional materials-related
Research InstitutionRitsumeikan University

Principal Investigator

Akagi Kazuo  立命館大学, 総合科学技術研究機構, 教授 (20150964)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2023: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2022: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2021: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2020: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Keywordsキラル液晶 / 不斉反応場 / 外部刺激応答 / 共役ポリマー / ヘリシティ制御
Outline of Research at the Start

ポリマーの不斉合成は、次世代の電子的、光学的および薬理的機能を有するキラル物質を開発する上で根幹をなすものである。しかし、ポリマーの自己組織体や集積体におけるキラリティ制御の手法はいまだ確立しておらず、キラル反応場の動的制御に至っては未開拓である。
本研究では、温度や光に応答してキラル反転する化合物をネマチック液晶に添加して、外部刺激でキラリティが変わるキラル液晶場を構築する。この液晶場で不斉重合を行い、従来にない高機能のキラルポリマー材料を創製する。
本研究を通じて、外部刺激によりキラリティを動的に制御できる液晶反応場を開発し、「液晶と共役ポリマーの融合化学」の学術的展開を図る。

Outline of Final Research Achievements

We synthesized chiral compounds that reversibly invert chirality in response to external stimuli such as temperature and light, and subsequently prepared chiral liquid crystals responsive to external stimuli by adding them to nematic liquid crystals as chiral dopants. Using the chiral liquid crystal as an asymmetric reaction field, helical conjugated polymers with electronic and optical functions were synthesized. This study has led to the construction of an asymmetric reaction field in which chirality can be dynamically controlled by external stimuli, as well as the academic development of the asymmetric synthesis of conjugated polymers.

Academic Significance and Societal Importance of the Research Achievements

本研究において、化学的にも光照射に対しても捻れ力を安定的に保持し、不斉重合溶媒として使用に耐え得る、新規の外部刺激応答性キラル液晶を合成した。また、キラル液晶を用いた不斉反応場を構築することで、一次構造から高次構造に至るまで精緻に制御されたヘリカルポリマーを得ることを可能とした。基礎および応用上の観点からキラリティやらせん構造を有する高機能性共役ポリマーの合成法を開発し、その進展を図ったことに意義がある。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (58 results)

All 2024 2023 2022 2021 2020 Other

All Journal Article (8 results) (of which Peer Reviewed: 6 results,  Open Access: 8 results) Presentation (39 results) (of which Int'l Joint Research: 23 results,  Invited: 15 results) Book (7 results) Remarks (4 results)

  • [Journal Article] Helicity Control of Circularly Polarized Luminescence from Aromatic Conjugated Copolymers and Their Mixture Using Reversibly Photoinvertible Chiral Liquid Crystals2024

    • Author(s)
      Yoshida Satoru、Morikawa Santa, Ueda Kenta, Kaneko Kosuke, Hanasaki Tomonori, Akagi Kazuo
    • Journal Title

      ACS Applied Materials&Interfaces

      Volume: 16 Issue: 3 Pages: 3991-4002

    • DOI

      10.1021/acsami.3c15512

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Chiroptical Properties of Helical Aromatic Conjugated Polymers Synthesized by Electrochemical Polymerization in Chiral Nematic Liquid Crystals2023

    • Author(s)
      Satoru Yoshida, Hiroki Emi, Hiromasa Yamamoto, Kosuke Kaneko, Tomonori Hanasaki, Kazuo Akagi
    • Journal Title

      J. Adv. Mater. Sci. Eng.

      Volume: 3 Pages: 1-10

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Particle dispersion system consisting of helically assembled liquid crystalline poly(para-phenylene)derivatives with reproducible chiroptical properties2023

    • Author(s)
      Keita Horie, Shunsuke Kondo, Kazuo Akagi
    • Journal Title

      Journal of Materials Chemistry C

      Volume: 11 Issue: 3 Pages: 943-952

    • DOI

      10.1039/d2tc03747e

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 超階層構造制御で伝える、伝わる2022

    • Author(s)
      赤木和夫
    • Journal Title

      高分子

      Volume: 70 Pages: 592-592

    • Related Report
      2021 Annual Research Report
    • Open Access
  • [Journal Article] 温度によるキラル反転が可能な不斉反応場を用いた共役系高分子のらせん構造制御2022

