高度にコプラナーで非常に長いオリゴ ((アルキルフラン):特定のヘッド・トゥ・ヘッド・デフェクトを持つ結合系
Xu-Hui Jin1, Dennis Sheberla, Linda J W Shimon
1Department of Organic Chemistry and Chemical Research Support Unit, Weizmann Institute of Science , Rehovot 76100, Israel.
Journal of the American Chemical Society
|January 21, 2014
まとめ
私たちは,史上最も長い16メーカーのオリゴフランを含む,新しい平面オリゴフランを合成しました. これらの結合オリゴーマーには高光度とユニークな電子特性があり,一般的な構造的欠陥の影響を受けません.
科学分野:
- 有機化学 オーガニック・ケミストリー
- マテリアルサイエンス 材料科学
- ポリマー化学のポリマー化学について
背景:
- 平面的背骨を持つ結合オリゴーマーには大きな関心があります.
- オリゴフランは,有機エレクトロニクスにおける潜在的な応用を持つ結合分子の一種である.
- ヘッドツーヘッド接続などの構造上の欠陥は,平面性を破壊し,電子特性に影響を与える可能性があります.
研究 の 目的:
- 一連の対称で,同位体的に純粋なオリゴフランを合成し,特徴づけること.
- オリゴフランの特性に対する結合長さの影響を調査する.
- 最も長く合成されたオリゴフラン16F-6C6の電子特性,特にその酸化還元状態を調査する.
主な方法:
- 異なる結合長 (nF-2C6,n=4,6,8,および16F-6C6) のオリゴフランを合成する.
- 分子構造と性質をモデル化するための計算研究.
- 顕微鏡の特徴付け (例えば,UV-Vis,光) とX線結晶学.
- レドックス状態の実験的および計算的研究.
主要な成果:
- チオフェンの類似体とは異なり,ヘッドツーヘッドの欠陥にもかかわらず,フラン骨格の平面性は大きく維持されています.
- オリゴフランの特性には,結合長が大きく影響する.
- 16メルのオリゴフラン (16F-6C6) は安定し,光性が高く,二重酸化状態では単一バイラジカル特性を示す.
- 16F-6C6の開いた殻のシングレット状態は,閉じた殻のディケーションよりも安定しています.
結論:
- オリゴフランは,調節可能な性質を持つ結合材料の有望なクラスを提供しています.
- フランの骨格が欠陥に耐える強さは,電子アプリケーションに魅力的になります.
- 16F-6C6は,オリゴフラン合成と電子表記における新しいベンチマークを表しています.
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