Y. Furusho et T. Aida, GUEST-RESPONSIVE STRUCTURAL-CHANGES OF PORPHYRINOGEN INCLUSION CRYSTALS - A LONG-RANGE COOPERATIVE EFFECT ON GUEST INCLUSION, Chemical communications, (22), 1997, pp. 2205-2206
meso-Octaethylporphyrinogen inclusion crystals with lower alcohols und
ergo reversible guest-responsive structural changes, for which a long-
range cooperative effect with a Hill coefficient of 40 is observed.