    • Author(s)
      堀江慶太,山下智弘,赤木和夫
    • Journal Title

      液晶

      Volume: 26 Pages: 46-52

    • Related Report
      2021 Annual Research Report
    • Open Access
  • [Journal Article] Helical Network Polymers Embodying High Dissymmetry Factors in Circularly Polarized Luminescence: Photocrosslinking Polymerization of Acrylate Derivatives in Chiral Smectic Liquid Crystals2021

    • Author(s)
      Yamamoto Hiromasa、Inagaki Takuya、Park Jinwoo、Yoshida Satoru、Kaneko Kosuke、Hanasaki Tomonori、Akagi Kazuo
    • Journal Title

      Macromolecules

      Volume: 54 Issue: 19 Pages: 8977-8986

    • DOI

      10.1021/acs.macromol.1c01146

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Chiral Reaction Field with Thermally Invertible Helical Sense that Controls the Helicities of Conjugated Polymers2020

    • Author(s)
      Akagi Kazuo、Yamashita Tomohiro、Horie Keita、Goh Munju、Yamamoto Masaharu
    • Journal Title

      Advanced Materials

      Volume: 32 Issue: 12 Pages: 1906665-1906673

    • DOI

      10.1002/adma.201906665

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Photoinvertible Chiral Liquid Crystal that Affords Helicity‐Controlled Aromatic Conjugated Polymers2020

    • Author(s)
      Yoshida Satoru、Morikawa Santa、Ueda Kenta、Hidaka Masatomo、Kaneko Kosuke、Kaneko Kimiyoshi、Hanasaki Tomonori、Akagi Kazuo
    • Journal Title

      Advanced Optical Materials

      Volume: 8 Issue: 20

    • DOI

      10.1002/adom.202000936

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Synthesis and Morphological Control of Helical Polymers2023

    • Author(s)
      Kazuo Akagi
    • Organizer
      Annual World Congress of Smart Materials- 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Brief introduction of the JST-CREST project “Creation of Innovative Basic Technologies for Circularly Polarized Luminescence Materials Development”2023

    • Author(s)
      Kazuo Akagi
    • Organizer
      JST-OIST Joint Symposium on Circularly Polarized Luminescence and the Related Phenomena
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Synthesis and Chiroptical Properties of Helical Conjugated Polymers2023

    • Author(s)
      Kazuo Akagi
    • Organizer
      Symposium on Molecular Chirality 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] キラルネマチック液晶場で誘起する円偏光発光性蛍光物質の合成とキラル光学特性2023

    • Author(s)
      藤田悠希、堀江慶太、金子光佑、花﨑知則、赤木和夫
    • Organizer
      日本液晶学会討論会
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] キラル液晶場でのRGB円偏光発光特性を有するらせん状架橋ポリマーの合成とそのキラル発光特性2023

    • Author(s)
      山本大誠、吉田悟、堀江慶太、金子光佑、花﨑知則、赤木和夫
    • Organizer
      日本液晶学会討論会
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Helicity Control of White Circularly Polarized Luminescence of Mixed Aromatic Conjugated Polymers by Photoresponsive Chiral Nematic Liquid Crystals2023

    • Author(s)
      Satoru Yoshida, Santa Morikawa, Kosuke Kaneko, Tomonori Hanasaki, Kazuo Akagi
    • Organizer
      20th Optics of Liquid Crystals Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Synthesis of Helical Network Polymers Exhibiting RGB Circularly Polarized Luminescence in Chiral Liquid Crystals2023

    • Author(s)
      Hiromasa Yamamoto, Satoru Yoshida, Keita Horie, Kosuke Kaneko, Tomonori Hanasaki, Kazuo Akagi
    • Organizer
      20th Optics of Liquid Crystals Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Synthesis and Chiroptical Properties of Helical Conjugated Polymers2023

    • Author(s)
      Kazuo Akagi
    • Organizer
      Workshop: Joint France-Japan Symposium on Circularly Polarized Luminescence and Related Phenomena
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Synthesis and Chiroptical Properties of Helical Conjugated Polymers2023

