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Nanostructuring of Ionic Bridged Silsesquioxanes
Authors:Dr. Amàlia Monge‐Marcet  Dr. Xavier Cattoën  Dr. Philippe Dieudonné  Prof. Dr. Roser Pleixats  Dr. Michel Wong Chi Man
Affiliation:1. Institut Charles Gerhardt Montpellier (UMR 5253 CNRS‐UM2‐ENSCM‐UM1), 8, rue de l'école normale, 34296 Montpellier (France);2. Chemistry Department, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193 Barcelona (Spain);3. Laboratoire Charles Coulomb (UMR CNRS 5521), Université Montpellier 2, 34095 Montpellier Cedex 5 (France)
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.
Keywords:hydrolysis  nanostructures  organosilicas  self‐assembly  sol–  gel processes
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