2023 Fiscal Year Final Research Report
Multiple controlled polymerization of stereoregularity/sequence/molecular weight: synthesis of functional polymers with degradability
| Project/Area Number |
21K05168
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 35010:Polymer chemistry-related
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | カチオン重合 / リビング重合 / 立体構造/シークエンス/分子量の複数制御型重合 / 分解性ポリマー / 刺激応答性ポリマー / 分解性ポリスチレン類 / ステレオブロックポリマー / 次世代型刺激応答材料 |
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| Outline of Final Research Achievements |
Although many functional materials have been created by living polymerization in recent years, there is still a large gap with biopolymers in terms of structural fineness and organization. In this study, (i) polymerization systems in which stereostructure, sequence, and molecular weight are controlled simultaneously, (ii) precisely synthesized highly functional thermoresponsive polymers, (iii) polymers programmed for selective degradation, were created. Finally, new next-generation materials with both functionality and degradability were produced. Specifically, stereospecific block polymers, degradable polystyrenes, ABC-type ordered-sequence polymers, and new temperature-responsive polymers were precisely synthesized. Furthermore, the super-acceleration of metal-free polymerization systems by light irradiation and the design of various degradation methods with advanced structural control were also carried out.
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| Free Research Field |
高分子合成
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| Academic Significance and Societal Importance of the Research Achievements |
生体高分子を目標にし、立体構造やシークエンスの制御などの検討を、ポリマーの分子量や形態の制御が可能なリビング重合と様々な重合との融合で行った。さらに生体系では、機能をつかさどるのは刺激応答性部位であり、高分子の切断も重要な役割を果たしている。そこでこれらを合成高分子で実現させるため、多くの相互作用を開拓しその官能基や機能部位が協調して働けるよう検討した。これらは学術的に大きな意義がある。そして、カチオン重合を用いてポリマーの合成/刺激応答性/分解性をデザインし直して創成した各種機能性ポリマーは、社会的にも次世代型刺激応答材料として大きな意義があると考えられる。
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