FIGURE 5.

(A) 5-K absorption difference spectrum with modified Pheo_D2. Solid line is calculation; circles are experimental values (Germano et al., 2001). (B) 5-K absorption difference spectrum with modified Pheo_D1 and Pheo_D2. Solid line is calculation; circles are experimental values (Germano et al., 2001). (C) 77-K absorption difference spectrum with reduced Pheo_D1. Solid line is calculation, circles are experimental values (Vacha et al., 2002), and dashed line shows calculation without electrochromic shifts. (D) Calculation (solid line) of 10-K absorption difference spectrum with reduced Pheo_D1 and oxidized P_D1, comparison with experimental data (van Kan et al., 1990). (E) 277-K T-S spectrum, circles are experimental values (Durrant et al., 1990), dotted line shows calculation for triplet localized at Acc_D1, dashed line for triplet localized at P_D1, and solid line for a mixture of both according to a thermal population of triplet states (for details, see text). (F) 77-K absorption and difference spectra of RC-6 and RC-5 preparations (for explanation, see text). Solid (RC-6) and dotted (RC-5) lines are calculations, triangles, and circles are experimental values (Vacha et al., 1995); dashed line and squares are theoretical and experimental difference spectra, RC-5−RC-6.