Abstract
Copper nanoparticles (Cu NPs) were made by electroless deposition on Ge disks as substrates for surface-enhanced infrared absorption (SEIRA). Previous X-ray photoelectron spectra had shown that elemental copper is deposited on the Ge substrate and that the nanoparticulate film remains resistant to oxidation even after several days of air exposure at room temperature. SEIRA spectra of <i>p</i>-nitrothiophenol (<i>p</i>-NTP) adsorbed on the copper nanoparticles were measured. Freshly made substrates made by electroless deposition gave higher enhancements than both the 12-day-old oxidized substrates and substrates made by physical vapor deposition. The intensity of the antisymmetric NO<sub>2</sub> stretching band of <i>p</i>-NTP relative to that of the symmetric stretch was significantly higher for <i>p</i>-NTP adsorbed on copper than on silver nanofilms, indicating that the C<sub>2</sub> axis of the aromatic ring is tilted with respect to the copper surface.
PDF Article
More Like This
RF sputtered amorphous chalcogenide thin films for surface enhanced infrared absorption spectroscopy
F. Verger, V. Nazabal, F. Colas, P. Němec, C. Cardinaud, E. Baudet, R. Chahal, E. Rinnert, K. Boukerma, I. Peron, S. Deputier, M. Guilloux-Viry, J.P. Guin, H. Lhermite, A. Moreac, C. Compère, and B. Bureau
Opt. Mater. Express 3(12) 2112-2131 (2013)
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription