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A Novel Pentiptycene Bis(crown ether)-Based [2](2)Rotaxane Whose Two DB24C8 Rings Act as Flapping Wings of a Butterfly

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journal contribution
posted on 04.04.2014, 00:00 by Ying-Xian Ma, Zheng Meng, Chuan-Feng Chen
A novel [2](2)­rotaxane based on pentiptycene-derived bis­(crown ether) can be efficiently synthesized via a “click chemistry” method and the subsequent N-methylation. Due to the different affinities of DB24C8 with the ammonium and triazolium stations, the wing-flapping movement of the DB24C8 “wings” in the [2](2)­rotaxane can be easily achieved by acid/base stimulus.