Accessibility to gases of dye molecules in hybrid surfactant-silica mesophases

B Onida, L Borello, S Fiorilli, C Barolo, K J Edler, C Otero-Arean, E Garrone

Research output: Chapter or section in a book/report/conference proceedingChapter or section


Two types of CTABr-silica mesophases have been prepared, one of them a powder with hexagonal structure containing Congo Red, another one a film with cubic structure containing Disperse Red 1. In the former case the dye has been occluded via co-entrapping, whereas in the latter it has been covalently anchored to the silica matrix via a co-condensation route. In both systems, the dye molecules proved to be accessible to NH3, HCl and (CH3)(3)N in the gas phase, notwithstanding the presence of micelles in the mesophase, which results to be fully permeable to such molecules.
Original languageEnglish
Title of host publicationRecent Advances in the Science and Technology of Zeolites and Related Materials, Pts a - C
Number of pages7
Publication statusPublished - 2004

Publication series

NameStudies in Surface Science and Catalysis


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