FIGURE 7.

The BBY kinetics (dots) is fitted with reversible CS into a primary charge separated state and subsequent irreversible CS into a secondary charge separated state. The solid line is a fit with a slow hopping time (17 ps). In this case the times for primary and secondary CS are 1.24 and 13.3 ps, respectively, and ΔG = 2380 cm⁻¹. The dashed line is a fit with an extremely fast hopping time (1.3 ps). The times for primary and secondary CS are now 6.6 and 168 ps, respectively, and ΔG = 890 cm⁻¹.