Abstract
We have carried out the X-ray photoemission study of dodecanethiolate-(DT-) passivated Ag nanoparticles supported on the highly oriented pyrolytic graphite (HOPG) substrates. From detailed line-shape analyses of Ag 3d core-level photoemission spectra of DT-passivated Ag nanoparticles, it is found that Ag 3d core-level spectra consist of the two components. We attribute these components to the inner Ag atoms and surface Ag atoms bonded to surface dodecanethiolates. Furthermore, we have investigated the nanoparticle-diameter-dependent valence-band photoemission spectra. From these results, we discuss the electronic properties of DT-passivated Ag nanoparticles.
