Charge transfer to a solvent state. VI. Inter-relation between electrochemical and photoionization data of a solute in condensed phase

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Abstract
The electrochemical data obtained from aqueous solutions of tryptophan, of indole, and from tryptophan in ethanol agree well with those derived from the photoionization mechanism which is based on a charge transfer solute–solvent complex model (Ref. 1), particularly the conduction band depth V0, the effective cavity radius r, hence the solvation energy of the solute cation. A relationship is now established between the electrochemical data and the photoionization data. This relationship permits one to deduce V0 and the oxidation energy eEox1/2 of a solute in a solvent when its photoionization data are known or vice versa.

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