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Keywords:

  • Block copolymers;
  • Nanoparticles, gold;
  • Polymer composites;
  • Polystyrene;
  • Surface modification
Thumbnail image of graphical abstract

Films of a symmetric A–B diblock copolymer and A-coated Au nanoparticles cast from a selective solvent for A develop a lamellar surface layer. The surface layers have a low volume fraction of nanoparticles in the A lamellae atop a substrate layer of B cylinders/spheres in an A matrix containing a larger volume fraction of nanoparticles (see Figure). This arrangement thus induces an order–order transition between block-copolymer phases as their concentration is increased.