The corresponding data of 78 nm and 4 nm films is shown in the Supporting Information in Figure . Similar observations hold true for the bleach of the C exciton as well as the induced absorption between the C and B excitons. The induced absorption at around 700 nm reaches a maximum at -1.1 V, after which it decreases again. We observe a small broad bleach with a minimum at 735-740 nm for potentials of -1.3 V to -1.7 V, which transitions into a weak induced absorption for reductive potentials > |-2.0 V|.