Figure 3. Absorption spectra of MV2+at two different potentials: Solid line: -0.2 V (pure MV2+); dotted line: -0.7 V (MV+ and MV2+). The arrows indicate the change in absorption at -0.7 V.

From

Spectroelectrochemistry of Electrochromic and Electroluminescent Substances with Screen-Printed Electrodes and with an Optically Transparent Platinum Mesh Electrode

Achim Habekost

World Journal of Chemical Education. 2020, 8(2), 71-86 doi:10.12691/wjce-8-2-3