Cooperative Formation of Inorganic-Organic Interfaces in the Synthesis of Silicate Mesostructures
- 3 September 1993
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 261 (5126), 1299-1303
- https://doi.org/10.1126/science.261.5126.1299
Abstract
A model is presented to explain the formation and morphologies of surfactant-silicate mesostructures. Three processes are identified: multidentate binding of silicate oligomers to the cationic surfactant, preferential silicate polymerization in the interface region, and charge density matching between the surfactant and the silicate. The model explains present experimental data, including the transformation between lamellar and hexagonal mesophases, and provides a guide for predicting conditions that favor the formation of lamellar, hexagonal, or cubic mesostructures. Model Q230 proposed by Mariani and his co-workers satisfactorily fits the x-ray data collected on the cubic mesostructure material. This model suggests that the silicate polymer forms a unique infinite silicate sheet sitting on the gyroid minimal surface and separating the surfactant molecules into two disconnected volumes.Keywords
This publication has 10 references indexed in Scilit:
- A new family of mesoporous molecular sieves prepared with liquid crystal templatesJournal of the American Chemical Society, 1992
- Ordered mesoporous molecular sieves synthesized by a liquid-crystal template mechanismNature, 1992
- The Preparation of Alkyltrimethylammonium–Kanemite Complexes and Their Conversion to Microporous MaterialsBulletin of the Chemical Society of Japan, 1990
- X-ray diffraction study of mesophases of cetyltrimethylammonium bromide in water, formamide, and glycerolThe Journal of Physical Chemistry, 1989
- The Solution Chemistry of Zeolite PrecursorsCatalysis Reviews, 1989
- Cubic phases of lipid-containing systemsJournal of Molecular Biology, 1988
- Periodic systems of frustrated fluid films and « bicontinuous » cubic structures in liquid crystalsJournal de Physique, 1987
- NMR Studies of the Chemical Structure of Silicates in SolutionPublished by American Chemical Society (ACS) ,1982
- Replication and Evolution in Inorganic SystemsAngewandte Chemie-International Edition, 1981
- Mica-Type Layer Silicates with Alkylammonium IonsClays and clay minerals (National Conference on Clays and Clay Minerals), 1961