Vibrational sum frequency spectroscopy on polyelectrolyte multilayers: Effect of molecular surface structure on macroscopic wetting properties
2015 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 31, no 15, 4435-4442 p.Article in journal (Refereed) Published
Adsorption of a single layer of molecules on a surface, or even a reorientation of already present molecules, can significantly affect the surface properties of a material. In this study, vibrational sum frequency spectroscopy (VSFS) has been used to study the change in molecular structure at the solid-air interface following thermal curing of polyelectrolyte multilayers of poly(allylamine hydrochloride) and poly(acrylic acid). Significant changes in the VSF spectra were observed after curing. These changes were accompanied by a distinct increase in the static water contact angle, showing how the properties of the layer-by-layer molecular structure are controlled not just by the polyelectrolyte in the outermost layer but ultimately by the orientation of the chemical constituents in the outermost layers.
Place, publisher, year, edition, pages
2015. Vol. 31, no 15, 4435-4442 p.
Curing, Interferometry, Molecular structure, Molecules, Multilayers, Phase interfaces, Polyelectrolytes, Chemical constituents, Molecular surfaces, Poly(acrylic acid ), Polyallylamine hydrochloride, Polyelectrolyte multilayer, Solid-air interface, Vibrational sum-frequency spectroscopies, Wetting property
Other Chemistry Topics
IdentifiersURN: urn:nbn:se:kth:diva-166972DOI: 10.1021/la5046207ISI: 000353429300009PubMedID: 25859709ScopusID: 2-s2.0-84928472909OAI: oai:DiVA.org:kth-166972DiVA: diva2:814780
FunderVINNOVASwedish Foundation for Strategic Research
QC 201505282015-05-282015-05-212015-08-05Bibliographically approved