PHOTOCHEMISTRY OF BIOLOGICAL MOLECULES – II. PHOTOLYSIS OF DIPEPTIDES IN THE SOLID STATE |
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| Authors: | R. B. Johns F. D. Looney D. J. Whelan |
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| Affiliation: | Department of Organic Chemistry, University of Melbourne, Australia, and the Division of Applied Chemistry, C.S.I.R.O., Melbourne, Australia |
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| Abstract: | Abstract— Photolysis with light of 2537 Å of a series of aliphatic dipeptides in the solid state has been shown to lead to bond rupture and free radical formation. The structures of the radicals have been determined by ESR techniques and in general, the free electron has been shown to reside on the carbon atom attached to the nitrogen atom of the peptide bond. Dipeptides containing phenylalanine residues show ESR spectra typical of the free amino-acid in the terminal position. |
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