アニオンベースのA2L3アセンブリの多重変形:二角三角反プリズムA8L12,テトラエドールA4L6,トリプルヘリケートA2L3 (A=アニオン)
Boyang Li1, Wenyao Zhang1, Shuai Lu2,3
1Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China.
Journal of the American Chemical Society
|December 4, 2020
まとめ
研究者はアニオン調整駆動アセンブリ (ACDA) を使用して複雑な多面体ケージを作成しました. これらのダイナミックな超分子構造は 逆転可能な変容を示し,キラルバージョンで 増幅された効果を示すゲストをカプセル化することができます.
科学分野:
- 超分子化学
- クリスタル・エンジニアリング
- 材料科学
背景:
- 高核性の多面体ケージの設計は,超分子化学における複雑な課題です.
- アニオン調整駆動アセンブリ (ACDA) は複雑な分子構造を構築するための経路を提供します.
研究 の 目的:
- ビフェニレン間隔のビス (urea) リガンドを使用して,新しいA2L3アーキテクチャのACDAを報告する.
- 三重ヘリケート,四面体,八核多面体を含む構造の多様性を探求する.
- これらのアセンブリのダイナミックな行動とゲストエンカプスレーション特性を調査する.
主な方法:
- アニオン調整駆動アセンブリ (ACDA) を特定のビス (urea) リガンドで利用した.
- A2L3 (H),A4L6 (T),A8L12 (P) の様々なアーキテクチャが特徴付けられている.
- 改造されたリガンドを用いたゲストエンカプスレーション,可逆変換,およびキラルアセンブリを調査した.
主要な成果:
- 三重ヘリケート (H),四面体 (T),八核平行パイペッド (P) のアーキテクチャを成功裏に組み立てました.
- 八核の多面体 (P) は96の水素結合を有し,これは離散的多面体で報告されている最高値であり,3つのテトラメチルアモニウムカチオンを封じ込んでいる.
- テンプレートゲスト,溶媒,および濃度を変えることで,可逆的な構造変化が実証されている.
- 合成されたエナチオ純三重ヘリケートとテトラヘドロンは,キラルビス (尿素) リガンドとリン酸を使用し,テトラヘドル複合体における有意なキラル増幅を観察した.
結論:
- ACDAは多様で高核性の多面体ケージの構築に多用途な戦略を提供します.
- これらのダイナミックな超分子組成は 驚くべき安定性を持ち ゲスト結合能力を持ち 外部刺激に反応します
- チラルの変種は,エナチオ選択的認識と増幅を必要とするアプリケーションの可能性を示しています.
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