This data folder concerns the publication: "Ultrafast dynamics of a bimolecular organocatalysed photoredox reaction" by Daisuke Koyama, Harvey Dale and and Andrew Orr-Ewing The separate folders contain raw data as csv format files from the steady state/transient UV/visible and IR spectroscopy experiments performed using the ultrafast laser system at the University of Bristol. Emission (8 files) - contains steady-state emission spectra of PCF in DCM, toluene, ethanol and acetonitrile, and emission spectra for solutions of PCF in DCM following the addition of 2,5-dimethylhexa-2,4-diene, cyclohexa-1,3-diene and styrene. FTIR (16 files) - contains steady-state FTIR spectra of DCM, toluene-d8, MBP in toluene-d8, PCF in toluene-d8, PCF and MBP in toluene-d8, and FTIR spectra of PCF and PCH in DCM solution following titration with iron(III) chloride (FeCl3). UVvis (12 files) - contains steady state electronic absorption spectra of PCF and PCH in DCM, and electronic absorption spectra of PCF and PCH in DCM solution following titration with iron(III) chloride (FeCl3) TEAS (18 files) - contains raw data of transient electronic absorption spectra for: (i) toluene, DCM, MBP in DCM; (ii) PCF in DCM, toluene and DMF; (iii) PCF and MBP in DCM, toluene and DMF; (iv) PCH in DCM, toluene and DMF; (v) PCH and MBP in DCM, toluene and DMF; and (vi) concentration dependence study of PCF and MBP in DCM. TVAS (17 files) - contains raw data of transient vibrational absorption spectra for: (i) MBP in DCM; (ii) PCF in DCM and DMF; (iii) PCF and MBP in toluene and DCM, including a concentration dependence study in DCM; (iv) PCH in DCM; (v) PCH and MBP in toluene and DCM, including a concentration dependence study in DCM. The file titles provide information on the sample composition and concentration, the excitation wavelength (in nm), the spacer thickness in the sample cells (in microns), and the UV pump laser pulse energy (in nJ). In the .csv files for time resolved experimental data sets, column A contains wavenumber in cm-1 (for TVAS experiments) or wavelength in nm (for TEAS experiments). For columns B onwards, the top row of entries contains time delays in ps. All other entries are changes in optical density.