Bridged Silsesquioxanes that Self-assemble Forming Functionalized Organic Channels

ROMEO H. E.; FANOVICH, M. A.; WILLIAMS, R. J. J.; MATÌJKA, L.; PLEšTIL, J.; BRUS, J.

MACROMOLECULAR CHEMISTRY AND PHYSICS

Año: 2006

1022-1352

A bridged silsesquioxane was obtained from a precursor synthesized by the reaction of glycidoxypropyl(trimethoxysilane) (2 moles) with cyclohexylamine (1 mol). The polycondensation in the presence of formic acid produced a sef-assembled structure consisting of elongated organic channels accommodating the pendant cyclohexyl fragments, bounded by inorganic ladders. The presence of functional groups in the organic channels (tertiary amine, ether, hydroxyl), can be used to retain small organic molecules capable of forming hydrogen bonds. Aspirin was used as a probe to illustrate this possibility.