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Development of organic memory devices using self-assembled nanostructures of functional polymers

Research Project

Project/Area Number 21K05220
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 35030:Organic functional materials-related
Research InstitutionNational Institute for Materials Science

Principal Investigator

AIMI Junko  国立研究開発法人物質・材料研究機構, 高分子・バイオ材料研究センター, 主任研究員 (80579821)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsPhthalocyanine / star-shaped polymer / supramolecular polymer / OFET memory / 有機トランジスタメモリ / フタロシアニン / スターポリマー / 有機メモリ / フローティングゲート / 有機薄膜トランジスタ / 電荷蓄積材料
Outline of Research at the Start

ウェアラブルデバイスの需要が近年益々高まり、柔らかい有機材料を利用する有機エレクトロニクスデバイスが注目されている。その中で、有機トランジスタ(OFET)に画像やデータを記憶する機能を付与したOFETメモリが、折りたためるディスプレイや医療機器への応用に有望視されている。本研究では、長期間安定に電荷を保持できる機能性高分子材料を用いた、高性能有機フラッシュメモリ開発を目的とする。高分子の相分離を利用して、ホールと電子の両電荷をトラップできる両極性(アンバイポーラ)トラップ型OFETメモリの開発を行う。

Outline of Final Research Achievements

The objective of this study was to develop a high-performance organic transistor (OFET) memory using a star-shaped polymer with a functional molecule core as a charge storage material. In particular, we have investigated ambipolar charge trapping OFET memory that can stably trap electrons and holes within the material.
We have synthesized a novel supramolecular miktoarm star copolymer that utilizes a coordination bond between a star-shaped polystyrene with a zinc phthalocyanine core and a polymer with a pyridyl end-group. The supramolecular miktoarm star-shaped copolymer showed unique phase-separated morphology in thin film, that was utilized in the OFET memory device. The fabricated OFET memory showed ambipolar charge-trapping capability via applying voltage as well as UV-light.

Academic Significance and Societal Importance of the Research Achievements

近年、ウェアラブルメモリやディスポーザブルメモリなどの、新たな社会ニーズに応えるメモリデバイスの需要が高まっている。そこで注目されているのが、有機材料を用いる「有機不揮発性メモリ」である。有機材料の持つ、軽量、低環境負荷、安価で簡便なプロセス、材料の多様性などの特徴を生かした素子開発が行われている。しかしながら、有機メモリに利用されるメモリ材料は、性能や耐久性に関して未だ課題が多い。本研究では、高性能有機メモリ材料開発を目的に、新たなポリマー材料の合成およびメモリメカニズムの解明に取り組み、課題解決に取り組んだ。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (18 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (3 results) Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (10 results) (of which Int'l Joint Research: 6 results,  Invited: 3 results)

  • [Int'l Joint Research] 国立台湾大学/国立中興大学(その他の国・地域)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] 国立中興大学/国立台湾大学(その他の国・地域)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] National Taiwan University/National Chung Hsing University(その他の国・地域 (台湾))

    • Related Report
      2021 Research-status Report
  • [Journal Article] Reconfigurable Logic-in-Memory Constructed Using an Organic Antiambipolar Transistor2023

    • Author(s)
      Hayakawa Ryoma、Takahashi Kaito、Zhong Xinhao、Honma Kosuke、Panigrahi Debdatta、Aimi Junko、Kanai Kaname、Wakayama Yutaka
    • Journal Title

      Nano Letters

      Volume: 23 Issue: 22 Pages: 8339-8347

    • DOI

      10.1002/admt.202301049

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Preparation of Supramolecular Miktoarm Star Copolymers with a Zinc Phthalocyanine Core through ATRP and RAFT Polymerization2022

    • Author(s)
      Zhong Xinhao、Nagai Akira、Takeuchi Masayuki、Aimi Junko
    • Journal Title

      Macromolecular Rapid Communications

      Volume: 44 Issue: 3 Pages: 2200666-2200666

    • DOI

      10.1002/marc.202200666

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Optically Controllable Organic Logic-in-Memory: An Innovative Approach toward Ternary Data Processing and Storage2022

    • Author(s)
      Panigrahi Debdatta、Hayakawa Ryoma、Zhong Xinhao、Aimi Junko、Wakayama Yutaka
    • Journal Title

      Nano Letters

      Volume: 23 Issue: 1 Pages: 319-325

    • DOI

      10.1021/acs.nanolett.2c04415

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Fabrication of solution-processable OFET memory using a nano-floating gate based on a phthalocyanine-cored star-shaped polymer2022

    • Author(s)
      Aimi Junko、Yasuda Takeshi、Huang Chih-Feng、Yoshio Masafumi、Chen Wen-Chang
    • Journal Title

      Materials Advances

      Volume: 3 Issue: 7 Pages: 3128-3134

    • DOI

      10.1039/d1ma01081f

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Synthesis of poly(styrene)-b-poly(2-vinyl pyridine) four-arm star block copolymers via ATRP and their self-assembly behaviors2021

    • Author(s)
      Hsu Chia-Juei、Tu Cheng-Wei、Huang Yu-Wen、Kuo Shiao-Wei、Lee Rong-Ho、Liu Yu-Ting、Hsueh Han-Yu、Aimi Junko、Huang Chih-Feng
    • Journal Title

      Polymer

      Volume: 213 Pages: 123212-123212

    • DOI

      10.1016/j.polymer.2020.123212

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 電荷蓄積高分子を用いて溶液プロセスで作成する 有機トランジスタメモリ2024

    • Author(s)
      相見順子
    • Organizer
      日本化学会第104春季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Polymer-based nano-floating gate for organic field-effect transistor memory2023

    • Author(s)
      Junko Aimi
    • Organizer
      KJF-ICOMEP2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] OFET Memory Based on Supramolecular Miktoarm Star Copolymer with a Zinc Phthalocyanine Core2023

    • Author(s)
      ZHONG, XinHao, PANIGRAHI, Debdatta, HAYAKAWA, Ryoma, WAKAYAMA, Yutaka, TAKEUCHI, Masayuki, AIMI, Junko
    • Organizer
      KJF-ICOMEP 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Supramolecular Miktoarm Star Copolymer with a Zinc Phthalocyanine Core for Organic Transistor Memory2023

    • Author(s)
      ZHONG, XinHao, AIMI, Junko, TAKEUCHI, Masayuki
    • Organizer
      日本化学会第103春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Supramolecular Miktoarm Star Copolymers with a Zinc Phthalocyanine Core2022

    • Author(s)
      ZHONG, XinHao, AIMI, Junko, TAKEUCHI, Masayuki.
    • Organizer
      第71回高分子討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] スターポリマー電荷蓄積材料2022

    • Author(s)
      相見 順子
    • Organizer
      第71回高分子討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] 有機トランジスタメモリのための機能性高分子デザイン2021

    • Author(s)
      相見順子
    • Organizer
      WPI-MANA Virtual City of Workshops 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Design of functional star polymers for organic memory device applications2021

    • Author(s)
      Junko Aimi
    • Organizer
      Pacifichem 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Preparation and characterization of supramolecular miktoarm star copolymers with zinc phthalocyanine core2021

    • Author(s)
      Xinhao Zhong, Junko Aimi, Masayuki Takeuchi
    • Organizer
      4th G'L'owing Polymer Symposium in Kanto
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Functional Star-Shaped Polymer for Organic Memory Device Application2021

    • Author(s)
      Junko Aimi
    • Organizer
      MRSTIC2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2021-04-28   Modified: 2025-01-30  

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