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Biomimetic synthesis of chiral erbium-doped silver/peptide/silica core-shell nanoparticles (ESPN)

  • Peptide-modified silver nanoparticles have been coated with an erbium-doped silica layer using a method inspired by silica biomineralization. Electron microscopy and small-angle X-ray scattering confirm the presence of an Ag/peptide core and silica shell. The erbium is present as small Er(2)O(3) particles in and on the silica shell. Raman, IR, UV-Vis, and circular dichroism spectroscopies show that the peptide is still present after shell formation and the nanoparticles conserve a chiral plasmon resonance. Magnetic measurements find a paramagnetic behavior. In vitro tests using a macrophage cell line model show that the resulting multicomponent nanoparticles have a low toxicity for macrophages, even on partial dissolution of the silica shell.

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Author details:Alexandre Mantion, Philipp Graf, Ileana Florea, Andrea Haase, Andreas F. Thuenemann, Admir Masic, Ovidiu Ersen, Pierre Rabu, Wolfgang P. Meier, Andreas Luch, Andreas TaubertORCiDGND
DOI:https://doi.org/10.1039/c1nr10930h
ISSN:2040-3364
Title of parent work (English):Nanoscale
Publisher:Royal Society of Chemistry
Place of publishing:Cambridge
Publication type:Article
Language:English
Year of first publication:2011
Publication year:2011
Release date:2017/03/26
Volume:3
Issue:12
Number of pages:12
First page:5168
Last Page:5179
Funding institution:Adolf-Martens e.V.; Division 1, Bundesanstalt fur Materialforschung und -prufung; Alexander von Humboldt Foundation; Max Planck Society; Swiss National Science Foundation; University of Potsdam; Fonds der Chemischen Industrie; Bundesanstalt fur Materialforschung und -prufung; Bundesinstitut fur Risikobewertung; Universite de Strasbourg; Centre Nationale de la Recherche Scientifique; MPI of Colloids and Interfaces (Colloid Chemistry Department)
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie
Peer review:Referiert
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