Direct three-dimensional observations of order-order transition from gyroid to cylindrical structures in a block copolymer

Hidekazu Sugimori, Ken Ichi Niihara, Takeshi Kaneko, Wakana Miyoshi, Hiroshi Jinnai

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

An order-order transition (OOT) from the bicontinuous double-gyroid (G) structure to the hexagonally-packed cylindrical (C) structure in a poly(styrene-block-isoprene) (SI) block copolymer was investigated by transmission electron microtomography (TEMT). The coexistence of the G and C microdomains during the OOT was observed. The boundary structures between the G and C microdomains were directly three-dimensionally visualized. It was found that the {220} plane of the G structure changed to the {110} plane of the newlygenerated C structure, consistent with Matsen's prediction from his computer simulations based on self-consistent field (SCF) theory.

Original languageEnglish
Pages (from-to)166-173
Number of pages8
JournalProgress of Theoretical Physics
Issue number175 SUPPLEMENT
Publication statusPublished - 2008 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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