Fig. 3: Emission from monomer and oligomers.
From: Lowering of the singlet-triplet energy gap via intramolecular exciton-exciton coupling

Emission of the monomer (a), dimer (b), trimer (d) and tetramer (e) are shown in toluene, DCM and ACN. Emission of all oligomers in toluene are shown in (c). The vertical lines show the energy of the CS state in DCM (blue) and ACN (green) estimated from electrochemistry. Source data are provided as a Source Data file.