Symmetry-based analysis of the effects of random energy disorder on the excitonic level structure of cyclic arrays: application to photosynthetic antenna complexes

An extension of the symmetry-adapted basis defect patterns (BDPs), which is used to analyze the impact of static diagonal and off-diagonal energy disorder on the excitonic structure and spectroscopic features of cyclic arrays of coupled chromophores, was introduced. This follow-up work demonstrated that the BDP approach is most applicable to weak disorder. Findings revealed that interpretation of electric field effects on the B850 and B875 absorption bands must incorporate the influences of energy disorder.