Since these molecular systems show similar parameters and landscape of PESs, we predict that our unified model is able to predict the role of CT state and the coherent effects induced by vibronic interactions to the key molecular motions, which is determined by the energy level of CT state and the vibronic coupling strength. It must be noted that, in extended molecular crystals, uncorrelated bath fluctuations limit the coherence length to a few pentacene molecules at any given instant, which is the basis for the versatility of our dimer model. However, electrostatic polarisation may reduce the energy of CT states, allowing them to mix with S1 states directly . Thus, as our future work, it would be intriguing to observe what effect extending the exciton basis beyond the model pentacene dimer would have on the vibronic couplings.