3Dアロマティック・ボロン・リッチ・クラスター・フォトオキシダントを用いた可視光誘発オレフィン活性化
Marco S Messina1,2, Jonathan C Axtell1, Yiqun Wang1
1Department of Chemistry and Biochemistry, University of California, Los Angeles , 607 Charles E. Young Drive East, Los Angeles, California 90095-1569, United States.
Journal of the American Chemical Society
|May 18, 2016
まとめ
ドデカボラートクラスターを基にした新しい金属無光酸化反応剤は,可視光を用いてスタイレン単体とイソブチレンのポリメリゼーションを開始することができます. これらの空気中安定した化合物は 化学的変異を起こすための持続可能な代替手段です
科学分野:
- 無機化学
- 材料科学
- 写真化学
背景:
- 充実したイコサヘドラルドデカボラートクラスター (B12 ((OCH2Ar) 12) は,新しい光化学的用途のために調査されています.
- ベンジル置換物質とボロンクラスターコア間の電荷伝達は,光刺激を可能にします.
研究 の 目的:
- 金属のない光酸化反応剤の新種を導入する.
- ポリメリゼーション反応を開始する際の有用性を実証する.
主な方法:
- 青いLEDを使用したB12 (OCH2Ar) 12クラスタの光刺激.
- 様々なスタイレン・モノマーとイソブチレンによる電子移転研究.
- ポリメリゼーションの開始と特徴付け
主要な成果:
- 光刺激クラスターは,高興奮状態の減少ポテンシャル (3Vまで) を示す.
- 低触媒負荷 (0.005 mol%) で電子豊富なおよび電子欠乏のスタイレンで観察された効率的なポリメリゼーション開始.
- イソブチレンから高分岐ポリイソブチレンを生産する.
結論:
- B12 ((OCH2Ar) 12クラスターは,空気に安定した,金属のない光酸化反応剤の新しいクラスを表しています.
- これらの反応剤は,光誘導による電子移転によってオレフィンのポリメリゼーションを効果的に媒介することができます.
- この発見は 持続可能な光還元触媒の 新しい道を開きます
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