Phys. Rev. Lett. 101, 213001 (2008) [4 pages]Absorption Enhancement and Conformational Control of Peptides by Small Silver ClustersReceived 25 July 2008; revised 30 September 2008; published 18 November 2008 We explored experimentally and theoretically the optical properties of isolated silver trimer-dipeptide bioconjugates. The metallic moiety induces a strong enhancement of the optical absorption of the peptide. We also show that its binding to a peptide can reduce the conformational flexibility and induce transitions between secondary structures. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.213001
DOI:
10.1103/PhysRevLett.101.213001
PACS:
31.10.+z, 36.40.Vz, 81.07.Pr, 87.15.M−
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