eV for tCzBT1B and tCzBT2B, while for tDPABT1B and tDPABT2B they are slightly destabilized to 2.81 and 2.82 eV, respectively. The predicted ΔEST for tDPABT1B, tDPABT2B, tCzBT1B, and tCzBT2B are 0.15, 0.16, 0.10, and 0.12 eV, respectively. As shown in Figure The HOMO and LUMO values of tDPABT1B, tDPABT2B, tCzBT1B and tCzBT2B were determined from the electrochemistry measurements in degassed DMF containing 0.1 M [ n Bu4N]PF6 as the supporting electrolyte and Fc/Fc + as the internal reference (0.45 V vs. SCE, Figure ). The electrochemical data are summarized in Table . The cyclic voltammograms (CV) of the four emitters show irreversible oxidation waves, with oxidation potentials, Eox (vs. SCE) of 0.97, 0.99, 1.08, and 1.08