Masatsugu Taneda, Katsuyuki Shizu, Hiroyuki Tanaka and Chihaya Adachi
Chem. Commun., 2015,51, 5028-5031
DOI:
10.1039/C5CC00511F,
Communication
A trigonal donor–acceptor molecule of 1,3,5-tris(4-(diphenylamino)phenyl)-2,4,6-tricyanobenzene (3DPA3CN) was synthesized to exhibit efficient thermally activated delayed fluorescence. By doping 3DPA3CN into a wide energy gap host, the film had a photoluminescence quantum efficiency of 100% with the reverse intersystem crossing efficiency of 100%. An OLED including the emitter exhibited a very high external quantum efficiency (ηEQE) of 21.4%.