• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Realization of a ferromagnet based on a highly oriented elemental arrangement in a liquid crystal

Research Project

Project/Area Number 19K22213
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 35:Polymers, organic materials, and related fields
Research InstitutionChiba University

Principal Investigator

Kohri Michinari  千葉大学, 大学院工学研究院, 准教授 (80512376)

Project Period (FY) 2019-06-28 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2019: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywordsホルミウム / ランタノイド元素 / 磁性液晶 / カラムナー液晶 / ランタノイド / 液晶 / 自己組織化 / 磁性
Outline of Research at the Start

常温で駆動する次世代磁気デバイス開発に向け、磁場を取り去った後も残留磁化を示す‘強磁性’を常温で発現する材料が重要である。我々は、新たな磁性体の開発に向け、高い磁性を示すランタノイド元素を複合した材料開発を行なっている。本研究では、自己組織化的に組み上がる液晶の秩序性を利用し、ランタノイド元素に高い配向秩序性を付与し、低エネルギープロセスで常温強磁性体を作製する新たな概念の確立に挑戦する。

Outline of Final Research Achievements

We are conducting research focusing on holmium, which has the highest magnetism among lanthanide elements, for the development of new soft magnetic materials. In this research, we aimed to use liquid crystal to create a material in which holmium is ordered and exhibits magnetism at room temperature. The complex prepared using holmium and β-diketone ligand spontaneously formed a columnar liquid crystal and showed excellent magnetic properties that instantly react with neodymium magnets at room temperature. We have succeeded in finding a guideline for the preparation of columnar assembled structures in which holmium is highly ordered in a low-energy process. These findings will be expected to lead to the preparation of materials with better magnetic properties in the future.

Academic Significance and Societal Importance of the Research Achievements

本研究期間においては、最終的な目的であった室温強磁性の発現には至らなかったが、分子設計により、低エネルギープロセスで元素を高秩序に配向したカラム状集合体構造の発現指針を見出すことができた。さらに、配位子の設計によって、カラム状液晶に加えて、ホルミウム中心元素とする双連続キュービック液晶を形成できる条件も合わせて見出した。今後これらのホルミウム含有液晶を基盤とする材料の詳細な設計により、より磁気特性に優れた材料の創出が期待される。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (23 results)

All 2021 2020 2019 Other

All Journal Article (9 results) (of which Peer Reviewed: 9 results) Presentation (12 results) (of which Invited: 1 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Full-Color Magnetic Nanoparticles Based on Holmium-Doped Polymers2020

    • Author(s)
      Kohaku Kotona、Inoue Mizuki、Kanoh Hirofumi、Taniguchi Tatsuo、Kishikawa Keiki、Kohri Michinari
    • Journal Title

      ACS Applied Polymer Materials

      Volume: 2 Issue: 5 Pages: 1800-1806

    • DOI

      10.1021/acsapm.0c00038

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Poly-β-Ketoester Particles as a Versatile Scaffold for Lanthanide-Doped Colorless Magnetic Materials2020

    • Author(s)
      Yamamoto Mikiya、Ando Koki、Inoue Mizuki、Kanoh Hirofumi、Yamagami Mai、Wakiya Takeshi、Iida Eiji、Taniguchi Tatsuo、Kishikawa Keiki、Kohri Michinari
    • Journal Title

      ACS Applied Polymer Materials

      Volume: 2 Issue: 6 Pages: 2170-2178

    • DOI

      10.1021/acsapm.0c00149

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nanogel particle-based lanthanide composites for transparent magnetic materials2019

    • Author(s)
      Kohri Michinari、Aoki Yukika、Kohaku Kotona、Kishikawa Keiki
    • Journal Title

      Materials Letters

      Volume: 254 Pages: 278-281

    • DOI

      10.1016/j.matlet.2019.07.090

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Acid-induced control of surface properties using a catecholic silane coupling reagent2019

    • Author(s)
      *M. Kohri, S. Irie, S. Yamazaki, K. Kohaku, T. Taniguchi, and K. Kishikawa
    • Journal Title

      Chem. Lett.

      Volume: 48 Issue: 6 Pages: 551-554

    • DOI

      10.1246/cl.190138

    • NAID

      130007659779

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ellipsoidal Artificial Melanin Particles as Building Blocks for Biomimetic Structural Coloration2019

    • Author(s)
      Kohri Michinari、Tamai Yuki、Kawamura Ayaka、Jido Keita、Yamamoto Mikiya、Taniguchi Tatsuo、Kishikawa Keiki、Fujii Syuji、Teramoto Naozumi、Ishii Haruyuki、Nagao Daisuke
    • Journal Title

      Langmuir

      Volume: 未定 Issue: 16 Pages: 5574-5580

    • DOI

      10.1021/acs.langmuir.9b00400

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Polarity-adjustable Columnar Liquid Crystalline Compound by Intermittent Voltage Application2019

