Additionally, the spin density plots of the top 20 oligomers (Figures 4 for an example and S6 for the rest of the oligomers) show their biradical nature by the delocalization of the two unpaired electrons. It can be seen, in some oligomers easier than others, that the oligomers show higher spin density towards the edges of the triplet ground-state oligomer. This matches with previous computational studies that showed a similar effect on a polymer that has been experimentally synthesized and characterized as having a triplet ground-state . This effect occurs because of the Coulomb repulsion forces as the two unpaired electrons have the same spin in the triplet state.