水中のアニオン結合は,アザフォスファトラン機能化されたFeII4L4テトラエドールにおける構造的適応を促す
Dawei Zhang1,2, Tanya K Ronson1, Jesús Mosquera1
1Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom.
Journal of the American Chemical Society
|May 3, 2017
まとめ
研究者はアザフォスファトランの構成要素から水溶性FeII4L4のケージを作成しました. この適応性の高い超分子ケージは 水中で自己組織化して 様々なアニオンを捕捉し 形状記憶効果を示しています
科学分野:
- 超分子化学
- 協調化学
- 材料科学
背景:
- アザフォスファトラン化合物は,自己組み立てのためのユニークな構造と電子特性を提供します.
- アニオンテンプレート合成は複雑な超分子構造を構築するための強力な戦略です.
- 水溶性ケージは,生物学的および環境システムでのアプリケーションに望ましい.
研究 の 目的:
- アザフォスファトランのサブコンポーネントを使用して,新しいエンドヘドリック機能化されたFeII4L4テトラヘドルを合成する.
- アニオン封じ込め能力と,水溶性ケージの構造的適応性を調査する.
- 超分子ケージのダイナミックな行動と潜在的形状記憶効果を探求する.
主な方法:
- アニオンテンプレートによるアザフォスファトランベースのリガンドとFe (II) イオンの水性自己組成.
- FeII4L4四面体を特徴づけるために,スペクトル解析と結晶解析を行った.
- 変化する温度の研究とゲスト交換実験で 檻のダイナミクスと柔軟性を調べる
主要な成果:
- セルフアセンブリによる水溶性,エンドヘドリック機能化されたFeII4L4テトラエドルの形成.
- 35~219 Å3までの体積でケージ内のアニオン封じ込めの実証.
- テンプレートアニオンへのダイナミックな構造的適応と,ゲストの移転中の形状記憶現象の観察.
結論:
- 開発されたアザフォスファトランベースのFeII4L4ケージは,水性媒体でのアニオン認識のための多用途のプラットフォームです.
- ケージは,カプセル化されたアニオンに基づいてその形状を適応させ,重要な柔軟性とダイナミックな構造的同位体性を表しています.
- 観察された形状記憶効果は,反応し,再構成可能な超分子材料の可能性を強調しています.
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