title: Permeability of micelles in surfactant-containing MCM-41 silica as monitored by embedded dye molecules.
abstract: Mesoporosu (MCM-41 type) silica containing surfactant-embedded Congo Red has been prepared and tested against gas phase HCl and ammonia, as well as solutions of ionic species; it is shown that the hybrid (organic-inorganic) material is permeable to both gases and ionic species, and can act as a pH indicator and as a selective chelating agent.
authors.affiliation: Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy.
authors.forename: B
authors.initials: B
authors.lastname: Onida
authors.forename: B
authors.initials: B
authors.lastname: Bonelli
authors.forename: L
authors.initials: L
authors.lastname: Flora
authors.forename: F
authors.initials: F
authors.lastname: Geobaldo
authors.forename: C O
authors.initials: CO
authors.lastname: Arean
authors.forename: E
authors.initials: E
authors.lastname: Garrone