SERS Study of the Controllable Release of Nitric Oxide from Aromatic Nitrosothiols on Bimetallic, Bifunctional Nanoparticles Supported on Carbon Nanotubes

Patricia Taladriz-Blanco, Laura Rodríguez-Lorenzo, Marcos Sanlés-Sobrido, Pablo Hervés, Miguel A. Correa-Duarte, Ramón A. Álvarez-Puebla, Luis M. Liz-Marzán
ACS Appl. Mater. Interfaces, 2009, 1, 56–59


A hybrid system comprising bimetallic nanoparticles supported on carbon nanotubes (CNTs) was engineered to maximize the surface-enhanced Raman scattering signal from solution by generating a high density of hot spots with reproducible enhancing activity and long-term colloidal and optical stability. CNT@AgAu was employed as a bifunctional material to catalyze and monitor the controlled release of nitric oxide from aromatic nitrosothiols, as a function of the gold content. © 2008 American Chemical Society.