Table 5. Driving Forces (ΔG°)^a, Reorganization Energies (λ), and Electronic Coupling Values (V) for Charge Recombination in P_n–C₆₀ Obtained from Individual Fits Assuming Recombination to the First Excited Triplet State or Directly to the Ground State.

	P1–C60	P2–C60	P2–C60	P3–C60	P4–C60	P6–C60
parameter		180–240 K	240–300 K
Assuming Recombination to the First Triplet Excited State
ΔG°/eV	+0.12	–0.13	–0.13	–0.24	–0.30	–0.33
λ/eV	–	0.33	0.49	0.47	0.53	0.57
V/cm–1	–	4.5	11.5	4.2	3.8	3.52
Assuming Recombination to the Ground State
ΔG°/eV	–1.29	–1.30	–1.30	–1.31	–1.31	–1.31
λ/eV	0.95	0.96	0.83	0.98	0.99	0.99
V/cm–1	8.1	5.8	13.1	5.0	4.5	4.0

^aΔG° values for P₁–C₆₀, P₂–C₆₀, and P₄–C₆₀ were taken from refs (44) and (49). The values for P₃–C₆₀ and P₆–C₆₀ were obtained by interpolation and extrapolation of a plot of ΔG° vs 1/n, where n is the number of porphyrin units.