The electronic structures of studied azobenzenes were described with semiempirical configuration interaction (CI) [including either only single (S) or single and double (SD) excitations within an active orbital space] based on molecular orbitals (MO) obtained from a self-consistent field calculation with floating occupation (FO) numbers using Austin Model 1 (AM1) 36 reparameterized (r) for azobenzene. The method is thus abbreviated as The nonadiabatic dynamics were modeled using the trajectory surface hopping (SH) approach combined with the semiempirical configuration interaction method, 39,40 namely rAM1/FOMO-CI introduced above. The so-called added potential 37 (applied to each monomer) is used throughout, but not the state-specific corrections. The initial conditions (geometries and velocities) were sampled from rAM1/FOMO-CI (CIS for subsequent CIS SH, and CISD for subsequent CISD SH) ground-state Langevin trajectories propagated for 20 ps at T = 300 K with time step of 0.1 fs. 100 geometries were selected starting at 2 ps and sampling every 180 fs. The SH trajectories were propagated for 10 ps with a time step of 0.1 fs. The energy-based decoherence correction was used to remedy overcoherence of the original surface hopping algorithm. The time-dependent electronic wave function was propagated using the local diabatization scheme. For trisazobenzenophane, seven (S 0 -S 6 ) and sixteen (S 0 -S 15 ) electronic states were included in the CIS and CISD simulations, respectively. For the monomer, three electronic states (S 0 -S 2 ) were accounted for (for both