Multiscale Ultraviolet/Visible Absorption Spectroelectrochemistry in Parallel Configuration

High Resolution Image Download MS PowerPoint Slide Ensuring good quality UV/vis absorption measurements is crucial for obtaining reliable information during spectroelectrochemistry (UV/vis-SEC) experiments. One important factor in ensuring this quality is the initial value of the detected light, I 0, which is necessary to define the absorbance (A = −log(I/I 0 )). Low values of I 0 or I can significantly alter the shape of the UV/vis spectra, particularly during the evolution of species with high absorption coefficients. In this work, we developed a new SEC technique, denoted as multiscale UV/vis-SEC, which performs simultaneous optical measurements at different scales, using a dual path length cell, to describe with high reliability the evolution of the reactants and products involved in the electrode process.