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. 1996 Aug 6;93(16):8200–8204. doi: 10.1073/pnas.93.16.8200

Photochemical energy conversion in a helical oligoproline assembly.

D G McCafferty 1, D A Friesen 1, E Danielson 1, C G Wall 1, M J Saderholm 1, B W Erickson 1, T J Meyer 1
PMCID: PMC38646  PMID: 8710847

Abstract

A general method is described for constructing a helical oligoproline assembly having a spatially ordered array of functional sites protruding from a proline-II helix. Three different redox-active carboxylic acids were coupled to the side chain of cis-4-amino-L-proline. These redox modules were incorporated through solid-phase peptide synthesis into a 13-residue helical oligoproline assembly bearing in linear array a phenothiazine electron donor, a tris(bipyridine)ruthenium(II) chromophore, and an anthraquinone electron acceptor. Upon transient 460-nm irradiation in acetonitrile, this peptide triad formed with 53% efficiency an excited state containing a phenothiazine radical cation and an anthraquinone radical anion. This light-induced redox-separated state had a lifetime of 175 ns and stored 1.65 eV of energy.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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