title: Supramolecular control of valence-tautomeric equilibrium on nanometer-scale gold clusters.
abstract: This communication describes the preparation and characterization of a valence tautomer complex covalently attached to gold nanoparticles. Variable-temperature IR spectroscopy is used to determine the equilibrium thermodynamic parameters for the valence tautomerization. These results are compared with a nonsurface combined valence tautomer complex. The results show that surface confinement attenuates both DeltaH degrees and DeltaS degrees . We attribute these changes to a reduced accessible molecular surface area.
authors.affiliation: Department of Chemistry, North Carolina State University, Box 8204, Dabney Hall, Yarborough Street, Raleigh, North Carolina 27695-8204, USA.
authors.forename: Sofi
authors.initials: S
authors.lastname: Bin-Salamon
authors.forename: Scott
authors.initials: S
authors.lastname: Brewer
authors.forename: Stefan
authors.initials: S
authors.lastname: Franzen
authors.forename: Daniel L
authors.initials: DL
authors.lastname: Feldheim
authors.forename: Simon
authors.initials: S
authors.lastname: Lappi
authors.forename: David A
authors.initials: DA
authors.lastname: Shultz