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(a) Transient absorption spectra for pSRII at different delay times. (b) Decay-associated spectra (amplitude spectra) of the recorded transients (pSRII). The spectral characteristics for the 400-fs component displays ground-state bleaching (λ < 520 nm) and excited-state absorption (λ > 520 nm). The 5-ps component shows the signature of a transition between red-shifted photoproducts.
