Charge Regulation in Redox Active Monolayers Embedded in Proton Exchanger Surfaces

RICCI, A.; MARIO TAGLIAZUCCHI; CALVO, ERNESTO J.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS

ROYAL SOC CHEMISTRY

Lugar: CAMBRIDGE; Año: 2012 vol. 14 p. 9988 - 9995

1463-9076

Experimental evidence of the variation in redox potential of osmium pyridine complexes tethered to a Au surface by thiol or diazonium chemistry at different ionic concentration and electrolyte pH is described. The interplay between the charged redox and acid groups is described by a charge regulation model based on PM-IRRAS spectroscopic evidence on the different degrees of surface protonation.