D–π–A-type fluorinated tolanes with a diphenylamino group: crystal polymorphism formation and photophysical behavior†
Abstract
Novel D–π–A-type fluorinated tolane with a diphenylamino group was synthesized, yielding two crystal polymorphisms induced by fluorine atoms in the tolane scaffold. The two crystal polymorphisms exhibited distinct photophysical behavior, with one displaying a significant photoluminescence behavior change upon the application of external stimuli.