アゾベンゼン超分子制御ナノ粒子への切り替え

Zonglin Chu¹, Yanxiao Han², Tong Bian¹

¹Department of Organic Chemistry , Weizmann Institute of Science , Rehovot 76100 , Israel.

Journal of the American Chemical Society

|January 1, 2019

まとめ

研究者は水溶性アゾベンゼンナノ粒子を溶解リガンドで共吸収することで開発した. この突破により光を制御したナノマテリアルが水中の環境で作られオーガニック溶媒の限界を克服できます

科学分野:

材料科学
ナノテクノロジー
写真化学

背景:

アゾベンゼンの光異性化により,光が材料の性質を制御できる.
アゾベンゼンの排水性は水性媒体での使用を制限する.
水と互換性のある光反応システムの開発は,より広範なアプリケーションに不可欠です.

研究の目的:

水溶性アゾベンゼン基ナノマテリアルを作るために
アゾベンゼン溶解性と光異性化に対する共吸収リガンドの効果を調査する.
水中の生物学的環境における光反応システムの可能性を調査する.

主な方法:

アゾベンゼンと水溶性リガンドによるナノ粒子の機能化.
アゾベンゼンと背景リガンドの比率を正確に制御する.
ナノ粒子構造を理解するための分子ダイナミクスシミュレーション
紫外線と可視光にさらされた光異性化試験

主要な成果:

アゾベンゼンで機能化されたナノ粒子の水溶性が優れた.
溶解性に影響する異なった超分子構造を特定した.
水中の非常に可逆的な光異性化が示されています.
背景リガンドがアゾベンゼンのスイッチング運動に大きく影響し,あるリガンドが反応を6000倍以上加速することを示した.

結論:

アゾブンゼンと溶解リガンドの共吸収により,水溶性光反応性ナノマテリアルが効果的に生成されます.
背景リガンドの選択は,光異性化ダイナミクスを決定的に影響する.
このアプローチにより,水性および潜在的に生物学的用途のための新しい光反応性ナノ材料の開発が可能になります.

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アゾベンゼン超分子制御 ナノ粒子への切り替え