Mechano-, thermo-, solvato-, and vapochromism in bis(acetato-κ 1 O)[4′-(4-(diphenylamino)phenyl)](2,2′:6′,2′′-terpyridine-κ 3 N,N′,N′′)zinc( ii ) and its polymer

The titled complex exhibits multi-functional luminochromism in the solid state, despite its simple chemical structure. The complex shows solid-state vapochromism and mechanochromism. The polymer analogue of the complex undergoes solvatochromism and thermochromism.