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
| Project/Area Number |
20J23317
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Single-year Grants |
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| Section | 国内 |
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| Review Section |
Basic Section 35010:Polymer chemistry-related
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
CHEN YUGEN 東京工業大学, 物質理工学院, 特別研究員(DC1)
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| Project Period (FY) |
2020-04-24 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| 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)
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| Keywords | Tripodal triptycene / Self-assembly / Polydimethylsiloxane / Polyethylene glycol / Telechelic polymer / Poly(butyl acrylate) / Di-block copolymer / Tripodal Triptycene / Telechelic Polymer / Narrow-disperse / Polyethylene Glycol |
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| 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.
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| 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.
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| Research Progress Status |
令和4年度が最終年度であるため、記入しない。
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| 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。
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Report
(3 results)
Research Products
(6 results)
