Trimorphism in solid resorcinarenes.

Nonylresorcinarene, in contrast to methylresorcinarene and nonylpyrogallene, exists in three isolable phases: a layer structure, a hexamer and an amorphous phase; the three are in thermal equilibrium.

Changing surface hydro- and oleophobicity with resorcinarene multilayers-a simple water/oil proofing process.

Resorcinarenes (resorcinol-aldehyde tetramers) of appropriate structures have been shown to change the hydro- and oleophilicities of a variety of surfaces. The phenomenon results from attachment of the rim of the bowl-like molecules to hydrophilic surfaces. Hydrophobic (alkyl) and oleophobic (perfluoro alkyl) "legs" attached to the bowls then determine the immediate surface property.