Fig. 2.

Annihilation dynamics constrain energy transfer times between isoenergetic antenna. a Absorptive 2DES spectrum of LH2-only cells at T = 1 ps collected at 5.6 μJ cm⁻². The dashed box is analyzed further for the lifetime of energy transfer between LH2 complexes. b Waiting time dynamics from the maximum GSB/SE feature presented following equation 2, where the 2DES intensity is n(T). The intercept of the linear relationship is used to retrieve the annihilation rate, γ₀, which is used to recover the hopping time, τ_hop, given in equation 1. c Color map of the recovered τ_hop. The contours and saturation of the color are given by the intensity of the 2DES signal at 1 ps. d Histogram of the recovered lifetimes giving a mean of 2.7 ps for the lifetime of energy transfer between LH2s