Effect of Polar Organic Vapors on Surface Potential of Au Nanoparticle Aggregates Probed By Surface-Enhanced Raman Scattering of 2,6-Dimethylphenylisocyanide

Abstract

We demonstrate by means of surface-enhanced Raman scattering of 2,6-dimethylphenylisocyanide that the surface potential of Au nanoparticle aggregates changes upon contact with polar organic vapors such as acetone and ammonia by as much as +0.16 and 0.56 V, respectively.