  Understanding electron transfer in organic molecules is of great interest in
quantum materials for light harvesting, energy conversion, and integration of
molecules into solar cells. This, however, poses the challenge of designing
specific optimal molecular structure for which the processes of ultrafast
quantum coherence and electron transport are not so well understood. In this
work, we investigate subpicosecond time scale quantum dynamics and electron
transfer in an efficient electron acceptor Rhodanine chromophoric complex. We
consider an open quantum system approach to model the complex-solvent
interaction and compute the crossover from weak to strong dissipation on the
reduced system dynamics for both a polar (Methanol) and a non-polar solvent
(Toluene). We show that the electron transfer rates are enhanced in the strong
chromophore-solvent coupling regime, being the highest transfer rates those
found at room temperature. Even though the computed dynamics are highly
non-Markovian, and they may exhibit a quantum character up to hundreds of
femtoseconds, we show that quantum coherence does not necessarily optimize the
electron transfer in the chromophore.
