N-Aryl Arenedicarboximides as Tunable Panchromatic Dyes for Molecular Solar Cells

Table 1

UV-Vis absorption data (in ethanol) and cyclic voltammetry data (in 0.1 M Bu₄NPF₆/DMF, scan rate 100 mVs⁻¹, reference electrode Ag/AgCl) from compounds 1–3.

Dye	λ π-𝜋^∗ (nm)	λ ICT (nm)	ε M^−1cm^−1	𝐸max𝜆max(V)	𝐸red(V)	𝐸HOMO(V)	𝐸LUMO (V)
1	350/450	—	28,500/10,600	2.76	−0.83	−6.35	−3.59^a
2	350/450	—	42,700/21,250	2.76	−0.75	−6.43	−3.67^a
3	450	672	22,350/18,750	2.82	−1.23	−6.01	−3.19^a

aaccording to Gillman’s method [41]: −𝐸_LUMO = −4.42 – 𝐸_Red (V, versus Ag/AgCl), 𝐸_max = 1240/𝜆_max(nm) 𝐸_HOMO = 𝐸_LUMO – 𝐸_max.