Photoinduced intermolecular electron transfer and off-resonance Raman characteristics of Rhodamine 101/N,N-diethylaniline.

Highlights: [•] Mechanism of PIET reaction process for the Rh101+/DEA system is investigated. [•] The significant geometrical changes of the charge–transfer complex are explained. [•] Forward Electron transfer from DEA to Rh101+∗ occurs with lifetime of 425–560fs. [•] Backward electron transfer occurs with a time constant of 46.16–51.40ps. [•] Intramolecular vibrational relaxation occurs with lifetime of 2.77–5.39ps. [Copyright &y& Elsevier]