Controlled ordering of block copolymer thin films by the addition of hydrophilic nanoparticles

Sung Chan Park, Bumjoon J. Kim, Craig J. Hawker, Edward J. Kramer, Joona Bang, Jeong Sook Ha

Research output: Contribution to journalArticlepeer-review

72 Citations (Scopus)


A novel method for controlling the orientation of PSt-b-PMMA block copolymer thin films by using hydrophilic nanoparticles without the need for a neutralization layer that greatly improves the processability of PSt-b-PMMA systems has been demonstrated. It has been shown that the incorporation of hydrophilic PEO-coated nanoparticles into poly(styrene-b-methyl methacrylate) (PSt-b-PMMA) diblock copolymers, the ordering of PSt-b-PMMA thin films can be effectively controlled in a manner that is similar to the PEO-based block copolymer, while retaining the degradability of the PMMA domains. The effect of hydrophilic PEO-coated Au particles on the domain size and its homogeneity of PMMA cylinders within a PS domain is demonstrated, although the nanoparticle itself introduce a secondary functionality such as etch resistance into the films.

Original languageEnglish
Pages (from-to)8119-8124
Number of pages6
Issue number22
Publication statusPublished - 2007 Oct 30

ASJC Scopus subject areas

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


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