title: New insights into the initial steps of the formation of SBA-15 materials: an in situ small angle neutron scattering investigation.
abstract: Time-resolved in situ SANS investigations have provided direct experimental evidence for the three initial steps in the formation of the SBA-15 mesoporous material: an induction period is followed by a shape transformation of the micelles from spherical to cylindrical ones followed by the precipitation of a two-dimensional hexagonal phase.
authors.affiliation: Laboratoire de Physique de Solides, UMR 8502, Bât. 510, Université Paris-Sud, 91405 Orsay Cedex, France. imperor@lps.u-psud.fr
authors.forename: Marianne
authors.initials: M
authors.lastname: Impéror-Clerc
authors.forename: Isabelle
authors.initials: I
authors.lastname: Grillo
authors.forename: Andrei Y
authors.initials: AY
authors.lastname: Khodakov
authors.forename: Dominique
authors.initials: D
authors.lastname: Durand
authors.forename: Vladimir L
authors.initials: VL
authors.lastname: Zholobenko
mesh_terms: D004578:Electron Spin Resonance Spectroscopy; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D008823:Micelles; D046529:Microscopy, Electron, Transmission; D008968:Molecular Conformation; D008970:Molecular Weight; D009502:Neutrons; D012542:Scattering, Radiation; D012822:Silicon Dioxide / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D014965:X-Rays
chemical_list: D007202:Indicators and Reagents; D008823:Micelles; C509969:SBA-15; D012822:Silicon Dioxide