Synthetic Molecular Gear Based on Double-Decker Porphyrin Complexes

Soichiro Ogi, Tomohiro Ikeda, Masayuki Takeuchi

研究成果: ジャーナルへの寄稿学術論文査読

10 被引用数 (Scopus)


New rotary molecular machines (1 and 2) were synthetically constructed from two distinct porphyrin-based rotors, a cerium(IV) bis(porphyrinate)s double-decker (CeDD) and a porphyrinatorhodium(III)-based rotor. These rotors are adjacently mounted on rotational axes aligned to near vertical as resembling the bevel-gear-shaped structure. Structural study using NMR analysis reveals that these distinct rotors are connected through a coordination bond between rhodium(III) and a pyridyl group. At temperature from 193 to 393 K, each rotor represents rotational motion driven by heat fluctuation without decomposition into the corresponding precursors in dichloromethane-d2 and tetrachloroethane-d4. Importantly, the mechanical interaction between the teeth of these rotors is strongly dependent on the central metal atom in a DD rotor and the teeth structure in a porphyrinatorhodium(III)-based rotor. Understanding such relationship between the chemical structures and mechanical interaction is of importance for generating cooperative motion in the hybrid machinery system.

ジャーナルJournal of Inorganic and Organometallic Polymers and Materials
出版ステータス出版済み - 2013 1月


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