ダイアザペロピレニウムを用いたホモ・キャテナン[2]
Xirui Gong, Jiawang Zhou, Karel J Hartlieb
1Department of Chemistry, Faculty of Science , King Abdulaziz University , Jeddah 22254 , Saudi Arabia.
Journal of the American Chemical Society
|May 4, 2018
まとめ
ダイアザペロピレニウム (DAPP) ベースのホモ[2]カテナン (DAPPHC8+) という新しいオクターケーション性機械的に相互接続した分子が合成された. この頑丈な構造により 電子の移動が速くなり,一時的な電荷分離状態が生成されます.
科学分野:
- 超分子化学
- 材料科学
- 写真化学
背景:
- 機械的に結合した分子 (MIM) は 独特の構造と機能の特性を有しています
- MIM内のチャージ転送の制御は,高度な材料の開発に不可欠です.
- ディアザペロピレニウム (DAPP2+) 単位は,その電子的および光物理的特性のために調査されています.
研究 の 目的:
- DAPPベースの新型オクターケーション性ホモ[2]キャテナン (DAPPHC8+) を合成し,特徴づけること.
- DAPPHC8+の形成における同性相互作用の役割を調査する.
- DAPPHC8+システム内の光誘導エネルギーと電子転送プロセスを研究する.
主な方法:
- 環境条件下でオクターケーション性ホモ[2]カテナンの合成.
- 分子間相互作用を明らかにするために,X線結晶学を用いた固体構造分析.
- 溶液中の光物理学的研究 (UV-Vis吸収,放射スペクトル検査,一時的吸収).
主要な成果:
- DAPPHC8+の合成に成功し, π-π スタッキングとクーロンビック反発のバランスをとった結果,30%の収量を得ました.
- 固体構造は,ホモフィルの相互作用にとって重要なDAPP2+とExBIPY2+の間の特定の方向と距離を明らかにする.
- 330nmでの光照射は,同時にエネルギーと電子の移転を誘導し,前駆体サイクロファン (DAPPBox4+) よりもより速い運動量を持つ一時的な電荷分離状態を形成します.
結論:
- ホモフィルの相互作用は,DAPPHC8+ホモ[2]キャテナンの自己組織化と安定性の鍵となる.
- DAPPHC8+の硬直で頑丈なアーキテクチャは,効率的な光誘導電子転送を容易にする.
- この研究は,制御された電荷分離と転送を必要とするアプリケーションのためのDAPPベースのMIMの可能性を実証しています.
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