Ionization of covalent immobilized poly(4-vinylphenol) monolayers measured by ellipsometry, QCM and SPR
2015 (English)In: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 343, 166-171 p.Article in journal (Refereed) Published
Covalently immobilized poly(4-vinylphenol) (PVP) monolayer films were fabricated by spin coating PVP on perfluorophenyl azide (PFPA)-functionalized surfaces followed by UV irradiation. The pH-responsive behavior of these PVP ultrathin films was evaluated by ellipsometry, quartz crystal microbalance (QCM) and surface plasmon resonance (SPR). By monitoring the responses of these films to pH in situ, the ionization constant of the monolayer thin films was obtained. The apparent plc, value of these covalently immobilized PVP monolayers, 13.4 by SPR, was 3 units higher than that of the free polymer in aqueous solution.
Place, publisher, year, edition, pages
2015. Vol. 343, 166-171 p.
Poly(4-vinylphenol), Monolayer, Perfluorophenyl azide, pH response, Ionization constant
IdentifiersURN: urn:nbn:se:kth:diva-171660DOI: 10.1016/j.apsusc.2015.03.014ISI: 000353381900022ScopusID: 2-s2.0-84928802560OAI: oai:DiVA.org:kth-171660DiVA: diva2:846090
QC 201508142015-08-142015-08-052015-08-14Bibliographically approved