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C60フラーレンのアニオン媒介光物理学 [3]ロタキサンシャトル
Timothy A Barendt1, Ilija Rašović2, Maria A Lebedeva2
1Chemistry Research Laboratory, Department of Chemistry, University of Oxford , Mansfield Road, Oxford OX1 3TA, United Kingdom.
Journal of the American Chemical Society
|January 17, 2018
まとめ
この研究は,アニオン結合を用いて分子運動を制御し,光の放出をオン・オフする新しい分子シャトルを導入します. 機械的に相互接続された 分子機械のこの突破は 人工的な光合成を進めるかもしれません
科学分野:
- 超分子化学
- ナノテクノロジー
- 材料科学
背景:
- 機械的に相互接続された分子機械は,ナノテクノロジーのアプリケーションのための分子運動の正確な制御を提供します.
- 効率的な人工光合成装置を開発するには,電子ドナーと受容体間の制御された通信が必要です.
研究 の 目的:
- アニオン媒介による光物理学的性質の制御のための新しい [3]ロタキサン分子シャトルを構築し,特徴づけること.
- 分子運動,アニオン認識,光放出のスイッチングの関係を調査する.
主な方法:
- アニオンテンプレート合成の方法
- プロトン核磁気共鳴 (1H NMR) スペクトルスコピー
- 静止状態と時間解像度のUV対IR吸収と放射スペクトロスコーピー
- 電気化学の研究
主要な成果:
- ビスナフタレン二酸化物 (NDI) とC60フルレンの成分を含む[3]ロタキサン分子シャトルが合成された.
- アニオン認識は,ドナーと受容体の相対的な位置を変え,ダイナミックな形状の変化を引き起こした.
- クロリド結合は電子移転を防止し,C60フルレンベースの電荷分離状態を形成することによって,NDIの放出をオンにしました.
- 塩化物がないため,NDI含有電荷分離状態でNDIの放出を抑制した.
結論:
- ロタキサンにおける分子運動のアニオン媒介制御は,光物理的振る舞いを正確に調節することができます.
- この作業は,分子シャトルで前例のないオン/オフの可換性放射反応を示しています.
- この発見は人工光合成を含む 先進的な分子装置への道を開きます
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