New epitaxial phase transition between DG and HEX in PS-b-Pl

Hae Woong Park, Jueun Jung, Taihyun Chang, Kazuyuki Matsunaga, Hiroshi Jinnai

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

We investigated the epitaxial phase transition from double gyroid (DG) to hexagonally packed cylinder (HEX) phases of a polystyrene-b-polyisoprene diblock copolymer in a thin film on a Si wafer substrate. The internal structure of the thin film was investigated by grazing incidence small-angle X-ray scattering, transmission electron microscopy, and transmission electron microtomography (TEMT). TEMT allows observation of the 3D-image of coexisting DG and HEX directly. Good domain orientation in the thin film and direct 3D-imaging of TEMT made it possible to observe the coexisting phase of DG and HEX, and a new epitaxial transition path from DG to HEX was found.

Original languageEnglish
Pages (from-to)46-47
Number of pages2
JournalJournal of the American Chemical Society
Volume131
Issue number1
DOIs
Publication statusPublished - 2009 Jan 14
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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