Premium
PAIRWISE RECOMBINATION IN THE DECAY OF PHOTOCHEMICAL HYDRATED ELECTRONS*
Author(s) -
Lee Joon Y.,
Baugher J. F.,
Grossweiner L. I.
Publication year - 1979
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1979.tb07784.x
Subject(s) - recombination , solvated electron , flash photolysis , electron , chemistry , homogeneous , diffusion , photochemistry , aqueous solution , tryptophan , chemical physics , photodissociation , radiolysis , atomic physics , physics , kinetics , thermodynamics , reaction rate constant , quantum mechanics , biochemistry , gene , amino acid
— The decays of hydrated electrons generated by 265 nm laser flash photolysis of aqueous I ‐ , tyrosine, tryptophan, lysozyrne. and ribonuclease have been analyzed by numerical computing. Homogeneous reactions do not explain the data without e ‐ aq —radical back reactions significantly faster than diffusion limited. The results are explained by postulating pairwise recombination persists at times where conventional diffusion theory predicts randomization, particularly at low intensities and in the absence of effective e ‐ aq scavengers. The physical mechanisms responsible for these effects are considered.