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Reversible Charge Transfer in Liquids at High Excitation Power
Author(s) -
Mikhelashvili Meir S.,
Dodu Marian
Publication year - 1998
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.199800030
Subject(s) - chemistry , excited state , excitation , reaction rate constant , charge (physics) , smoluchowski coagulation equation , atomic physics , kinetics , ion , acceptor , diffusion , nonlinear system , coulomb , constant (computer programming) , molecular physics , thermodynamics , quantum mechanics , electron , physics , organic chemistry , computer science , programming language
We discuss the influence of high excitation power on reversible charge transfer kinetics. The kinetics depends on the excited donor concentration, on the parameters of the rate constants, and on the boundary conditions for the Smoluchowski equation in liquids. The nonlinear effects of the excitation power are determined by the geometry of molecular spectra of emission and absorption. They disappear with the acceptor concentration, with the decrease in the forward rate constant. The role of Coulomb interaction of ions increases with increase of diffusion constant. Nonlinear effects for our theory of reversible charge transfer in liquids are compared with those of Dorfman and coworkers ( J. Chem. Phys . 1989 , 90 , 159). The difference of the effects between the two theories vanishes when the probability of the donor's excited state approaches unity.