Voltammetric characterisation of an insoluble tetrathiafulvalene derivative by means of modified carbon paste electrode

An insoluble tetrathiafulvalene (TTF) derivative is voltammetrically characterised by means of a carbon paste electrode in acetonitrile as solvent. The electrode is modified with the TTF derivative by adding a certain amount to the carbon paste. For the modification of the electrode an amount of about 4 × 10−7 moles of the TTF derivative (only 0.5% with respect to the mass of the carbon paste) is necessary. After the initial oxidation of the modified electrode the characteristic voltammograms of TTF with two oxidation peaks and two corresponding reduction peaks are observed. The influence of anodic treatment is studied and the voltammetric behaviour during the initial oxidation is discussed. The TTF derivative is able to mediate oxidations as shown by the reaction of bromide at the modified electrode.