Variable-frequency (0.01-120 MHz) phase and modulation analyses are used to monitor the spectral properties of rhodamine 6G-doped TiO2 spherical particles, yielding information about the entrapping medium. This information is useful in studying the identity of the different rhodamine 6G emitting species and the interaction mechanism on the TiO2 surface. The steady-state fluorescence spectra, as well as the phase and modulation data (lifetimes and fractional intensities and their uncertainties), were also used to study the rhodamine 6G changing properties during the solvent evacuation process (thermal treatment at 70-degrees-C under vacuum conditions) of the doped particles. One- and two-component fits between the experimental and calculated data were compared for the lifetime resolution of the emitting rhodamine 6G molecules, and the results indicate that a two-component fit in the decay law is justified by the experimental phase and modulation data. Great effort was taken to resolve the lifetime and the fractional intensities of the two different rhodamine 6G molecules, which were attributed to the emission states of adsorbed and dissolved species in the particles.