A solution is to use multi-resonant TADF (MR-TADF) emitters. MR-TADF emitters are typically based on p-and n-doped nanographenes and so possess a rigid molecular structure. The ingenious molecular design places each of the frontier molecular orbital (FMOs) on adjacent atoms thus leading to short-range charge transfer (SRCT) between adjacent atoms, inducing the small ΔEST to turn on TADF. The SRCT excited state that results from the transition from the HOMO to the LUMO coupled with the small reorganization energy result in narrowband emitters. Since the first examples of this class of emitter, documented in 2016 by Hatakeyama and co-workers, more than 200 distinct examples have been reported, most of which show blue and green emission. We previously demonstrated that decorating a MR-TADF core with peripheral donor groups can result in emission tuning. However, when too strong donors are employed then the lowest energy excited states are no longer SRCT and the narrowband emission is lost. Rather, the emissive excited state becomes long-range CT (LRCT) that is typically observed in donor-acceptor TADF compounds. The aforementioned reports evidence of emission tuning from 462 to 608 nm using a peripheral decoration strategy on the MR-TADF core; nevertheless, examples of red-emitting MR-TADF emitters remain rare.