Preparation and characterization of nano-sized Ag/PVP composites for optical applications

  • G. Carotenuto
  • G.P. Pepe
  • L. Nicolais
Article

DOI: 10.1007/s100510070243

Cite this article as:
Carotenuto, G., Pepe, G. & Nicolais, L. Eur. Phys. J. B (2000) 16: 11. doi:10.1007/s100510070243

Abstract:

A modification of the polyol process has enabled the direct synthesis of nm-sized Ag particles with narrow size distribution and controlled average dimension embedded in a polymeric matrix. Dispersion of colloidal silver was obtained by reduction of silver nitrate in ethylene-glycol in the presence of a polymeric protective agent (i.e., poly(N-vinylpyrrolidone)) and ultrasounds. The final particle size was controlled by removing the colloid from the reactive mixture by addition of acetone. The very strong plasmon resonance peak at 410 nm and a feature at 350 nm in the UV-visible spectra are a clear consequence of the nano-size of dilute Ag particles. The proposed process offers the possibility to effectively use these synthesised materials for the production of colour filters for advanced optical devices.

PACS. 81.05.Ys Nanophase materials - 78.40.Fy Semiconductors - 78.40.Ha Other nonmetallic inorganics 

Copyright information

© EDP Sciences, Springer-Verlag, Società Italiana di Fisica 2000

Authors and Affiliations

  • G. Carotenuto
    • 1
  • G.P. Pepe
    • 3
  • L. Nicolais
    • 1
  1. 1.Institute of Composite Materials TechnologyNational Research CouncilNapoliItaly
  2. 2.Department of Materials and Production EngineeringUniversity of Naples Federico IINapoliItaly
  3. 3.INFM,Department of Physical SciencesUniversity of Naples Federico IINapoliItaly

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