We then carried out spin-component scaling second-order algebraic diagrammatic construction calculations at the SCS-ADC2/cc-PVDZ level to obtain accurate excited-states energies and electron densities for tDPABT1B, tDPABT2B, tCzBT1B, and tCzBT2B. The SCS-ADC2 calculations predict similar T1 energies of around 2.65 eV for the four emitters. The S1 energies are 2.74 and 2.76