MONOMER-EXCIMER KINETICS IN SOLUTION .2. STATISTICAL NONEQUILIBRIUM THERMODYNAMIC APPROACH

The statistical nonequilibrium thermodynamic theory of diffusion-influ enced reactions is employed to study reversible excimer formation in s olution. Three types of rate coefficients for bimolecular excimer form ation are discussed: (i) molecular rate coefficients defined by one-wa y reactive fluxes, (ii) phenomenological rate constants based on form of the macroscopic rate equations, and (iii) modified, time-dependent phenomenological rate coefficients. Relations are derived linking: (i) the molecular rate coefficients for reversible and irreversible excim er formation rates, and (ii) the steady-state molecular rate constant and the Laplace transform of the time resolved irreversible rate coeff icient. The relationship between the present approach and the microsco pic-stochastic theory of excimer formation is discussed.