Molecular motors based on stochastic resonance

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Introduction of saw-tooth type potential for a unidirectional rotation was investigated toward the realization of Brownian-Ratchet mechanism. Chiral crown ether was introduced in the crystal so that it produces saw-tooth potential for molecular rotator. Functions associated with the structure were examined. We synthesized trans-syn-trans-dicyclohexano[18]crown-6 and prepared racemic crystals. In the crystal, the crown ether took a favorable conformation for produce saw-tooth type potential. The 4-aminopyridinium salt showed a hysteresis in the temperature dependent dielectric constants.