Fig. 3. Optical spectra recorded for a solution (0.082 mM) of K[DIDTC] (one scan every 45 s) in pH 7.4 aq. phosphate buffer (100 mM, μ tot = 261 mM) at 37 °C. Inset is the temporal plot of the absorbance at 286 nm. The data fit (red) conforms to the first order rate equation [A] = [A]0e–kt, where [A] is the absorbance of the DTC at time t, [A]0 is the initial absorbance, and k is the k obs for this pseudo-first order reaction.
