単一ユニットモノマーを順番に並べ替えて作る離散型およびステレオ型オリゴーマー
Zixuan Huang1, Benjamin B Noble2, Nathaniel Corrigan1
1Centre for Advanced Macromolecular Design and Australian Centre for NanoMedicine, School of Chemical Engineering , UNSW , Sydney , NSW 2052 , Australia.
Journal of the American Chemical Society
|September 20, 2018
まとめ
精密な配列と立体化学を用いた合成ポリマーを作る 新しい方法を開発しました このフォト-RAFT SUMI技術は,周期性モノメアの制御された1つの単位を一度に挿入し,高いトランス選択性を達成します.
科学分野:
- ポリマー化学
- 有機合成
- 材料科学
背景:
- 自然のバイオポリマーは,その生物学的機能に不可欠な正確な構造 (分子量,モノマー配列,ステレオ規則性) を表しています.
- 合成ポリマーには化学的多様性があり バイオポリマーの精度を真似るために 操作が簡単です
- 合成ポリマーの構造を 完璧に再現することは その機能を化学的に理解する鍵です
研究 の 目的:
- 配列制御およびステレオ特異的オリゴマーの合成のための新しい方法論を開発する.
- 精密なポリマー構造のためのフォトRAFT SUMIの可能性を調査する.
- ラジカルポリメリゼーションにおけるサイクルモノマー挿入のステレオ化学的結果を探求する.
主な方法:
- 交互のラジカルチェーン成長と連続した光誘導RAFT単一ユニットモノマー挿入 (photo-RAFT SUMI) を利用した.
- インデネスとN置換マレミドという2つの周期性モノメアのファミリーを使用した.
- RAFT剤へのモノマー挿入のステレオ選択性を調査した.
主要な成果:
- 周期性モノメアを順番で交互に添加することでシーケンス制御が達成される.
- サイクルモノマーをRAFT剤に挿入する際には,高いトランスセレクティブ性が実証されています.
- 循環性モノメアは,混合のシス/トランス挿入を与える非循環性モノメアとは異なり,トランス選択性を生み出します.
結論:
- フォトRAFT SUMI方法は,配列制御およびステレオ特異的な合成オリゴマーの製造を可能にします.
- サイクルモノメアのステリック障害は,高度にトランスセレクティブなポリマー鎖の成長を促します.
- このアプローチは,天然のバイオポリマーに類似した構造的に正確な合成ポリマーへの経路を提供します.
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