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Development of orientation control method for metal nanoparticles using photo-induced crawling motion of crystals

Research Project

Project/Area Number 22K14531
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 27010:Transport phenomena and unit operations-related
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Saito Koichiro  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 主任研究員 (00828296)

Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2024: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsアゾベンゼン / 光異性化 / 有機結晶 / 相転移 / 金属ナノ粒子 / ナノ粒子
Outline of Research at the Start

ナノ粒子の配向・配列を精密に制御して基板上に並べる技術は、光を高度に制御する光学材料への応用につながる。本研究では、アゾベンゼン誘導体の結晶が光照射によってガラス表面上を這うように運動する現象(光誘起結晶移動)を利用して、結晶内部に導入されたナノ粒子の配向を、運動方向に沿って制御する技術の開発を目的とする。まず、光誘起結晶移動の際に生じる結晶内部の流動機構を詳細に解明し、得られる知見に基づいてナノ粒子の配向制御に取り組む。

Outline of Final Research Achievements

In this study, we aimed to control the orientation of nanoparticles by utilizing light-induced crawling of crystals. Time-resolved X-ray diffraction revealed that a directional flow occurs when azobenzene crystals move on a glass substrate under light irradiation. We also succeeded in transporting fluorescent nanoparticles mixed in azobenzene crystals by light irradiation. Experiments dispersing nanoparticles in liquid azobenzene led to the development of a method to control the dispersion state of gold nanoparticles reversibly in aqueous solution using visible light. We also succeeded in fabricating an array structure in which gold nanoparticles are linked together based on light-induced crystal crawling. It is expected that orientation control using rod-shaped nanoparticles will be possible in the future.

Academic Significance and Societal Importance of the Research Achievements

光の照射方向に応じてアゾベンゼン結晶が動く現象は、伸縮や屈曲とも異なるフォトメカニカル効果として注目されていたが、その機構が未解明であった。本研究により、光で融解した液相のアゾベンゼンの指向的な流動が影響していることが明らかとなった。本研究で得られた知見はアゾベンゼンの高速な液滴移動や、微粒子運搬技術にも生かされ、学術的な意義が大きい。また、研究の過程で微粒子の可逆的分散制御といった想定外の成果も得られ、アゾベンゼン分子の応用を広げることもできた。光照射で運搬された微粒子が配列構造を形成することも明らかになったため、メタマテリアルへの応用につながる微粒子配向制御が今後実現できると期待される。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (13 results)

All 2025 2024 2023 2022

All Journal Article (8 results) (of which Peer Reviewed: 8 results,  Open Access: 4 results) Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Diffracted X-ray blinking reveals signature crystal polymorph dynamics in 1,2,3,5-Tetrabromobenzene2025

    • Author(s)
      McGehee Keegan、Saito Koichiro、Fukaya Ryo、Haruki Rie、Nozawa Shunsuke、Gao Minghao、Sasaki Yuji C.、Mio Kazuhiro、Norikane Yasuo
    • Journal Title

      Scientific Reports

      Volume: 15 Issue: 1 Pages: 10166-10166

    • DOI

      10.1038/s41598-025-95316-z

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Photo-controllable microcleaner: photo-induced crawling motion and particle transport of azobenzene crystals on a liquid-like surface2024

    • Author(s)
      Saikawa Makoto、Ohnuma Mio、Manabe Kengo、Saito Koichiro、Kikkawa Yoshihiro、Norikane Yasuo
    • Journal Title

      Materials Horizons

      Volume: 11 Issue: 19 Pages: 4819-4827

    • DOI

      10.1039/d4mh00455h

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Multimode crawling motions of azobenzene crystal induced by light intensities for application as a shape-changeable microcleaner2024

    • Author(s)
      Saikawa Makoto、Manabe Kengo、Saito Koichiro、Kikkawa Yoshihiro、Norikane Yasuo
    • Journal Title

      CrystEngComm

      Volume: 26 Issue: 44 Pages: 6274-6281

    • DOI

      10.1039/d4ce00827h

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Releasing a bound molecular spring with light: a visible light-triggered photosalient effect tied to polymorphism2024

