Figure 14: Common dependence of l o g 𝑘 Q (top) and log ( 1 / 𝑘 Q 1 / 𝑘 D i ) (bottom) on Δ 𝐺 E x (obtained according to (16)) of exciplexes of thioxantone with methylbenzenes (circles) and methoxybenzenes (squares) in MeCN (according to the experimental data of Jacques et al. [39]). Lifetimes of transient exciplexes were supposed to be 10 ps for methylbenzenes and 300 ps for methoxybenzenes.