Qm. Wang et Dw. Bruce, CONTROL OF INTERMOLECULAR PORPHYRIN PI-PI INTERACTIONS - LOW-MELTING LIQUID-CRYSTAL PORPHYRINS WITH CALAMITIC MESOPHASES, Chemical communications, (22), 1996, pp. 2505-2506
By control of intermolecular pi-pi interactions using 'fly-over' chain
s, calamitic nematic mesophases are observed in 5,15-disubstituted zin
c porphyrins with greatly reduced melting and clearing points.