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

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

doi:10.1021/ja808259m

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 journal › Article › peer-review

43 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 language	English
Pages (from-to)	46-47
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	131
Issue number	1
DOIs	https://doi.org/10.1021/ja808259m
Publication status	Published - 2009 Jan 14
Externally published	Yes

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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10.1021/ja808259m

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AU - Park, Hae Woong

AU - Jung, Jueun

AU - Chang, Taihyun

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AU - Jinnai, Hiroshi

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AB - 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.

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

Abstract

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