where x j is the vibrational quantum number for the j th oscillators, ϵ 0 is the vacuum permittivity, c is the speed of light, a B is the Bohr radius, e is the elementary charge, and HWHM is the half width half maximum of the spectral lineshape. This method has been reported to drastically simplify the modelled of exciton dynamics . The resulting rate constants from this methodology appear qualitatively similar to their counterparts. Shizu & Kaji noted that for the S 1 → S 0 transition in benzophenone, the rate increased by several orders of magnitude to 1.1×10 8 s -1 . On the triplet manifold, while triplet "uphill" transitions from the T 1 state were no larger than 10 3 s -1 , thermally allowed transitions were also noted to have increased by one to two orders of magnitude. It should be noted that the authors reported rate constants at a number of different excited state geometries, for each transition, not just at the Franck-Condon point. Here, we have reported only the rate constant from the Franck-Condon point, as we believe them to be the most relevant.