Supramolecular control of valence-tautomeric equilibrium on nanometer-scale gold clusters.
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.
Bin-Salamon
Sofi
S
Department of Chemistry, North Carolina State University, Box 8204, Dabney Hall, Yarborough Street, Raleigh, North Carolina 27695-8204, USA.
Brewer
Scott
S
Franzen
Stefan
S
Feldheim
Daniel L
DL
Lappi
Simon
S
Shultz
David A
DA