Neutral peptide biradicals formed by dissociative electron transfer.
[reaction: see text] A new method for the generation of transient neutral biradicals in liquid solution is reported. Photoinduced electron transfer in aqueous solution of the structures shown above leads to neutral biradicals with peptide spacers. Exchange interactions were measured using time-resolved electron paramagnetic resonance (TREPR) and found to be large for the biradicals possessing two and three glycine residue spacers. These findings are compared to previous results from alkyl-spaced biradicals of similar chain length.
Burns
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Venable and Kenan Laboratories, Department of Chemistry, CB #3290, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
Rochelle
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Forbes
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D001555:Benzene Derivatives / Q000138:chemical synthesis / Q000737:chemistry*; D002384:Catalysis; D004578:Electron Spin Resonance Spectroscopy; D006842:Hydrocarbons, Brominated / Q000138:chemical synthesis / Q000737:chemistry; D015394:Molecular Structure; D010455:Peptides / Q000138:chemical synthesis / Q000737:chemistry*; D013329:Structure-Activity Relationship
D001555:Benzene Derivatives; D006842:Hydrocarbons, Brominated; D010455:Peptides