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. Author manuscript; available in PMC: 2010 Sep 24.
Published in final edited form as: J Phys Chem B. 2009 Sep 24;113(38):12773–12781. doi: 10.1021/jp903554n

Figure 2.

Figure 2

(A) Transient absorption profiles of dG(-H)• radical decay at 315 nm in the presence (red traces) and absence (blue traces) of DMSO after a single 308 nm laser pulse excitation of a deoxygenated buffer solution (pH 7.5) containing 0.2 mM dG and 30 mM Na2S2O8. (B) Kinetics of dG(-H)• radical decay (red traces) and •CH3 radicals (black traces) simulated by means of the INTKIN program using the reaction rate constants 3 – 9 shown in Table 1 based on an initial, laser pulse-induced SO4•− concentration of 11 μM. The blue traces show the decay of dG(-H)• radicals with the assumption that the rate constant k7 = 0. The transient absorption profiles of dG(-H)• radicals (green traces) were calculated from the simulated kinetic decay curves shown in Panel A.