Effect of the exciton coupling on the optical and photophysical properties of face-to-face porphyrin dimer and trimer: a treatment including the solvent stabilization effect

A treatment of the exciton coupling interaction including the solvent stabilization effect is given. The method is successfully applied to porphyrin dimer and trimer. the maxima of the Soret bands can be predicted with a high accuracy. The effect of exiton coupling on the photophysical properties of basket handle cofacial, doubly linked porphyrin dimer and trimer is investigated and compared to that in the singly linked dimer