Cyclic Voltammetry Analysis

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General description of CV measurement routines

1. measurement of a blank (solvent with electrolyte) sample (facultative)
2. the analyte is added and measured
3. Fc or other (e.g. Me₁₀Fc) reference is added and measured.

Hint: Polish the working electrode (glassy carbon or others e.g. platinum) and degas (with solvent saturated Ar, at least 5 min, or N2) between the runs.

Shifting Potentials

Because the measured potentials are strongly dependent on the reference electrode, it's important to shift your potentials and report them against a well-known reference. The following references are recommended:

1. Ferrocene and setting the Fc⁺/Fc couple to 0 V
2. SCE and setting the Fc⁺/Fc couple to 0.38 V (value for Fc in MeCN)

Inline notation

CV (1 mM in MeCN vs. Ref (Fc⁺/Fc) = 0 V, ν = 0.1 V/s, to neg.): E_1/2 ([Cu(TMGqu)2]²⁺/[Cu(TMGqu)2]⁺, ΔE_p) = −0.44 V (90 mV)

Details: