Composition Analysis of Surface-Bound Nanoparticle Monolayers
EMSL Project ID
24797
Abstract
The unique size-dependent optical and electronic properties of metal nanoparticles have generated significant interest in methods to reliably assemble these materials on surfaces. We have previously reported the directed self-assembly of gold nanoparticles on a hafnium-modified silicon dioxide substrate. In addition to allowing the patternable assembly of nanoparticles on an oxide surface, the formation of surface-bound gold nanoparticle monolayers offers a number of other advantages. In our current studies, we are developing modification strategies to tune the interactions of nanoparticle monolayers with the environment, including ligand exchange reactions on surface-bound nanoparticle arrays and a ligand stripping process utilizing UV/ozone for catalysis and sensing applications. Since these surface chemical processes rely on altering the composition of nanoparticle monolayers, X-ray photoelectron spectroscopy is the only capable method in assessing our treatments for oxide surfaces and the composition of the nanoparticle layer.
Project Details
Project type
Large-Scale EMSL Research
Start Date
2007-05-31
End Date
2008-11-04
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members