Improving the efficiency of exciplex based OLEDs by controlling the different configurations of the donor

Two new D–A–D-type donor materials with different molecular conformations, 10,10′-(pyridine-2,4-diyl)bis(9,9-dimethyl-9,10-dihydroacridine) and 10,10′-(pyrimidine-2,4-diyl)bis(9,9-dimethyl-9,10-dihydroacridine), were synthesized and applied in exciplex-based OLEDs.