Innenrücktitelbild: Cage‐To‐Cage Transformations in Self‐Assembled Coordination Cages Using “Acid/Base” or “Guest Binding‐Induced Strain” as Stimuli (Angew. Chem. 23/2024)

A cyclically operated three-state supramolecular switching phenomenon is demonstrated by Dillip Kumar Chand et al. (Molecular Architecture Laboratory, IIT Madras) in their Research Article (e202403711). The states A and B represented by guest-bound Pd2L4-type coordination cages are interconvertible upon addition of suitable base/acid. These two states are displayed on the cover against the background of Kashmir Tulip garden. Cationic pyrylium units crafted in a coordination cage are mapped with the polycyclic pyrylium pigments of tulips.