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Permeability of micelles in surfactant-containing MCM-41 silica as monitored by embedded dye molecules
1Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy.
Chemical Communications (Cambridge, England)
|September 21, 2002
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.