Dresden 2006 – scientific programme

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CPP: Chemische Physik und Polymerphysik

CPP 12: POSTER Colloids, Nanoparticles and Self-Organizing Systems

CPP 12.7: Poster

Tuesday, March 28, 2006, 17:00–19:00, P3

Novel Metal Cages from Bionanoparticle Templates — •Günther Jutz, Anne Horn, Nathalie Mougin, and Alexander Böker — Lehrstuhl für Physikalische Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany

In the presented project we make use of the well-defined composition and structure of the cowpea mosaic virus (CPMV). We use this plant virus as a template for the production of monodisperse, well defined nanoparticles and nanocapsules. We followed this aim with different approaches. After the incubation of the aqueous virus solution with a metal salt under reductive conditions either a homogenous coating or the deposition of distinct nanoparticles onto the capsid has been observed by TEM, SEM and AFM. Another approach uses the well defined surface chemistry of the virus for the site specific decoration of the capsid with nanoparticles. To achieve this, preformed, monofunctionalized nanoparticles can be covalently bound to the capsid. To broaden the range of nanoparticles that can be attached to the virus, it was modified with different chelating ligands that promote binding of metal cations and serve as heterogeneous nucleation sites for the site specific in-situ growth of nanoparticles. Characterization of the ligand modified virus and the composite particles has been performed using FPLC, SPR, TEM, SEM and AFM.