Patent ID: 7217846
Filing Date: 2007-05-15
Classification: A61K,B82Y,C07C

Abstract:
1. A composition of matter comprising a guest-host assembly having: (a) a host assembly formed of calixarene molecules in a crystallographic assembly of layers of said calixarene molecules stacked along the c axis of said assembly in a repeating configuration associated together predominantly by van der Waals forces, said crystallographic assembly being stable at a temperature of at least 40° C.; (b) a guest component located within said host assembly and transferable through said host assembly in a direction normal to said stacked layers; and (c) said calixarene molecules being configured in bilayers of adjacent layers of said calixarene molecules along the c axis of said assembly, said bilayers being shifted along the a or b axis of said assembly relative to a corresponding assembly of said calixarene molecules without the inclusion of said guest component to provide a unit cell c axis which is less than the unit cell c axis of said corresponding assembly of said calixarene molecules.