Boosting room-temperature phosphorescence via polarity-induced through-space conjugation in a host–guest doping system

Abstract

We propose a strategy in which polar guest molecules induce through-space conjugation to enhance the room-temperature phosphorescence performance of a host matrix in a host–guest doping system. By incorporating polar coumarin derivatives into aromatic carboxylic acid, strong intermolecular interactions were established via through-space conjugation, leading to a significant extension of the phosphorescence lifetime.