コントロールされたラジカルホモポリメリゼーション 代表的なカチオンのポリメリ化ビニルエーテル
Shinji Sugihara1, Ayano Yoshida1, Taka-Aki Kono1
1Department of Applied Chemistry and Biotechnology, Graduate School of Engineering , University of Fukui , 3-9-1 Bunkyo , Fukui 910-8507 , Japan.
Journal of the American Chemical Society
|August 10, 2019
まとめ
リチウム水酸化物と特定のアゾイニシアターを使用して,ビニールエーサーの直接的な根性ホモポリメリゼーションを達成した. この方法は,効率的なポリメリゼーションのために水素結合とカチオン-π相互作用を利用し,制御された根性ポリメリゼーションを可能にします.
科学分野:
- ポリマー化学
- 有機合成
背景:
- ビニルエーテルの直接的根性ホモポリメリゼーションは,潜在的な副作用のために困難です.
- 既存の方法はしばしば特定の機能群や厳しい条件を必要とします.
研究 の 目的:
- ヴィニルエーテルのための簡単で効率的な直接的根性ホモポリメリゼーション方法を開発する.
- このポリメリゼーションにおける水素結合とカチオン-π相互作用の役割を調査する.
主な方法:
- 熱的に誘発されたアゾイニシアター (ディメチル2,2'-アゾビス (((2-メチルプロピオネート)) とリチウム水酸化物を用いた水懸浮ポリメリゼーション.
- ディチオカルバマート可逆添加分裂連鎖移転剤 (RAFT) を使用した制御されたポリメリゼーションの探索.
主要な成果:
- ビニルエーテルの直接的根性ホモポリメリゼーションで,ヒドロキシ群なしでほぼ完全な変換を達成した.
- 水素結合とLi+カチオン-πの相互作用は,副反応を抑制し,ポリメリゼーションを容易にするために重要であることが示された.
- RAFT剤を用いた制御されたポリメリゼーションの方法を成功裏に適応しました.
結論:
- 開発された方法は,水性システムにおけるビニルエーサーの直接的根性ホモポリマー化のための簡単な経路を提供します.
- 水素結合とカチオン-π相互作用の相互作用を理解することは,ビニルエーテルポリメリゼーションを制御する鍵です.
- このアプローチは,より広範な応用の可能性を持つビニルエーサーの制御されたポリメリゼーションの基盤を提供します.
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