Plasmonics

, Volume 8, Issue 1, pp 159–165

Direct Fabrication Route to Plastic-Supported Gold Nanoparticles for Flexible NIR-SERS

Authors

    • Institute of Inorganic Methodologies and Plasmas, IMIP-CNRUniversity of Bari
  • Maria Losurdo
    • Institute of Inorganic Methodologies and Plasmas, IMIP-CNRUniversity of Bari
  • Maria M. Giangregorio
    • Institute of Inorganic Methodologies and Plasmas, IMIP-CNRUniversity of Bari
  • Pio Capezzuto
    • Institute of Inorganic Methodologies and Plasmas, IMIP-CNRUniversity of Bari
  • Giovanni Bruno
    • Institute of Inorganic Methodologies and Plasmas, IMIP-CNRUniversity of Bari
Article

DOI: 10.1007/s11468-012-9458-x

Cite this article as:
Bianco, G.V., Losurdo, M., Giangregorio, M.M. et al. Plasmonics (2013) 8: 159. doi:10.1007/s11468-012-9458-x

Abstract

Stable gold nanoparticles with surface plasmon resonance tunable from visible (Vis) to near-infrared (NIR) are deposited via a direct sputtering methodology on large area polyethylene terephthalate (PET) to be used as effective, flexible NIR surface-enhanced Raman scattering (SERS) substrates. An O2 plasma treatment of PET is used to tailor growth dynamics, geometry, and plasmonic properties of nanoparticles. The O2 plasma treatment of PET results also in effective improvement of nanoparticle anchoring on the plastic substrate, providing more stable, flexible SERS systems. The functionality of fabricated SERS substrates has been tested using benzylthiol, and SERS enhancement factors in the range 104 have been achieved, which are comparable with those reported in literature for gold nanostructures fabricated on silicon substrate. These results attest the great potentiality of this methodology for the production of cost-effective flexible and reusable large-scale SERS substrates.

Keywords

NIR-SERSGold nanoparticlesPlastic substrateO2 plasma

Copyright information

© Springer Science+Business Media New York 2012