The calculation of the one photon absorption energies, oscillator strength (f) and the fluorescence emission of PPAB (1-3) molecules are performed using the TDDFT method. As the change in solvent polarity is likely to result in a substantial alteration of the optical characteristics of ICT-based molecules , we go beyond gas-phase calculations to investigate the impact of a continuum dielectric on the electronic structure and properties, such as, dipole 2.0 (f=0.88)