Table 2.
Electrochemical properties of compound 3–6.
| Compound | Eoxa, V | IPCVb, eV | Egopt c, eV | EACVd, eV | IPPESe, eV | Egopt f, eV | EAPESg, eV |
| 3 | 0.35 | 5.15 | 3.29 | 1.86 | 5.4 | 3.19 | 2.21 |
| 4 | 0.36 | 5.16 | 3.25 | 1.91 | 5.46 | 3.1 | 2.36 |
| 5 | 0.31 | 5.11 | 3.25 | 1.86 | 5.39 | 2.8 | 2.59 |
| 6 | 0.38 | 5.18 | 3.41 | 1.77 | 5.62 | 3.25 | 2.37 |
aOnset oxidation potential versus Ag/Ag+; bcalculated using formula IPCV = (Eox − EFc/Fc+) + 4.8 (eV); cestimated from an onset wavelength (λedge) of absorption spectra for toluene solutions using an empirical formula Egopt = 1240/λedge; dcalculated using the formula EACV = IPCV − Egopt; eobtained from PES spectra; festimated for solid films (Figure 3a); gcalculated using the formula EAPES = IPPES − Egopt.