Polarization of Triplet Factor Group States

Abstract

An account of the polarization of triplet factor group, or dimeric, states is given. It is shown that in the presence of a twofold axis the resulting plus (symmetric) and minus (antisymmetric) states are not generally uniquely polarized along the C2 and perpendicular to the C2, respectively. This arises because of the spin correlation induced by the exciton exchange interactions. The intensities can be reduced to geometric parameters and predictions and comparisons with experiment are made for naphthalene, anthracene, and phenazine crystals.