Abstract
We studied the low-temperature dynamics of the Stokes shift of instantaneous phosphorescence spectra of eosin and eosin maleimide covalently bound to hemoglobin in a 66% v/v aqueous solution of glycerol under conditions of pulsed excitation. The kinetics of the Stokes shifts are described using the Cole-Davidson distribution function. From the experimental data, we obtain the parameters τ0 and β, which describe the Cole-Davidson distribution. Values of τ0 and β agree well with data obtained by other methods, and these parameters can be used to describe electron transfer reactions in polar solutions and proteins.
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