RESULTS AND DISCUSSION
Redox Behavior of 1−4 by Cyclic Voltammetry (CV)
and Differential Pulse Voltammetry (DPV). Electronic
interactions would be reflected on their electrochemical properties.
Although triphenylamine (TPA) is oxidized at EDPV =
1.10 V, 4 shows two oxidation waves at 0.76 and 0.96 V,
indicating that 4 has a lower HOMO than TPA (Figure 1).