Fig. 3. As the porphyrin dimer becomes excited, energy transfer occurs to the ring with the same rate (∼1.3 ps) no matter its size (N = 6, 8, 10, 12 or 30). A representation of the line-dipole model on the right shows the effect of strain induced by coordination. The transferred excitation is delocalized over 6 porphyrins. Adapted with permission from ref. 50.
