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Photoinduced electron transfer between non-native donor-acceptor moieties incorporated in synthetic polypeptide
Guilford Jones1, Valentine I Vullev
1Department of Chemistry and Photonics Center, Boston University, Boston, MA 02215, USA. jones@chem.bu.edu
Organic Letters
|November 9, 2002
Abstract:
A series of analogous photoactive polypeptides that form helical homo and hetero aggregates in aqueous media were prepared. A pyrenyl ketone (the principal chromophore and an electron acceptor) was attached to the N-termini. An electron donor, amidoethylcarbazole, was introduced as a side chain of a non-native amino acid, NCb, 14 residues away. Photoinduced electron-transfer rate constants of the order of 10(8) s(-1) between remote pyrene and carbazole were measured. [structure: see text]