Complexation of Triptycene‐Derived Macrotricyclic Host Containing Pyridine Groups with Paraquat Derivatives: A Switchable Process Controlled by Zn2+ Ions

Abstract A triptycene‐derived macrotricyclic host containing two pyridine groups was synthesized, and it could form 1:1 stable host‐guest complexes with paraquat derivatives in both solution and solid state. Moreover, it was also found that binding and releasing of the guest molecules in the complexes could be efficiently controlled by zinc ions.