Charge regulation in redox active monolayers embedded in proton exchanger surfaces.
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.
Chemistry Department, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA. aricci@aluar.com.ar
A M
AM
Ricci
M
M
Tagliazucchi
E J
EJ
Calvo