シンプルなアリルボロンエステルの新しい側面を明らかにする:重原子のない分子からの長寿室温の光
Yoshiaki Shoji1, Yasuhiro Ikabata, Qi Wang2
1Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
Journal of the American Chemical Society
|January 31, 2017
まとめ
単純なアリルボロンエステルは固体状態で室温の光性を示し,既存の理論に異議を唱える. この発見は 重い原子なしで 光する有機物質の設計に 新たな道を開きます
科学分野:
- 有機化学
- 材料科学
- フォト物理学
背景:
- アリルボロンエステルは,スズキ-ミヤウラ交互結合反応における重要な反応剤である.
- 発光する有機分子は,典型的には重原子やカルボニル基を必要とし,トリプル興奮状態を生成する.
- これらの特徴を持たない分子における光のメカニズムはよく理解されていません.
研究 の 目的:
- 単純なアリルボロンエステルの予期せぬ光性について調査する.
- この光の原因となるメカニズムを解明する.
- 関連化合物におけるこの現象の範囲と影響因子を調査する.
主な方法:
- アリルボロンエステルの実験合成と特徴付け
- 室温での固体光発光スペクトロスコーピー
- 理論的な密度関数理論 (DFT) の計算.
- アリルボロン化合物の体系的調査
主要な成果:
- 単純なアリルボロンエステルは,長い寿命 (秒) を有する室温での有意な固体リン酸化を示します.
- 理論的な計算では,トリプル興奮状態のB-Cipso部分で外平面の歪みを明らかにし,光を促進します.
- 光は固体分子包装によって影響を受け,ボロン置換パターンによってのみ影響を受けません.
結論:
- アリルボロンエステルは,新種の光有機物質を表しています.
- この発見は,有機光に関する従来的な理解に異議を唱える.
- 固体状態での分子包装は,これらの化合物の光を可能にするために重要な役割を果たします.
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