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Using Polystyrene-block-polyacrylic acid-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization
Published on: July 9, 2015
Janus gold nanoparticles obtained via spontaneous binary polymer shell segregation
Ana M Percebom1, Juan J Giner-Casares2, Nathalie Claes3
1CIC BiomaGUNE, Paseo de Miramón 182, 20009 Donostia-San Sebastián, Spain. llizmarzan@cicbiomagune.es and Institute of Chemistry, University of Campinas (UNICAMP), CP 6154 Campinas, SP, Brazil and Department of Chemistry, Pontifícal Catholic University of Rio de Janeiro, 22451-900, Rio de Janeiro, RJ, Brazil. apercebom@puc-rio.br.
Abstract:
Janus gold nanoparticles are of high interest because they allow directed self-assembly and display plasmonic properties. We succeeded in coating gold nanoparticles with two different polymers that form a Janus shell. The spontaneous segregation of two immiscible polymers at the surface of the nanoparticles was verified by NOESY NMR and most importantly by electron microscopy analysis in two and three dimensions. The Janus structure is additionally shown to affect the aggregation behavior of the nanoparticles.
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