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dc.contributor.authorAlberti, Sebastian
dc.contributor.authorGiussi, Juan
dc.contributor.authorAzzaroni, Omar
dc.contributor.authorSoler-Illia, Galo J. A. A.
dc.date.accessioned2023-01-09T12:23:16Z
dc.date.available2023-01-09T12:23:16Z
dc.date.issued2022-11-09
dc.description.abstractThe manipulation and understanding of molecular transport across functionalized nanopores will take us closer to mimicking biological membranes and thus to design high-performance permselective separation systems. In this work, Surface-initiated atom transfer radical polymerization (SI-ATRP) of (2-methacryloyloxy)-ethyltrimethylammonium chloride (METAC) was performed on both mesoporous silica and mesoporous titania thin films. Pores were proven to be filled using ellipsometry and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). Furthermore, the employed method leads to a polymer overlayer, whose thickness could be discriminated using a double-layer ellipsometry model. Cyclic voltammetry experiments reveal that the transport of electrochemically active probes is affected by the PMETAC presence, both due to the polymer overlayer and the confined charge of the pore-tethered PMETAC. A more detailed study demonstrates that ion permeability depends on the combined role of the inorganic scaffolds’ (titania and silica) surface chemistry and the steric and charge exclusion properties of the polyelectrolyte. Interestingly, highly charged negative walls with positively charged polymers may resemble zwitterionic polymer behavior in confined environments.en_US
dc.identifier.citationAlberti, Giussi, Azzaroni, Soler-Illia. A Comparative Study of PMETAC-Modified Mesoporous Silica and Titania Thin Films for Molecular Transport Manipulation. Polymers. 2022;14(22)en_US
dc.identifier.cristinIDFRIDAID 2089675
dc.identifier.doi10.3390/polym14224823
dc.identifier.issn2073-4360
dc.identifier.urihttps://hdl.handle.net/10037/28078
dc.language.isoengen_US
dc.publisherMDPIen_US
dc.relation.journalPolymers
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleA Comparative Study of PMETAC-Modified Mesoporous Silica and Titania Thin Films for Molecular Transport Manipulationen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Med mindre det står noe annet, er denne innførselens lisens beskrevet som Attribution 4.0 International (CC BY 4.0)