title: Nanostructuring of ionic bridged silsesquioxanes.
abstract: The transformation by hydrolysis/condensation of four new mesityl-(bis or tris)imidazolium-based alkoxysilane precursors into their corresponding bridged silsesquioxanes has been investigated. These precursors feature urea groups and either short or long alkylene chains, which are known to favor self-assembly. The most regular nanostructures were obtained by a combination of the tripodal precursors with C10H20 alkylene chains, as shown by powder X-ray diffraction (PXRD) analysis, independent of the reaction conditions.
authors.affiliation: Institut Charles Gerhardt Montpellier (UMR 5253 CNRS-UM2-ENSCM-UM1), 8, rue de l'école normale, 34296 Montpellier, France.
authors.forename: Amàlia
authors.initials: A
authors.lastname: Monge-Marcet
authors.forename: Xavier
authors.initials: X
authors.lastname: Cattoën
authors.forename: Philippe
authors.initials: P
authors.lastname: Dieudonné
authors.forename: Roser
authors.initials: R
authors.lastname: Pleixats
authors.forename: Michel
authors.initials: M
authors.lastname: Wong Chi Man
keywords: hydrolysis; nanostructures; organosilicas; self-assembly; sol-gel processes