Rational design of dibenzo[a,c]phenazine-derived isomeric thermally activated delayed fluorescence luminophores for efficient orange-red organic light-emitting diodes

Isomeric modulation of thermally activated delayed fluorescence in dibenzo[a,c]phenazine-based (deep) red emitters

“…nitriles) on a rigid acceptor core and assessing how this affects the emission wavelength, PLQY, and TADF efficiency. 32–35 The dibenzo[ a , c ]phenazinedicarbonitrile ( DBPzCN ) acceptor scaffold is often employed in the design of red TADF emitters, and has multiple synthetically accessible sites for donor/acceptor attachment (Fig. 1).…”