Hierarchically structured colloids of diblock copolymers and Au nanoparticles

Seog Jin Jeon, Seung Man Yang, Bumjoon J. Kim, Joshua D. Petrie, Se Gyu Jang, Edward J. Kramer, David J. Pine, Gi Ra Yi

Research output: Contribution to journalArticlepeer-review


A simple route for fabrication of hierarchically structured multi-layer composite spheres, which were produced by introducing polymer-coated gold nanoparticles into spherically confined phases of block copolymers, was demonstrated. The block copolymer and nanoparticles were dissolved in toluene, which was then emulsified in water using a high-speed mechanical homogenizer. Particles were formed by slow evaporation of the toluene by heating. Spherically confined layered onionlike structures were produced, with the gold nanoparticles encapsulated inside, because a symmetric poly(styrene-b-butadiene) (PS-b- PB) diblock copolymer was used as the matrix for the composite particles. The cross-sectional TEM images show that PS-Au nanoparticles were confined within the polystyrene layers. It was observed that as the areal chain density increased, the location of PS-Au nanoparticle in PS domain with the same degree of polymerization was shifted from the interface to the center.

Original languageEnglish (US)
Pages (from-to)3739-3741
Number of pages3
JournalChemistry of Materials
Issue number16
StatePublished - Aug 25 2009

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Materials Chemistry


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