A polymorphic pentiptycene-containing gold(i) isocyanide complex: solvent- and conformation-dependent supramolecular luminescence†
Abstract
Four crystalline (pseudo)polymorphs of [Ph–Au–CN–Phip–OC8H17] (1), where Phip = central phenylene of pentiptycene, reveal that the π-backbone conformation relative to the Au⋯Au bonding axis is important in determining the energy and efficiency of the supramolecular luminescence, which offers mechanistic insights into the luminescence mechanochromism and vapochromism and the solvent-dependent aggregation-induced emission (AIE) of 1.