フルレレン-コバルタジチオレン-テトラチアフルバレンのpi結合マルチドナー/受容器配列:合成と構造から電子相互作用まで
Yutaka Matsuo1, Masashi Maruyama, S Shankara Gayathri
1Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. matsuo@chem.s.u-tokyo.ac.jp
Journal of the American Chemical Society
|August 13, 2009
まとめ
この研究は,ユニークな光電化学および非線形光学特性を有する新しいC(60) -Co-TTF-Co-C(60) 分子配列を詳細に説明しています. 合成された配列は,強力な近赤外線吸収と,高度な電子アプリケーションの潜在能力を示しています.
科学分野:
- マテリアルサイエンス 材料科学
- 超分子化学 超分子化学
- フォトケミストリー フォトケミストリー
背景:
- フルレレンとテトラチアフルヴァレン (TTF) は,分子電子学の重要な成分です.
- 複雑な分子アーキテクチャの設計は,電子的および光学的特性を調節するために不可欠です.
研究 の 目的:
- 新しいC(60) -Co-TTF-Co-C(60) 分子配列を合成し,特徴づけること.
- その光電気化学的行動と非線形光学 (NLO) 性質を調査する.
- この受容者-受容者-ドナー-受容者-受容者のシステムにおける構造-性質の関係を探求する.
主な方法:
- フルレンの前駆体からコバルト二カルボニル複合体の合成.
- TTFテトラチオラートブリッジを使用したC(60) -Co-TTF-Co-C(60) 配列の組み立て.
- 顕微鏡分析 (UV-Vis-NIR) と電気化学測定を行いました.
- 興奮状態のダイナミクスを研究するための5秒閃光光分解.
- 第三次非線形光学 (NLO) 感受性測定. 第三次非線形光学 (NLO) 感受性測定.
主要な成果:
- C(60) -Co-TTF-Co-C(60の配列は,LMCTの移行による強力な近赤外線吸収 (λmax = 1,100 nm) を示しています.
- 6つの可逆的な電子伝送プロセスが観察され,リッチ・レドックス行動を示した.
- 光刺激は,電荷分離状態と,共鳴による電子のリラックス状態につながります.
- 有意な3次元の非線形感受性 (dakdak) が測定されました (dakdak) = 9.28 x 10−12 esu).
結論:
- 合成されたC(60) -Co-TTF-Co-C(60) 配列は,有望な光電気化学およびNLO特性を有しています.
- 観測された性質は,配列内のπ結合と電子相互作用に起因する.
- この分子設計は,光電子や非線形光学における応用の可能性を秘めています.
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