Distribution of nanoparticles in lamellar domains of block copolymers

Julia J. Chiu, Bumjoon J. Kim, Gi Ra Yi, Joona Bang, Edward J. Kramer, David J. Pine

Research output: Contribution to journalArticlepeer-review


Polystyrene-coated gold nanoparticles (molecular weight (Mn) of PS ∼ 1300 g/mol, average particle diameter d (core + shell) ∼ 9.2 ± 2.2 nm, corresponding to a high areal chain density of PS) are incorporated into symmetric poly(styrene-b-2 vinylpyridine) diblock copolymers with total Mn ∼ 60 000-380 000 g/mol at volume fractions of 0.07-0.32. For all Mn of diblock copolymers and particle filling fractions examined, particles are centralized in the PS domains with Gaussian distribution profiles. The distribution width generally decreases as the PS domain size decreases or as the particle weight fraction increases. These observations are discussed in terms of the relative entropic contributions of the polymer chains and particles.

Original languageEnglish (US)
Pages (from-to)3361-3365
Number of pages5
Issue number9
StatePublished - May 1 2007

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry


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