title: Interfacial bonding in a CdS/PVA nanocomposite: A Raman scattering study.
abstract: Raman spectroscopy is employed to characterize the bonding between CdS nanoparticles (NPs) and a polyvinyl alcohol (PVA) as well as structural changes in the polymeric matrix caused by incorporation of NPs. It is shown that after the formation of CdS NPs the vibrations of carbonyl groups in acetate residuals of PVA and of C-O groups at the macromolecules ends disappear. Formation of NPs also leads to an increased degree of hydrogen bonding and crystallinity of the hybrid material as compared with the unloaded polymer. The observed changes are ascribed to the formation of coordinative bonds and hydrogen between the CdS nanoparticles and polymeric macromolecules. The scheme of this interfacial bonding is also proposed.
authors.affiliation: V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine, 45, Pr. Nauky, Kiev 03028, Ukraine.
authors.forename: Galyna Yu
authors.initials: GY
authors.lastname: Rudko
authors.affiliation: V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine, 45, Pr. Nauky, Kiev 03028, Ukraine. Electronic address: andriy_kovalchuk@yahoo.com.
authors.forename: Andrii O
authors.initials: AO
authors.lastname: Kovalchuk
authors.affiliation: Department of Biophysics and Medical Informatics, Bukovinian State Medical University, 42 Kobylyanska st., 58000 Chernivtsi, Ukraine.
authors.forename: Volodymyr I
authors.initials: VI
authors.lastname: Fediv
authors.affiliation: Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden.
authors.forename: Weimin M
authors.initials: WM
authors.lastname: Chen
authors.affiliation: Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden.
authors.forename: Irina A
authors.initials: IA
authors.lastname: Buyanova
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry*; D003460:Crystallization; D006860:Hydrogen Bonding; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D011142:Polyvinyl Alcohol / Q000737:chemistry*; D018036:Selenium Compounds / Q000737:chemistry*; D013059:Spectrum Analysis, Raman
chemical_list: D019187:Cadmium Compounds; D018036:Selenium Compounds; D011142:Polyvinyl Alcohol; C058667:cadmium selenide
keywords: CdS; Interface; Nanoparticle; Polymer