813987.fig.007
Figure 7: Dependences of l o g 𝑘 Q (top) and l o g ( 1 / 𝑘 Q 1 / 𝑘 D i ) (bottom) on Δ 𝐺 E T for quenching of excited singlet states of various aromatic compounds in MeCN (according to the experimental data of Rehm and Weller [31]). Best plots are shown for simulation of the experimental dependence by (3)—1 and (6)—2, and by concatenated mechanism (16)—3. Dotted line shows thermodynamic limit for ET ( 𝑘 Q = 𝑘 D i / [ 1 + 𝑘 0 e x p ( Δ 𝐺 E T / 2 . 3 𝑅 𝑇 ) ] , where l o g 𝑘 D i = 1 0 . 3 , l o g 𝑘 0 = 1 3 ).