    • Author(s)
      Kazuo Akagi
    • Organizer
      International Symposium on Circularly Polarized Luminescence and Related Phenomena 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 分子相互作用系における電子・振動状態の化学的描像化と分光学的性質2023

    • Author(s)
      赤木和夫
    • Organizer
      立命館大学公開セミナー
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Chiroptical Helical Conjugated Polymers synthesized in Chiral Liquid Crystal Field2023

    • Author(s)
      Kazuo Akagi
    • Organizer
      International CPL and CPEL Conference 2023 (ICCC 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Helicity Control of White Circularly Polarized Luminescence of Mixed Aromatic Conjugated Polymers by Photoresponsive Chiral Nematic Liquid Crystals2023

    • Author(s)
      Satoru Yoshida, Santa Morikawa, Kosuke Kaneko, Tomonori Hanasaki, Kazuo Akagi
    • Organizer
      International CPL and CPEL Conference 2023 (ICCC 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Synthesis of Helical Network Polymers in a Chiral Nematic Liquid Crystal and Evaluation of Luminescence Dissymmetry Factors2023

    • Author(s)
      Hiromasa Yamamoto, Satoru Yoshida, Keita Horie, Kosuke Kaneko, Tomonori Hanasaki, Kazuo Akagi
    • Organizer
      International CPL and CPEL Conference 2023 (ICCC 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Synthesis of Helical Aromatic Conjugated Polymers in Chiral Liquid Crystal Reaction Fields and Circularly Polarized Luminescence2023

    • Author(s)
      Hiroki Emi, Satoru Yoshida, Hiromasa Yamamoto, Kosuke Kaneko, Tomonori Hanasaki, Kazuo Akagi
    • Organizer
      International CPL and CPEL Conference 2023 (ICCC 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Synthesis of Fluorescent Fluorene Derivative Exhibiting Circularly Polarized Luminescence Induced by Chiral Nematic Liquid Crystals2023

    • Author(s)
      Yuki Fujita, Keita Horie, Kosuke Kaneko, Tomonori Hanasaki, Kazuo Akagi
    • Organizer
      International CPL and CPEL Conference 2023 (ICCC 2023)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 蛍光性フルオレン誘導体の合成とキラルネマチック液晶により誘起される円偏光発光の特性2023

    • Author(s)
      藤田悠希、堀江慶太、金子光佑、花﨑知則、赤木和夫
    • Organizer
      日本化学会第103春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] らせん状共役ポリマーの合成とキラル光学特性2023

    • Author(s)
      赤木和夫
    • Organizer
      日本磁気学会・第87スピントロニクス専門研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Mechanism of chirality induction in photoresponsive chiral nematic liquid crystals2022

    • Author(s)
      Satoru Yoshida, Santa Morikawa, Kenta Ueda, Kosuke Kaneko, Tomonori Hanasaki, Kazuo Akagi
    • Organizer
      28th International Liquid Crystal Conference (ILCC2022)(Online)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 究め極めたい螺旋の道 ーらせん状共役ポリマーと円偏光発光2022

    • Author(s)
      赤木和夫
    • Organizer
      ミニシンポジウム 「分子の形と機能」
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] キラル液晶を不斉場とする円偏光発光体の合成と展開2022

    • Author(s)
      赤木和夫、堀江慶太
    • Organizer
      第4回CREST研究推進会議
    • Related Report
      2022 Annual Research Report
  • [Presentation] 光応答性キラル反転液晶を用いた共役ポリマーの誘起円偏光発光の光制御2022

    • Author(s)
      吉田悟、森川陽太、金子光佑、花崎知則、赤木和夫
    • Organizer
      第71回高分子学会年次大会 (オンライン発表)
    • Related Report
      2022 Annual Research Report
  • [Presentation] キラル液晶場での芳香族ヘリカル共役ポリマーの合成と円偏光発光特性2022

