Description: The effects of electron attaching additives on the photoionization threshold of pyrene in seven liquid media comprising a dielectric hydrocarbon liquid and an electron attaching additive, A, were studied. The photoionization threshold, I/sub L/, was found to be independent of the dielectric hydrocarbon liquid and the concentration of each A used. On the basis of these data it was concluded that in the presence of an efficient A at high concentrations, the photoejected electron is captured by A at times shorter than those required for electron solvation (or any possible trapping by the solvent) and that the photoionization process for a solute molecule in these dielectric liquids is probably completed at times less than or equal to 10/sup -14/ and greater than or equal to 10/sup -16/ s and its energetics are rather independent of the bulk properties of these liquids.
Date: January 1, 1981
Creator: Siomos, K.; Kourouklis, G.A. & Christophorou, L.G.
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