Electron Transfer and Absorption Spectra of Complexes

Science  29 Jan 1960:
Vol. 131, Issue 3396, pp. 303
DOI: 10.1126/science.131.3396.303


Occurrence of light saturation in the reaction of thionine (T) with Fe2+ suggests the existence of T. Fe2+ complexes practically indistinguishable by their absorption spectra from free thionine; photoreduction seems to occur by electron transfer in such complexes, delayed by more than 10-5 second after light absorption. Both phenomena must be of general significance.