Excitations and optical properties of phenylene based polymers: effects ofelectric field.

For phenyl based polymers we describe the absorption underlying effects of the long range Coulomb interactions -for both bound and free e - h states a t weak and moderately strong electric fields when higher excited states are destroyed while the primary one is preserved for which we have found the i onization probability. The theory is based on analyzing the series of excit ons as weakly bound states of delocalized electron and a hole.