Abstract
A 2,6‐helic[6]arene‐based bistable [2]rotaxane has been designed and synthesized, which incorporates protonated tertiary ammonium salt as a reversible control unit and hexamethylene chain as a second binding site. In particular, it was found that [2]rotaxane could perform as a triply operable molecular switch through addition and removal of fluoride ions (TBAF/NaBArF), protonation and deprotonation of tertiary amine (HBArF/DBU), and altering the solvent polarity. It represents the first triply operable molecular switch based on helic[6]arenes.
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