Regensburg 2016 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 4: Nanoparticles, Nanocrystals and Composites I
CPP 4.1: Talk
Monday, March 7, 2016, 09:30–09:45, H41
Protein-Assisted Assembly of Highly Modular Plasmonic Core/Satellite Nanoclusters — •Roland Höller1,2, Martin Dulle3, Sabrina Thomä2, Martin Mayer1,2, Stephan Förster3, Andreas Fery1,2, Christian Kuttner1,2, and Munish Chanana2,4 — 1Nanostructured Materials, Leibniz Institute of Polymer Research, 01069 Dresden, Germany — 2Physical Chemistry II, University of Bayreuth, 95440 Bayreuth, Germany — 3Physical Chemistry I, University of Bayreuth, 95440 Bayreuth, Germany — 4Institute of Building Materials, ETH Zürich, 8093, Zürich, Switzerland
We present a novel protein-assisted self-assembly route of small spherical gold or silver NPs (as satellites) with a hydrophilic protein corona onto larger gold NPs (as cores) into three-dimensional nanoassemblies with core/satellite architecture in dispersion. The highly modular bottom-up fabrication of colloidally stable nanoclusters was shown for homo- and heterometallic core/satellite combinations, with variable sizes of the building blocks, using different proteins. A precise characterization of the morphology of such core/satellite nanoclusters in dispersion was achieved using small-angle X-ray scattering (SAXS). By combining the results from SAXS, UV/Vis spectroscopy, and electromagnetic simulations we were able to correlate the structural parameters with the plasmonic coupling within the core/satellite nanoclusters.
Roland P. M. Höller et al., 2015 (submitted).