Synthesis of lamellar mesostructured phenylene-bridged periodic mesoporous organosilicas (PMO) templated by polyion complex (PIC) micelles

Abstract : Periodic mesoporous organosilicas (PMOs), obtained by the surfactant-mediated hydrolysis-condensation of bridged organosilanes, combine versatile organic functionalities with advantages of a stable inorganic framework. Here, we introduce a novel synthesis of lamellar mesostructured phenylene-bridged PMOs templated by polyion complex (PIC) micelles (PICPMOs). The micelles assemble by electrostatic interactions between oppositely charged polyelectrolytes, with one being part of a double-hydrophilic block copolymer (DHBC), and the other being a polybase oligochitosan (OC). The PICPMO material was characterized by a range of techniques, including TEM, IR spectroscopy, SAXS, TGA and elemental analysis, which indicates that the material exhibits long-range ordering with an inter-lamellae distance of around 15 nm. Advantages of the synthetic approach developed, together with potential applications of the PICPOs, are discussed.
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https://hal.umontpellier.fr/hal-02043675
Contributeur : Odile Hennaut <>
Soumis le : jeudi 21 février 2019 - 10:46:19
Dernière modification le : mardi 28 mai 2019 - 14:06:15

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Albane Birault, Emilie Molina, Carole Carcel, John Bartlett, Nathalie Marcotte, et al.. Synthesis of lamellar mesostructured phenylene-bridged periodic mesoporous organosilicas (PMO) templated by polyion complex (PIC) micelles. Journal of Sol-Gel Science and Technology, Springer Verlag, 2019, 89 (1), pp.189-195. ⟨10.1007/s10971-018-4667-1⟩. ⟨hal-02043675⟩

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