    • Author(s)
      江見大樹、吉田悟、山本大誠、金子光佑、花﨑知則、赤木和夫
    • Organizer
      第71回高分子学会年次大会 (オンライン発表)
    • Related Report
      2022 Annual Research Report
  • [Presentation] キラル液晶場でのヘリカルネットワークポリマーの合成とその円偏光発光特性2022

    • Author(s)
      赤木和夫、堀江慶太
    • Organizer
      第5回CREST研究推進会議
    • Related Report
      2022 Annual Research Report
  • [Presentation] キラル液晶場に基づくらせん状凝集構造を有する架橋ポリマーの合成とその円偏光発光特性の評価2022

    • Author(s)
      山本大誠、稲垣拓也、Park Jinwoo、吉田悟、堀江慶太、金子光佑、花﨑知則、赤木和夫
    • Organizer
      日本液晶討論会(オンライン発表)
    • Related Report
      2022 Annual Research Report
  • [Presentation] 円偏光発光材料の開発に向けた革新的基盤技術の創成2022

    • Author(s)
      赤木和夫
    • Organizer
      JST-CREST「革新光」領域会議
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高分子ネマチック液晶を用いたCPL フィルムの開発2022

    • Author(s)
      堀江慶太、赤木和夫
    • Organizer
      第6回CREST研究推進会議
    • Related Report
      2022 Annual Research Report
  • [Presentation] Synthesis and Chiroptical Properties of Helical Conjugated Polymers2022

    • Author(s)
      Kazuo Akagi
    • Organizer
      International CREST-CPL Conference (ICCC)-2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 円偏光発光(CPL)とヘリカル共役ポリマー2022

    • Author(s)
      赤木和夫
    • Organizer
      立命館大学・公開セミナー
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Circularly Polarized Luminescence of Helical Aromatic Conjugated Polymers Synthesized in Chiral Liquid Crystal Field2022

    • Author(s)
      Hiroki Emi, Satoru Yoshida, Hiromasa Yamamoto, Kosuke Kaneko, Tomonori Hanasaki, Kazuo Akagi
    • Organizer
      International CREST-CPL Conference (ICCC)-2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Chiroptical and Helical Network Polymers Synthesized through Photocrosslinking Polymerizations in Chiral Smectic Liquid Crystals2022

    • Author(s)
      Hiromasa Yamamoto, Takuya Inagaki, Jinwoo Park, Satoru Yoshida, Kosuke Kaneko, Tomonori Hanasaki, Kazuo Akagi
    • Organizer
      International CREST-CPL Conference (ICCC)-2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Photocontrol of Circularly Polarized Luminescence induced in Aromatic Conjugated Polymers using Photoinvertible Chiral Liquid Crystals2022

    • Author(s)
      Satoru Yoshida, Santa Morikawa, Kosuke Kaneko, Tomonori Hanasaki, Kazuo Akagi
    • Organizer
      International CREST-CPL Conference (ICCC)-2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Synthesis and Photophysical Properties of Anthracene Derivatives2022

    • Author(s)
      Kana Matsuki, Kosuke Kaneko, Satoru Yoshida, Kazuo Akagi, Tomonori Hanasaki
    • Organizer
      International CREST-CPL Conference (ICCC)-2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Helical Conjugated Polymers Synthesized in Chiral Liquid Crystal Reaction Field with Thermally Invertible Helical Sense2021

    • Author(s)
      Kazuo Akagi
    • Organizer
      International Chemical Congress of Pacific Basin Societies (Pacifichem)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 外部刺激応答性キラル液晶場でのヘリカル共役ポリマーの合成2021

    • Author(s)
      赤木和夫
    • Organizer
      CREST研究推進シンポジウム 〔オンライン〕
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 外部刺激応答性キラル液晶場でのヘリカル共役ポリマーの合成2021

    • Author(s)
      赤木和夫
    • Organizer
      CREST研究討論会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] キラルスメクチック液晶場でのヘリカルネットワークポリマーの合成とその円偏光発光特性の評価2021

    • Author(s)
      山本大誠, 稲垣拓也, Jinwoo Park, 吉田 悟, 金子光佑, 花崎知則, 赤木和夫
    • Organizer
      日本液晶学会・液晶討論会(オンライン)
    • Related Report
      2021 Annual Research Report
  • [Presentation] Synthesis of Helical Network Polymers Exhibiting Circularly Polarized Luminescence through Photo-crosslink Polymerization in Chiral Liquid Crystal Field2021

