Fig. 4
From: Switching between H- and J-type electronic coupling in single conjugated polymer aggregates

PL spectra and PL decays of single chains and single aggregates. Normalized PL spectra, transient PL decays, and spectral FWHM values extracted from the spectra in Fig. 3 and plotted in a histogram with 10 meV bin size for single molecules a–c and single aggregates d–f of PPEB-1 (red), PPEB-2 (orange), and PPEB-3 (green) in PMMA measured in air. Transient PL decays were fitted with an exponential plus an offset to account for the background, yielding the PL lifetimes stated in b and e