Transient Exciplex Formation Electron Transfer Mechanism

Figure 19

Simulated dependences of unimolecular (1, 3) rate constants of excited-state ET and bimolecular (2, 4, 5) quenching rate constants on Δ𝐺_ET^∗: 1, 2 for radiationless transition ((7); 𝑉_AD=0.01 eV, ℎ𝜈_𝑉=0.2 eV, 𝑆=2, 𝜎=0.2 eV); 3, 4 for Marcus ((2), (3); 𝜆=1.8 eV) mechanisms in loose pairs of reactant molecules and 5 for concatenated mechanism in contact pairs ((16); log𝜏^′₀+𝑎/2.3𝑅𝑇=−7.3, 𝑏=0, 𝑐=0.2 eV).