We next investigated the optoelectronic properties in dilute DMF solution. The energies of FMOs were inferred from the electrochemistry, where the oxidation and reduction potentials (Eox/Ered) were obtained using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) in deaerated DMF (Figure ). 2GtBuCzCO2HDCzB exhibits two irreversible oxidation waves with Eox of 1.06 and 1.21 V determined from the DPV peak values, which are ascribed to the oxidation of DtBuCzB core (1.03 V) and the peripheral carbazole donor dendron (1.19 V), respectively. The Eox values for tBuCzCO2HDCzB are similar at 1.01 and 1.17 of DtBuCzB (labs = 467 nm, Figure ), meaning that FRET is expected to be efficiency between each of these two pairs of molecules.