In addition to the ammonium–crown ether recognition, π-stacking interactions between the C₆₀ sphere and the porphyrin moiety have been evidenced in a supramolecular complex obtained from a porphyrin–crown ether conjugate and a fullerene derivative bearing an ammonium unit.

The synthesis and both spectroscopic and electrochemical studies of a bis-porphyrinic tweezer are reported, as well as the insertion of Lewis base guests into the host bis-porphyrinic cavity, monitored through physico-chemical characteristics.

Multiple charge-separation sites have successfully been constructed using supramolecular complexes of multiporphyrinic oligopeptides [P(ZnP)_n, n = 2, 4, 8] with fulleropyrrolidine bearing a pyridine or imidazole coordinating ligand, which are organized by utilizing π–π interaction in addition to the coordination bond.