Photogeneration of ions and radicals in non-polar solutions

We present a unified theory of binary photoionization due to remote electron transfer followed by geminate charge recombination to neutral radicals via contact proton transfer. The kinetics of the accumulation and separation of ions and radicals in a non-polar solution were studied numerically and a simple analytical model was used for the interpolation and qualitative interpretation of the results obtained for normal and inverted ionization regions. The time evolution of the charge distribution was used to calculate the number of ion-radicals outside the Onsager radius which are available for FT-EPR registration. The same distribution was used to estimate the broadening of the EPR spectra due to a dipole-dipole magnetic interaction in a radical pair which decreases with their separation.