    • Author(s)
      McGehee Keegan、Saito Koichiro、Kwaria Dennis、Minamikawa Hiroyuki、Norikane Yasuo
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 26 Issue: 8 Pages: 6834-6843

    • DOI

      10.1039/d3cp04691e

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Photo-controllable azobenzene microdroplets on an open surface and their application as transporters2024

    • Author(s)
      Norikane Yasuo、Ohnuma Mio、Kwaria Dennis、Kikkawa Yoshihiro、Ohzono Takuya、Mizokuro Toshiko、Abe Koji、Manabe Kengo、Saito Koichiro
    • Journal Title

      Materials Horizons

      Volume: 11 Issue: 6 Pages: 1495-1501

    • DOI

      10.1039/d3mh01774e

    • Related Report
      2023 Research-status Report
    • Peer Reviewed
  • [Journal Article] Visualization of the Dynamics of Photoinduced Crawling Motion of 4-(Methylamino)Azobenzene Crystals via Diffracted X-ray Tracking2023

    • Author(s)
      Saito Koichiro、Ichiyanagi Kouhei、Fukaya Ryo、Haruki Rie、Nozawa Shunsuke、Sasaki Daisuke、Arai Tatsuya、Sasaki Yuji C.、McGehee Keegan、Saikawa Makoto、Gao Minghao、Wei Zhichao、Kwaria Dennis、Norikane Yasuo
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 24 Issue: 24 Pages: 17462-17462

    • DOI

      10.3390/ijms242417462

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Transportation of Nano/Microparticles via Photoinduced Crawling of Azobenzene Crystals2023

    • Author(s)
      Saito Koichiro、Ichiyanagi Kouhei、Nozawa Shunsuke、Haruki Rie、Fan Dongxiao、Kanazawa Tomoki、Norikane Yasuo
    • Journal Title

      Advanced Materials Interfaces

      Volume: 10 Issue: 13 Pages: 2202525-2202525

    • DOI

      10.1002/admi.202202525

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Visible‐Light‐Induced Reversible Self‐Assembly of Gold Nanorattles Using Anionic ortho‐Fluoroazobenzene2022

    • Author(s)
      Saito Koichiro、McGehee Keegan、Norikane Yasuo
    • Journal Title

      Particle & Particle Systems Characterization

      Volume: 39 Issue: 11 Pages: 2200123-2200123

    • DOI

      10.1002/ppsc.202200123

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] アゾベンゼン結晶の光誘起移動によって運搬される微粒子の動態解析2024

    • Author(s)
      斎藤 滉一郎、一柳 光平、野澤 俊介、春木 理恵、深谷 亮、新井 達也、佐々木 大輔、佐々木 裕次、則包 恭央
    • Organizer
      第71回応用物理学会春季学術講演会
    • Related Report
      2023 Research-status Report
  • [Presentation] 光照射下におけるアミノアゾベンゼン結晶の移動現象と微粒子の運搬2023

    • Author(s)
      斎藤 滉一郎、則包 恭央
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2023 Research-status Report
  • [Presentation] Visualization of the Dynamics of Photoinduced Crawling Motion of 4-(Methylamino)Azobenzene Crystals via Diffracted X-ray Tracking2023

    • Author(s)
      Saito Koichiro、Ichiyanagi Kouhei、Fukaya Ryo、Haruki Rie、Nozawa Shunsuke、Sasaki Daisuke、 Arai Tatsuya、Sasaki Yuji C.、McGehee Keegan、Saikawa Makoto、Gao Minghao、Wei Zhichao、Kwaria Dennis、Norikane Yasuo
    • Organizer
      International Journal of Molecular Sciences
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] 可視光照射による可逆的な金ナノキューブの分散制御2023

    • Author(s)
      斎藤 滉一郎、Keegan McGehee、則包 恭央
    • Organizer
      日本化学会 第103春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 光誘起結晶移動に基づく材料運搬および 移動機構の考察2022

    • Author(s)
      斎藤 滉一郎、一柳 光平、野澤 俊介、春木 理恵、金澤 知器、ファン ドンシャオ、則包 恭央
    • Organizer
      2022年光化学討論会
    • Related Report
      2022 Research-status Report

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Published: 2022-04-19   Modified: 2026-01-16  

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