that connects to the Generalized-Born models for solvation, where the Coulombic interaction of one chromophore atomic charge with another is damped by the implicit solvent. To the extent that the optical dielectric constant portion of solvent response (i.e. fast solvent degrees of freedom) is always accounted for in the modeling of molecular absorption and emission, implicit-solvent models also capture the chromophore→solvent polarization (i.e. "backward" polarization) whereby the chromophore polarizes the solvent electron density through the surrogate screening charges.