Contact and remote ion radicals formation and recombination

The most general theoretical model of charge separation, after binary ioniz ation in solutions, is developed. The model includes the contact creation o f the exciplexes during encounters of neutral reactants and their generatio n due to association of solvent separated ion pairs. The recombination of s inglet ion pairs to the ground state and triplet ion pairs to the triplet e xcited state of the reactants are also included. The spin conversion in ion pairs is considered as a stochastic process which affects the quantum yiel ds of reaction products. Assuming contact recombination of ions, two altern ative schemes of exciplex production are considered separately and analytic al solutions for all the quantum yields have been found. (C) 1999 Elsevier Science B.V. All rights reserved.