Figure 4.
Stability of C18-Fc layer on a glassy carbon electrode as a function of the applied potential. (top) Charge integration of C18-Fc oxidative wave as a function of (bottom) cyclic voltammogram cycle number with gradually expanding potential window range. The experiment was conducted in 0.1 M NaClO4 containing 135 μM C18-Fc. The stability range observed is indicated with green dashed lines. Gray dashed lines summarize literature-reported potential-dependent stability ranges for covalent modifications described in the main text.