Figure 3.

a) Relative populations of the ³LE state associated with intersystem crossing after excitation into the ¹CT state. The inset is a simplified schematic representation of the model Hamiltonian used. b) The relative populations of the ¹CT state associated with reverse intersystem crossing after initially populating the ³LE state. Black: full model Hamiltonian described in Table S3, green: no HFI, blue: No Vibronic Coupling, red: vibronic coupling increased by 10 %, cyan: energy gap between ³LE and ³CT halved.