title: Janus gold nanoparticles obtained via spontaneous binary polymer shell segregation.
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.
authors.affiliation: CIC 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.
authors.forename: Ana M
authors.initials: AM
authors.lastname: Percebom
authors.affiliation: CIC BiomaGUNE, Paseo de Miramón 182, 20009 Donostia-San Sebastián, Spain. llizmarzan@cicbiomagune.es and Biomedical Research Networking Center in Bioengineering, Biomaterials, and Nanomedicine, CIBER-BBN, Spain.
authors.forename: Juan J
authors.initials: JJ
authors.lastname: Giner-Casares
authors.affiliation: EMAT-University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
authors.forename: Nathalie
authors.initials: N
authors.lastname: Claes
authors.affiliation: EMAT-University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
authors.forename: Sara
authors.initials: S
authors.lastname: Bals
authors.affiliation: Institute of Chemistry, University of Campinas (UNICAMP), CP 6154 Campinas, SP, Brazil.
authors.forename: Watson
authors.initials: W
authors.lastname: Loh
authors.affiliation: CIC BiomaGUNE, Paseo de Miramón 182, 20009 Donostia-San Sebastián, Spain. llizmarzan@cicbiomagune.es and Biomedical Research Networking Center in Bioengineering, Biomaterials, and Nanomedicine, CIBER-BBN, Spain and Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain.
authors.forename: Luis M
authors.initials: LM
authors.lastname: Liz-Marzán