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三脚型トリプチセン機能団が誘起する特異な高分子自己集合化と機能発現

Research Project

Project/Area Number 20J23317
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Review Section Basic Section 35010:Polymer chemistry-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

CHEN YUGEN  東京工業大学, 物質理工学院, 特別研究員(DC1)

Project Period (FY) 2020-04-24 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2022: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2021: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2020: ¥900,000 (Direct Cost: ¥900,000)
KeywordsTripodal triptycene / Self-assembly / Polydimethylsiloxane / Polyethylene glycol / Telechelic polymer / Poly(butyl acrylate) / Di-block copolymer / Tripodal Triptycene / Telechelic Polymer / Narrow-disperse / Polyethylene Glycol
Outline of Research at the Start

Our group has reported that tripodal triptycenes self-assemble to form thin films with long-range structural integrity. Interestingly, when a tripodal triptycene unit is attached to both termini of polydimethylsiloxane (PDMS), the resultant telechelic polymer exhibits a particular molecular ordering and a dramatic enhancement of mechanical properties. In this project, intensive studies will be conducted to obtain further insight into the behavior of such telechelic PDMS system. Moreover, this project will focus on the synthesis and properties of new triptycene-appended polymer systems.

Outline of Annual Research Achievements

I conducted the following two research subjects.
(1) I have investigated the structure and mechanical properties of telechelic PDMS with 1,8,13-substituted triptycene termini (1,8,13-TripPDMS). Interestingly, due to the excellent self-assembly ability of the triptycene termini, 1,8,13-TripPDMS can form a free-standing film without any chemical crosslinking. Furthermore, as the free-standing film was found to show self-healing properties in the temperature range below its melting point. This work was published in Chemical Science.
(2) I also designed new AB diblock copolymer systems using poly(butyl acrylate) as a main chain with a triptycene-containing polymer segment to examine whether the specific self-assembly ability of triptycene can cause microphase separation leading to a particular structure. Interestingly, triptycene-containing AB diblock copolymers assemble into a well-defined ordered structure and exhibit enhanced mechanical and rheological properties. Detailed variable-temperature X-ray diffraction analysis revealed that the thermal stability of the assembled structure formed by the diblock copolymers improved as the triptycene content increases. This work was recently submitted for publication and is currently under review.

Research Progress Status

令和4年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和4年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (6 results)

All 2023 2022 2021 2020

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results)

  • [Journal Article] Overcoming the entropy of polymer chains by making a plane with terminal groups: A thermoplastic PDMS with a long-range 1D structural order2023

    • Author(s)
      Y. Chen, F. Ishiwari, T. Fukui, T. Kajitani, H. Liu, X. Liang, K. Nakajima, M. Tokita, T. Fukushima
    • Journal Title

      Chem. Sci.

      Volume: 14 Issue: 9 Pages: 2431-2440

    • DOI

      10.1039/d2sc05491d

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Self-assembly properties of a telechelic polyethylene glycol with tripodal triptycene termini in water2022

    • Author(s)
      Chen YUGEN、石割文崇、福井智也、梶谷孝、福島孝典
    • Organizer
      第71回高分子学会年次大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Self-assembly behavior and mechanical properties of triptycene-appended di-block copolymers2022

    • Author(s)
      Chen YUGEN、福井智也、梶谷孝、福島孝典
    • Organizer
      第71回高分子討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 三脚型トリプチセンを両末端に持つポリジメチルシロキサンによる自己修復性自立膜形成2021

    • Author(s)
      CHEN YUGEN、石割文崇、福井智也、梶谷孝、福島孝典
    • Organizer
      第70回高分子討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 三脚型トリプチセンを両末端に有するテレケリックポリエチレングリコールの自己集合挙動とゲル化特性3.学2021

    • Author(s)
      CHEN YUGEN、石割文崇、福井智也、梶谷孝、福島孝典
    • Organizer
      第70回高分子学会年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Remarkable effect of a tripodal triptycene additive on the self-assembling properties of narrow-distribution PDMS terminated with triptycene groups2020

    • Author(s)
      Yugen CHEN, Fumitaka ISHIWARI, Keita FUCHISE, and Takanori FUKUSHIMA
    • Organizer
      第 69 回高分子学会年次大会
    • Related Report
      2020 Annual Research Report

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Published: 2020-07-07   Modified: 2024-03-26  

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