title: A well-defined mesoporous amine silica surface via a selective treatment of SBA-15 with ammonia.
abstract: 2D double-quantum (1)H-(1)H NMR unambiguously shows that the "isolated" ≡Si-OH surface silanols of dehydroxylated SBA-15 are converted upon treatment with ammonia into single silylamine surface site ≡Si-NH(2). The "gem" di-silanols (=Si(OH)(2)) remain intact. Treatment using HMDS produces (=Si(OSiMe(3))(2)) but leaves ≡Si-NH(2) untouched. The resulting surface is hydrophobic and stable.
authors.affiliation: King Abdullah University of Science & Technology, KAUST Catalysis Center, 23955-6900 Thuwal, Saudi Arabia.
authors.forename: Anissa
authors.initials: A
authors.lastname: Bendjeriou-Sedjerari
authors.forename: Jérémie D A
authors.initials: JD
authors.lastname: Pelletier
authors.forename: Edy
authors.initials: E
authors.lastname: Abou-Hamad
authors.forename: Lyndon
authors.initials: L
authors.lastname: Emsley
authors.forename: Jean-Marie
authors.initials: JM
authors.lastname: Basset