Silver nanoparticles dispersed in polyimide thin film matrix
A new metallorganic silver precursor, Ag(hfa)tetraglyme, has been used to produce silver aggregates into polymeric thin film matrices by thermal reduction in a temperature range between 200 °C and 300 °C. Here we present a characterization of the metal aggregates into polyimide thin films (0.1–1 μm). The size of the metallic particles has been measured by transmission electron microscopy (TEM). A narrow particles size distribution centered around a radius value of ~ 16 nm has been observed. X-ray diffraction (XRD) performed on this sample confirms the presence of metallic silver. X-ray photoelectron spectroscopy (XPS) has been used to determine the elemental composition at the particle surface. A partial oxidation of the metal particles, probably due to the air contamination or to interaction with oxygen of the polymeric matrix, has been observed.
PACS72.80.G Transition metal compounds 71.20.Rv Polymers 82.30.N Cluster formation in chemical reactions
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