Fig. 5. Determination of the rate constants for the regeneration (k regen) of the Pt(ii) complex catalysts. (a) Decay traces of the 770 nm absorption band of the one-electron oxidized PtOMe (100 μM in deaerated CH3CN, O.D. at 355 nm = 0.52) in the presence (50 μM) or absence of TMEDA after nanosecond pulsed photoexcitation at 355 nm. (b) Plots of the regeneration rate (1/τ(TMEDA) – 1/τ, where τ(TMEDA) and τ are the half-lives of the 770 nm traces in the presence and absence of TMEDA, respectively) vs. the concentration of TMEDA. The k regen values were determined according to the single exponential curve fitting.
