Thermoresponsive shuttling of rotaxane containing trichloroacetate ion |
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| Authors: | Yoko Abe Hisashi Okamura Kazuko Nakazono Yasuhito Koyama Satoshi Uchida Toshikazu Takata |
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| Institution: | Department of Organic and Polymeric Materials, Tokyo Institute of Technology , 2-12-1 (H-126), Ookayama, Meguro, Tokyo 152-8552, Japan. |
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| Abstract: | A thermoresponsive rotaxane shuttling system was developed with a trichloroacetate counteranion of an ammonium/crown ether-type rotaxane. Chemoselective thermal decomposition of the ammonium trichloroacetate moiety on the rotaxane yielded the corresponding nonionic rotaxane accompanied by a positional change of the crown ether on the axle. The rotaxane skeleton facilitated effective dissociation of the acid, markedly lowering the thermal decomposition temperature. |
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