Fig. 4: Femtosecond transient absorption of Ph(Tc-Py) and Ph(Tc-Py-H+) in toluene.
From: Reversible gating of singlet fission by tuning the role of a charge-transfer state
Femtosecond transient absorption spectroscopy of (a–c) Ph(Tc-Py) and (d–f) Ph(Tc-Py-H+) in argon-saturated toluene at room temperature. a, d Heat map of the recorded differential absorption spectra at various time delays between 0 to 7000 ps after photoexcitation at 510 nm. b, e Evolution-associated spectra (EAS) and insert that depicts time absorption profiles as well as corresponding fits of selected wavelengths (see Figure legend for details). c, f The relative population of the respective species with colors correlating with the evolution-associated spectra (EAS). Source data are provided as a Source Data file.