    • Author(s)
      Takuya Inagaki, Ken Kusunoki, Jinwoo Park, Hiromasa Yamamoto, Kosuke Kaneko, Tomonori Hanasaki, Kazuo Akag
    • Organizer
      International Chemical Congress of Pacific Basin Societies (Pacifichem) 2021(On-line)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Helicity Control of Poly(3,4-ethylenedioxythiophene)s using Photo-Invertible Chiral Liquid Crystal Field2021

    • Author(s)
      Satoru Yoshida, Masatomo Hidaka, Santa Morikawa, Kosuke Kaneko, Kimiyoshi Kaneko, Tomonori Hanasaki, Kazuo Akagi
    • Organizer
      International Chemical Congress of Pacific Basin Societies (Pacifichem) 2021(On-line)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 外部刺激によりキラル反転する液晶場でのヘリティ制御型共役ポリマーの合成とそのキラル光学特性2021

    • Author(s)
      赤木和夫
    • Organizer
      日本化学会・第101春季年会シンポジウム (オンライン)
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Book] Chiral Luminescence: From Molecules to Materials and Devices2024

    • Author(s)
      Kazuo Akagi (編集)、チャプター9 Keita Horie, Kazuo Akagi(分担執筆),チャプター16 Kosuke Kaneko, Hiromasa Yamamoto, Satoru Yoshida, Tomonori Hanasaki, Kazuo Akagi(分担執筆)
    • Total Pages
      992
    • Publisher
      Wiley VCH
    • Related Report
      2023 Annual Research Report
  • [Book] Encyclopedia of Polymers, Polymeric Materials, and Polymer Technology2023

    • Author(s)
      Kazuo Akagi(分担執筆)
    • Publisher
      CRC Press
    • Related Report
      2023 Annual Research Report
  • [Book] 高分子材料の事典(分担執筆 pp.586-587)2022

    • Author(s)
      赤木和夫
    • Total Pages
      630
    • Publisher
      朝倉書店
    • ISBN
      9784254252729
    • Related Report
      2022 Annual Research Report
  • [Book] 2020版薄膜作製応用ハンドブック2020

    • Author(s)
      赤木和夫 (分担執筆)
    • Total Pages
      1570
    • Publisher
      エヌ・ティー・エス
    • ISBN
      9784860436315
    • Related Report
      2020 Annual Research Report
  • [Book] 「基礎高分子科学 第2版」, 1章 高分子 歴史と展望2020

    • Author(s)
      赤木和夫(分担執筆)
    • Total Pages
      496
    • Publisher
      東京化学同人
    • ISBN
      9784807909629
    • Related Report
      2020 Annual Research Report
  • [Book] 高分子学会(編)基礎編(機能)電気・電子機能2020

    • Author(s)
      赤木和夫(分担執筆)
    • Publisher
      朝倉書店
    • Related Report
      2020 Annual Research Report
  • [Book] Polymers and Polymeric Composites: A References Series2020

    • Author(s)
      K. Akagi
    • Total Pages
      21
    • Publisher
      Springer Nature
    • ISBN
      9783642371790
    • Related Report
      2020 Annual Research Report
  • [Remarks] 研究室紹介

    • URL

      https://www.ritsumei.ac.jp/~akagi/akagi_hp_2014_ritsumei/index.html

    • Related Report
      2023 Annual Research Report
  • [Remarks] CRESTキラル発光(円偏光発光材料の開発に向けた革新的基盤技術の開発)

    • URL

      http://cplmaterial.org/

    • Related Report
      2023 Annual Research Report
  • [Remarks] 研究室HP

    • URL

      https://www.ritsumei.ac.jp/~akagi/akagi_hp_2014_ritsumei/member.html

    • Related Report
      2022 Annual Research Report
  • [Remarks] 研究室紹介

    • URL

      http://www.ritsumei.ac.jp/~akagi/akagi_hp_2014_ritsumei/member.html

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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