In this paper, we
reconstruct in detail the dynamics
of the emitting
electronic excited state of aqueous indole, investigating its relaxation
mechanism and kinetics to be related to the time-dependent fluorescence
signal. Taking advantage of the results shown in a very recent paper,
we were able to model the relaxation process in solution in terms
of the transitions between two gas-phase singlet electronic states
(1Laand1Lb), subsequently
irreversibly relaxing to the gas-phase singlet dark state (1πσ*). A comparison of the results with the available
experimental data shows that the relaxation mechanism we obtain by
our theoretical-computational model is reliable, reproducing rather
accurately all the experimental observables.