Benzodifuranone Crystals with Solid‐State Emission Arising from the Introduction of Bulky Substituents

Abstract

Upon introducing bulky aromatic groups into benzodifuranone derivatives, crystals with unprecedented solid‐state emission were obtained. A crystallographic analysis revealed that the emissive properties should most likely be attributed to the absence of stacking between the dye scaffolds. In addition to the solid‐state emission, the compound showed responsivity to external stimuli, i.e., luminescent mechanochromism and thermosalient effect.