Theory of the Excited State of Molecular Complex in Solution

The excited equilibrium state of molecular complex in solution is described by the use of the nonlinear Schrödinger equation presented in our previous paper. The excited equilibrium state of charge-transfer molecular complex or the equilibrium state of exciplex in polar solvents is quite polar and quite different from the excited Franck-Condon state, and has large tendency to dissociate to solvated ions. These theoretical results are confirmed by the laser photolysis experiments on the excited states of the molecular complexes.