Fig. 5. In situ UV-vis multi pulse chrono amperommetry (in situ UV-vis MPCA) of phosphine 3a (2.50 mM) in THF/0.1 M [nBu4N][OTf] at a platinum grid electrode in a double compartment cuvette-cell (d = 0.5 mm). Left, bottom: 2D-plot of relative in situ UV-vis spectra during the MPCA measurement (reduction I and re-oxidation II pulses); left, top: relative UV-vis spectra of the reduction product [3a′]2− (red line) and the intermediate 3a′ (black line) of the re-oxidation; right top to bottom: potential profile, chonoamperogramm, chronocoulogramm, chronoabsorptiometry.
