). Though this should be taken with a grain of salt in view of the approximations considered in the model, we note that including non-local exciton-phonon couplings brings the predicted diffusion coefficient closer to the value measured in highly organized P3HT nanofibers (and therefore away from the thin film results); a similar observation of the effect of non-local exciton-phonon coupling has been reported earlier in the study of exciton transport within molecular crystals .