Biaxial alignment of block copolymer-complex lamellae

Jingbo Wang; Wim H. De Jeu; Maria Speiser; Andreas Kreyes; Ulrich Ziener; David Magerl; Martine Philipp; Peter Müller-Buschbaum; Martin Möller; Ahmed Mourran

doi:10.1039/c2sm27209a

Biaxial alignment of block copolymer-complex lamellae

Jingbo Wang, Wim H. De Jeu, Maria Speiser, Andreas Kreyes, Ulrich Ziener, David Magerl, Martine Philipp, Peter Müller-Buschbaum, Martin Möller, Ahmed Mourran

Chair of Functional Materials

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Microphase-separated lamellar block copolymers can be oriented perpendicular to a substrate. The application of this attractive configuration as a template for nanostructure fabrication requires additionally long-range in-plane alignment of the lamella, for which no simple procedures are available. Here we present a convenient solution to this problem by exploiting the combination of supramolecular liquid-crystalline ordering of the block copolymer in combination with PTFE rubbing technology. The mesogenic ligands incorporated in one of the blocks interact with the substrate and control the self-assembly, rendering a vertical orientation of the microdomains. In addition the vertical lamellae orient parallel to the friction-deposited PTFE layer leading to long-range lateral ordering, providing unique new possibilities for block copolymer nanotechnology.

Original language	English
Pages (from-to)	1337-1343
Number of pages	7
Journal	Soft Matter
Volume	9
Issue number	4
DOIs	https://doi.org/10.1039/c2sm27209a
State	Published - 28 Jan 2013

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abstract = "Microphase-separated lamellar block copolymers can be oriented perpendicular to a substrate. The application of this attractive configuration as a template for nanostructure fabrication requires additionally long-range in-plane alignment of the lamella, for which no simple procedures are available. Here we present a convenient solution to this problem by exploiting the combination of supramolecular liquid-crystalline ordering of the block copolymer in combination with PTFE rubbing technology. The mesogenic ligands incorporated in one of the blocks interact with the substrate and control the self-assembly, rendering a vertical orientation of the microdomains. In addition the vertical lamellae orient parallel to the friction-deposited PTFE layer leading to long-range lateral ordering, providing unique new possibilities for block copolymer nanotechnology.",

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T1 - Biaxial alignment of block copolymer-complex lamellae

AU - Wang, Jingbo

AU - De Jeu, Wim H.

AU - Speiser, Maria

AU - Kreyes, Andreas

AU - Ziener, Ulrich

AU - Magerl, David

AU - Philipp, Martine

AU - Müller-Buschbaum, Peter

AU - Möller, Martin

AU - Mourran, Ahmed

PY - 2013/1/28

Y1 - 2013/1/28

N2 - Microphase-separated lamellar block copolymers can be oriented perpendicular to a substrate. The application of this attractive configuration as a template for nanostructure fabrication requires additionally long-range in-plane alignment of the lamella, for which no simple procedures are available. Here we present a convenient solution to this problem by exploiting the combination of supramolecular liquid-crystalline ordering of the block copolymer in combination with PTFE rubbing technology. The mesogenic ligands incorporated in one of the blocks interact with the substrate and control the self-assembly, rendering a vertical orientation of the microdomains. In addition the vertical lamellae orient parallel to the friction-deposited PTFE layer leading to long-range lateral ordering, providing unique new possibilities for block copolymer nanotechnology.

AB - Microphase-separated lamellar block copolymers can be oriented perpendicular to a substrate. The application of this attractive configuration as a template for nanostructure fabrication requires additionally long-range in-plane alignment of the lamella, for which no simple procedures are available. Here we present a convenient solution to this problem by exploiting the combination of supramolecular liquid-crystalline ordering of the block copolymer in combination with PTFE rubbing technology. The mesogenic ligands incorporated in one of the blocks interact with the substrate and control the self-assembly, rendering a vertical orientation of the microdomains. In addition the vertical lamellae orient parallel to the friction-deposited PTFE layer leading to long-range lateral ordering, providing unique new possibilities for block copolymer nanotechnology.

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JO - Soft Matter

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Biaxial alignment of block copolymer-complex lamellae

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