The DiKTa core in both emitters showed a low degree of planarity because of the presence of the puckered acridone moieties, fused with a common nitrogen. The degrees of puckering between the two emitters are somewhat similar, with angles between the common phenyl ring plane and the peripheral ring planes in the fused acridone of 13.96° and 17.09° in 3TPA-DiKTa and 15.85° and 27.80° in 3DPA-DiKTa. This results in an angle between the peripheral phenyl ring planes of the fused acridones of 24.95° for 3TPA-DiKTa and 41.49° for 3DPA-DiKTa.