To thoroughly evaluate the redox properties of the newly synthesized indoloindolizines, we performed electrochemical measurements using both cyclic voltammetry and differential pulse voltammetry (Table , Section S4). These complementary techniques provided detailed insights into the oxidation and reduction behavior of the chromophores, allowing for precise determination of their redox potentials. The estimated bandgaps, calculated from these redox potentials, followed the trends established by optical spectroscopy and theoretical investigations (Figure ). This consistency further validates our chromophore design strategy.