title: Separation of nanoparticles by gel electrophoresis according to size and shape.
abstract: We demonstrate the separation of gold and silver nanoparticles according to their size and shape by agarose gel electrophoresis after coating them with a charged polymer layer. The separation is monitored optically using the size- and shape-dependent plasmon resonance of noble metal particles and confirmed by transmission electron microscopy (TEM). Electrophoretic mobilities are quantitatively explained by a model based on the Henry formula, providing a theoretical framework for predicting gel mobilities of polymer coated nanoparticles.
authors: Institute for Physical Chemistry, University of Mainz, Jakob-Welder-Weg 11, 55128 Mainz, Germany.
authors: Matthias
authors: M
authors: Hanauer
authors: Sebastien
authors: S
authors: Pierrat
authors: Inga
authors: I
authors: Zins
authors: Alexander
authors: A
authors: Lotz
authors: Carsten
authors: C
authors: Sönnichsen
mesh_terms: D020552:Comet Assay / Q000379:methods*; D003198:Computer Simulation; D006046:Gold / Q000737:chemistry* / Q000302:isolation & purification*; D008956:Models, Chemical; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods; D010316:Particle Size; D012834:Silver / Q000737:chemistry* / Q000302:isolation & purification*
chemical_list: D012834:Silver; D006046:Gold