Time-resolved spin diffusion of quasi-linear excitons in disordered solid DBN

The temporal behavior of holes burned in the band-to-band∣D∣+∣E∣zero-field spin transition of quasi-one-dimensional triplet excitons in doped 1,4-dibromonaphthalene (13 mole% deutero in proto) is studied. The results are characteristic of exciton trapping at monomer X-trap sites and a spectral diffusion process involving cage-to-cage hopping of the excitons