運動機能をもつ自己集合性超分子金属錯体

書誌事項

タイトル別名
  • Self-Assembled Metallo-Supermolecules with Motional Functions
  • ウンドウ キノウ オ モツ ジコ シュウゴウセイ チョウブンシ キンゾク サクタイ

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説明

In this account, the construction of metallo-supermolecules that behave like machinery is described. A trinuclear Ag (I)-molecular ball bearing is a ligand exchange-driven molecular device. In this complex, two rotor molecules are connected and coaxially arranged by three Ag (I) ions and they can freely rotate relative to each other though cooperative ligand exchange reactions around Ag (I) ions. Furthermore, for a long-range transmission of rotational motion between two rotors 1.5 nm apart from each other, a helical transmitter that can precisely correlate the motions of two terminal rotors was successfully constructed. The motions of two rotors connected with both sides of the transmitter were proven to strongly correlate with each other through a cascade helix inversion of the central transmitter. The structures of these entities were characterized by solution-phase NMR and mass measurements and by a single-crystal X-ray analysis. Moreover, the motions of these supermolecules in solution were analyzed by variable-temperature 1H NMR spectroscopy.

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