電子的に異なるヘキサキス (m-フェニレン・エチニレン) マクロサイクルの強制管状組成:複数の水素結合相互作用によって引き起こされる持続的な柱状の積み重ね
Yulong Zhong1, Yi Yang1, Yi Shen2
1College of Chemistry, Beijing Normal University , Beijing 100875, China.
Journal of the American Chemical Society
|October 19, 2017
まとめ
水素結合はマクロサイクルを 螺旋状の柱状のスタックに 自己組み立てさせます この分子配列は,バックボーン・エレクトロニクスとは独立しており,様々なコンポーネントに適応できるナノチューブを形成します.
科学分野:
- 超分子化学
- 材料科学
- 有機化学
背景:
- マクロサイクルは大きなリングを持つ分子です.
- 秩序ある構造を 作り出すには 自己組み立てが不可欠です
- 水素結合とアロマティック・スタッキングは重要な非共性相互作用である.
研究 の 目的:
- マクロサイクルの自己組み立てにおける水素結合の役割を調査する.
- 背骨の電子特性がコラムアセンブリに影響するかどうかを判断する.
- マクロサイクルの管状構造の形成を研究する.
主な方法:
- 異なる電子特性を持つヘキサキス (m-フェニレンエチニレン) マクロサイクルを合成する.
- 1H NMR,吸収,光,円形二重化 (CD) を含む光譜分析.
- 原子力顕微鏡 (AFM) で自己組み立て構造を可視化する.
主要な成果:
- マクロサイクルは,非極性溶媒における水素結合によって強く結合し,螺旋状のスタックを形成する.
- アセンブリはバックボーン電子特性とは無関係ですが,溶媒の極性には敏感です.
- AFMは 単一の柱状ナノチューブの形成を確認した
- ヘテロアソシエーションはハイブリッドナノチューブの形成につながった.
結論:
- 水素結合はこれらのマクロサイクルの柱状の自己組み立てを推進する支配的な力です.
- その結果 螺旋状のスタックは ナノチューブを形成し 様々な分子成分を収納できます
- この研究は,形状固有のマクロサイクルを機能的な管状構造に整合させるための一般的な方法を提供します.
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