Reduced reactivity of aged au nanoparticles in ligand exchange reactions.
Solutions of alkanethiol-protected Au nanoparticles undergo a slow aging process over a period of several days, which dramatically reduces their reactivity in a place-exchange reaction with disulfides. This behavior was tentatively attributed to the reorganization of the most reactive binding sites (e.g., defect sites) on the nanoparticle surface.
Chechik
Victor
V
Department of Chemistry, University of York, Heslington, York YO10 5DD, UK. vc4@york.ac.uk