In Figure (solid blue line) the evolution of the absorbance at this wavelenght during the CV is plotted. This kind of representation is known as VoltaAbsorptogram (VA). The VA at 261nm in parallel configuration (VAp261) confirms that the vanishing of the TDMQ20 takes places at potentials > +0.40 V. During the experiment, the evolution of other positive absorption bands, corresponding with the oxidation products of TDMQ20, is also observed (Figure and). Two main absorption bands centered at 240 and 289 nm can be detected. The VAp289 reveals the evolution of this band during the oxidation of TDMQ20. Since this band is observed both in parallel and normal configuration, it can be concluded that this band corresponds to a soluble product of the oxidation of TDMQ20. Similar conclusions can be obtained for the band centered at 240 nm (VAp240, Figure ).