J. Phys. Chem. A 2003, 107, 9611-9619
9611
Study of the Interaction of Pollutant Nitro Polycyclic Aromatic Hydrocarbons with Different Metallic Surfaces by Surface-Enhanced Vibrational Spectroscopy (SERS and SEIR) E. A. Carrasco F., M. Campos-Vallette,† P. Leyton,† G. Diaz F.,‡ R. E. Clavijo,† J. V. Garcı´a-Ramos,§ N. Inostroza,† C. Domingo,§ S. Sanchez-Cortes,*,§ and R. Koch# UniVersity of Chile, Faculty of Sciences, PO Box 653, Santiago, Chile, UniVersity of Playa Ancha, Faculty of Science, PO Box 34, V. Valparaiso, Chile, Consejo Superior de InVestigaciones Cientı´ficas (CSIC), Instituto de Estructura de la Materia, Serrano 121, Madrid 28006, Spain, and Department of Chemistry, UniVersity of Oldenburg, D-26129 Oldenburg, Germany ReceiVed: May 7, 2003; In Final Form: September 10, 2003
In this work, we have applied surface-enhanced Raman scattering (SERS) and surface-enhanced infrared spectroscopy (SEIR) to study the interaction of nitro polycyclic aromatic hydrocarbons (NPAHs) with metal surfaces. The nitro group confers the polycyclic aromatic hydrocarbons (PAHs) moiety additional electronic and structural characteristics which verify NPAHs-surface interactions. SERS and SEIR spectra suggest that the NPAHs 1-nitropyrene (1NP) and 2-nitrofluorene (2NF) at concentrations of
