Thin Films of Zinc Oxide Nanoparticles and Poly(acrylic acid) Fabricated by the Layer-by-Layer Technique: a Facile Platform for Outstanding Properties
2012 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 116, no 7, 4621-4627 p.Article in journal (Refereed) Published
The incorporation of nanoparticles into polyelectrolytes thin films opens the way to a broad range of applications depending on the functionality of the nanoparticles. In this work, thin films of ZnO nanoparticles and poly(acrylic acid) (PAA) were built up using the layer-by-layer technique. The thickness of a 20-bilayer film is about 120 nm with a surface roughness of 22.9 nm as measured by atomic force microscopy (AFM). Thin ZnO/PAA films block UV radiation starting at a wavelength of 361 nm due to absorption by ZnO although the films are highly transparent. Due to their high porosity, these thin films show a broadband antireflection in the visible region, and thus they provide selective opacity in the UV region and enhanced transmittance in the visible region up to the near-infrared region. They are also superhydrophilic due to their high porosity and surface roughness.
Place, publisher, year, edition, pages
2012. Vol. 116, no 7, 4621-4627 p.
IdentifiersURN: urn:nbn:se:kth:diva-92344DOI: 10.1021/jp2095328ISI: 000301156500033ScopusID: 2-s2.0-84857398253OAI: oai:DiVA.org:kth-92344DiVA: diva2:516367
QC 201204182012-04-182012-04-022012-04-18Bibliographically approved