Morphology and optical responses of SERS active pi-conjugated poly(N-ethyl-2-ethynylpyridinium iodide)/Ag nanocomposite systéme

Abstract

The influence of the poly(N-ethyl-2-ethynylpyridinium iodide) (PEEP-I) concentration on the morphology and optical properties of nanocomposite systems prepared by mixing the polymer solution with a hydrosol of ca. 9 nm Ag nanoparticles (NPs) was investigated by a combination of surface plasmon extinction (SPE) measurements, transmission electron microscope (TEM) imaging and surface-Raman spectroscopy (SERS).

Keywords

• surfice enhanced raman-scattering
• ionic polyacetylenes
• polymerization
• spectroscopy
• spectra
• 2-ethynylpyridine
• clusters
• silver