Table 2.

Redox properties of the new Cu^I photosensitizer in ACN (0.1 m TBAPF₆).^[a]

Sample	E ox [V]	E red [V]	E ox* [V][b]	E red* [V][b]
1	0.95; 1.2	−2.09	−1.75	0.61
2 a	0.90; 1.3	−1.8; −2.5	−1.81	0.85
2 b	1.00; 1.7	−1.95	−1.31	0.75
2 c	0.99; 1.9	−2.6	−1.71	0.06

[a] Estimated by cyclic voltammetry, at a scan rate of 100 mV s⁻¹, and reported versus ferrocene/ferrocenium couple. [b] Redox potentials of the excited states, calculated from the formulas E _ox*=E _ox−E ₀₀; E _red*=E _red+E ₀₀, where E ₀₀ (≈2.7 eV) is defined as the energy of the transition from the lowest excited state in thermal equilibrium to the zero vibrational level of the ground state. It was quantitatively estimated, according to equations reported in ref. 26a and 26b.