Sky‐Blue Emitters With Four Fluorene Arms Exhibiting High Hole Mobilities and Thermally Activated Delayed Fluorescence for Efficient Organic Light Emitting Diodes and Detection of Nitroaromatic Explosive Compounds
New donor–acceptor–donor type emitters, N,N,N',N'‐tetrafluoren‐2‐yl‐4,4'‐diaminobenzophenone (FABP) and its ethyl‐containing counterpart (EFABP) are reported as thermally activated delayed fluorescent (TADF) emitters. The study of photophysical properties of both the compounds reveal the coexistence of multiple emi...