American Physical Society, Physical Review Letters, 21(101), 2008
DOI: 10.1103/physrevlett.101.213001
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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.