A gelable pure organic luminogen with fluorescence-phosphorescence dual emission

Abstract

Pure organic luminogens with room temperature phosphorescence (RTP) have drawn much attention due to their fundamental importance and promising applications in optoelectronic devices, bioimaging, sensing, etc. Fluorescence-phosphorescence dual emission at room temperature, however, is rarely observed in pure organic materials. Herein, we reported a metal- and heavy-atom free pure organic luminogen with tert -butyl groups, D t BuCZBP, which is ready to form organogels in dimethylsulfoxide (DMSO). It emits prompt and delayed fluorescence, as well as RTP, namely dual emission in as-prepared solid, gels and polymeric films. To the best of our knowledge, it is the first example of metal- and heavy-atom free pure organic gelator with RTP emission. Such unique RTP and moreover dual emission properties in different states make D t BuCZBP a potential material for diverse applications.