Figure 3.

Selected 2D absorptive spectra for Ph₂TDPP and c-EXG–TDPP. (a–f) 2D absorptive maps at 30 (a, d), 100 (b, e), 2000 (c, f) fs for Ph₂TDPP (a–c) and c-EXG–TDPP (d–f), with color bar shown in top right (blue for negative, zero is set to white, red for positive ΔT/T). Points of interest are indicated by yellow dots in all maps, which coincide with pumping the linear absorption of Ph₂TDPP (PhA₁, PhA₂), probing the PL of Ph₂TDPP (PhE₁, PhE₂), or pumping/probing the c-EXG–TDPP linear absorption (BG1, BG2) and also probing the c-EXG–TDPP ESA. The corresponding dynamics at those points are shown in panels g–j (g, h for Ph₂TDPP, i, j for c-EXG–TDPP). Solid (dashed) contour lines correspond to positive (negative) 2D signals.