Transient Exciplex Formation Electron Transfer Mechanism

Figure 15

Dependences of log𝑘_Q (top) and log (1/𝑘_Q−1/𝑘_Diff) (bottom) on Δ𝐺_ET^∗ for quenching of singlet excited states of cyanoaromatic compounds by pyridine (triangles) and lutidine (circles) in MeCN (according to the experimental data of Wang et al. [48]). Best plots are shown for simulation of the experimental dependence by concatenated mechanism (16) (solid lines) and by (3) (lutidine, 𝜆=0.1 eV) (dash line). Dotted line shows thermodynamic limit for ET.