https://doi.org/10.1140/epjd/e2009-00056-2
Silver cluster induced absorption enhancement and conformation control of peptides
Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Straße 2, 12489 Berlin, Germany
Corresponding author: a vbk@chemie.hu-berlin.de
Received:
19
September
2008
Published online:
18
February
2009
We present a theoretical study of the structural and optical properties of isolated silver cluster-tripeptide hybrid systems. We show that small silver clusters induce enhancement of the optical absorption of peptides. Moreover, silver clusters bound to peptides can reduce the conformational flexibility and invoke changes of the secondary structure. Thus, they might serve as local optical probes in biolabelling applications.
PACS: 31.10.+z – Theory of electronic structure, electronic transitions, and chemical binding / 36.40.Vz – Optical properties of clusters / 81.07.Pr – Organic-inorganic hybrid nanostructures / 87.15.M- – Spectra of biomolecules
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009
