The resultant deconvolution fits for TIPS-Pn are given in Figs. S14 and S15 of the supplementary material. The two basis spectra fit the TA data well at all times points. Unlike the case of solid TIPS-Pn nanoparticles previously studied, a third absorbing species such as a triplet-pair intermediate or excimer state is unnecessary to fit the data. This result is reasonable for SF in solution,