Thermal effect on the voltammogram of 7-ferrocenycarbonyloxy-1-heptanethiol self-assembled monolayer

The loss of ferrocene via nucleophilic attack at various temperatures and resulted that there is an accelerated loss of ferrocene from the chain termini (disappearing of redox peaks) due to increase of temperatures, and the capacitance of the layer in its reduced state and a positive shift in the E1/2 value are observed. A comparison between temperature (activated) data and the effects of multiple scans recorded at room temperature suggests that there is a re-orientation, induced at slightly elevated temperatures, which is associated with the ferrocene ester linkage at the chain terminus and which apparently renders ferrocene more susceptible to nucleophilic attack.