    • Author(s)
      Ohno Takaya、Nagaoka Nozomi、Kohri Michinari、Taniguchi Tatsuo、Kishikawa Keiki
    • Journal Title

      Chemistry Letters

      Volume: 48 Issue: 4 Pages: 315-318

    • DOI

      10.1246/cl.180982

    • NAID

      130007624456

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Preparation of photochromic liquid core nanocapsules based on theoretical design2019

    • Author(s)
      Tsuru Yosuke、Kohri Michinari、Taniguchi Tatsuo、Kishikawa Keiki、Karatsu Takashi、Hayashi Masaki
    • Journal Title

      Journal of Colloid and Interface Science

      Volume: 547 Pages: 318-329

    • DOI

      10.1016/j.jcis.2019.04.008

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Artificial melanin particles: new building blocks for biomimetic structural coloration2019

    • Author(s)
      Kohri Michinari
    • Journal Title

      Polymer Journal

      Volume: 51 Issue: 11 Pages: 1127-1135

    • DOI

      10.1038/s41428-019-0231-2

    • NAID

      40022176636

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Does introduction of a bent tail stabilize biaxiality and lateral switching behavior of smectic A liquid crystal phases of rodlike molecules?2019

    • Author(s)
      C. Koga, M. Kohri, T. Taniguchi, and *K. Kishikawa
    • Journal Title

      J. Phys. Chem. B

      Volume: 123 Issue: 19 Pages: 4324-4332

    • DOI

      10.1021/acs.jpcb.9b00589

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] ホルミウム錯体の側鎖が分子集積構造に与える影響2021

    • Author(s)
      小見山夏緒・岸川圭希・桑折道済
    • Organizer
      第38回高分子学会千葉地域活動若手セミナー
    • Related Report
      2020 Annual Research Report
  • [Presentation] ランタノイド複合カラム状分子集合体の構築と磁気特性評価2020

    • Author(s)
      佐伯勇哉・岸川圭希・桑折道済
    • Organizer
      第69回高分子討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ホルミウム元素を複合したカラム状磁性分子集合体の構築2020

    • Author(s)
      佐伯勇哉・岸川圭希・桑折道済
    • Organizer
      第10回CSJ化学フェスタ2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] ホルミウム含有高分子を用いる無着色磁性粒子の作製と利用2020

    • Author(s)
      桑折道済
    • Organizer
      応用物理学会 磁気科学研究会第9回講演会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] ランタノイド複合液晶材料の作製と磁性評価2020

    • Author(s)
      佐伯勇哉・岸川圭希・桑折道済
    • Organizer
      応用物理学会 磁気科学研究会第9回講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ホルミウムを含む分子集合体の構築と磁気特性2020

    • Author(s)
      佐伯勇哉・岸川圭希・桑折道済
    • Organizer
      第30回日本MRS年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ランタノイド元素複合カラムナー液晶相の発現と磁性評価2019

    • Author(s)
      佐伯勇哉・岸川圭希・桑折道済
    • Organizer
      第23回液晶化学研究会シンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] ランタノイド元素を複合したカラムナー液晶相の発現および磁性評価2019

    • Author(s)
      佐伯勇哉・岸川圭希・桑折道済
    • Organizer
      019年日本液晶学会討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] ランタノイド元素複合カラムナー液晶相の磁性評価2019

    • Author(s)
      佐伯勇哉・岸川圭希・桑折道済
    • Organizer
      第68回高分子討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] ランタノイド元素複合化によるカラム状集合体の発現と磁場応答2019

    • Author(s)
      佐伯勇哉・岸川圭希・桑折道済
    • Organizer
      第9回CSJ化学フェスタ2019
    • Related Report
      2019 Research-status Report
  • [Presentation] ランタノイド複合化による自己集合体の形成と磁気特性2019

    • Author(s)
      佐伯勇哉・岸川圭希・桑折道済
    • Organizer
      第29回日本MRS年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] ランタノイド元素複合化によるカラム状集合体の発現と磁場応答2019

    • Author(s)
      佐伯勇哉・岸川圭希・桑折道済
    • Organizer
      日本磁気科学会 第25回研究会 高分子・材料プロセス分科会研究会
    • Related Report
      2019 Research-status Report
  • [Remarks] 千葉大学ソフト材料化学研究室HP

    • URL

      http://chem.tf.chiba-u.jp/gacb03/saito/toppu.html

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
  • [Patent(Industrial Property Rights)] 磁性錯体化合物、フィルムおよびコロイド2021

    • Inventor(s)
      桑折道済, 岸川圭希, 佐伯勇哉
    • Industrial Property Rights Holder
      桑折道済, 岸川圭希, 佐伯勇哉
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-048109
    • Filing Date
      2021
    • Related Report
      2020 Annual Research Report

URL: 

Published: 2019-07-04   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi