The synthesis routes to 3DPA-DiKTa and 3TPA-DiKTa are shown in Schemes S1-S2. The previously reported intermediate 3Br-DiKTa was elaborated with either diphenylamine or triphenylamine donors via a three-fold palladium-catalyzed Buchwald-Hartwig or Suzuki-Miyaura cross-coupling reaction, respectively. The identity and purity of the two emitters were determined using a combination of 1 H and 13 C NMR spectroscopy, high-resolution mass spectrometry, element analysis, high-pressure liquid chromatography (HPLC), single-crystal-XRD and melting point determination (Figures ).