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Photochemical energy conversion in a helical oligoproline assembly.

Publication ,  Journal Article
McCafferty, DG; Friesen, DA; Danielson, E; Wall, CG; Saderholm, MJ; Erickson, BW; Meyer, TJ
Published in: Proceedings of the National Academy of Sciences of the United States of America
August 1996

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.

Duke Scholars

Published In

Proceedings of the National Academy of Sciences of the United States of America

DOI

EISSN

1091-6490

ISSN

0027-8424

Publication Date

August 1996

Volume

93

Issue

16

Start / End Page

8200 / 8204

Related Subject Headings

  • Time Factors
  • Spectrum Analysis
  • Protein Structure, Secondary
  • Photochemistry
  • Peptides
  • Oxidation-Reduction
  • Models, Molecular
 

Citation

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McCafferty, D. G., Friesen, D. A., Danielson, E., Wall, C. G., Saderholm, M. J., Erickson, B. W., & Meyer, T. J. (1996). Photochemical energy conversion in a helical oligoproline assembly. Proceedings of the National Academy of Sciences of the United States of America, 93(16), 8200–8204. https://doi.org/10.1073/pnas.93.16.8200
McCafferty, D. G., D. A. Friesen, E. Danielson, C. G. Wall, M. J. Saderholm, B. W. Erickson, and T. J. Meyer. “Photochemical energy conversion in a helical oligoproline assembly.Proceedings of the National Academy of Sciences of the United States of America 93, no. 16 (August 1996): 8200–8204. https://doi.org/10.1073/pnas.93.16.8200.
McCafferty DG, Friesen DA, Danielson E, Wall CG, Saderholm MJ, Erickson BW, et al. Photochemical energy conversion in a helical oligoproline assembly. Proceedings of the National Academy of Sciences of the United States of America. 1996 Aug;93(16):8200–4.
McCafferty, D. G., et al. “Photochemical energy conversion in a helical oligoproline assembly.Proceedings of the National Academy of Sciences of the United States of America, vol. 93, no. 16, Aug. 1996, pp. 8200–04. Epmc, doi:10.1073/pnas.93.16.8200.
McCafferty DG, Friesen DA, Danielson E, Wall CG, Saderholm MJ, Erickson BW, Meyer TJ. Photochemical energy conversion in a helical oligoproline assembly. Proceedings of the National Academy of Sciences of the United States of America. 1996 Aug;93(16):8200–8204.
Journal cover image

Published In

Proceedings of the National Academy of Sciences of the United States of America

DOI

EISSN

1091-6490

ISSN

0027-8424

Publication Date

August 1996

Volume

93

Issue

16

Start / End Page

8200 / 8204

Related Subject Headings

  • Time Factors
  • Spectrum Analysis
  • Protein Structure, Secondary
  • Photochemistry
  • Peptides
  • Oxidation-Reduction
  • Models, Molecular