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Issue 4, 2013
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Biaxial alignment of block copolymer-complex lamellae

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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.

Graphical abstract: Biaxial alignment of block copolymer-complex lamellae

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Article information

25 Sep 2012
15 Nov 2012
First published
03 Dec 2012

Soft Matter, 2013,9, 1337-1343
Article type

Biaxial alignment of block copolymer-complex lamellae

J. Wang, W. H. de Jeu, M. Speiser, A. Kreyes, U. Ziener, D. Magerl, M. Philipp, P. Müller-Buschbaum, M. Möller and A. Mourran, Soft Matter, 2013, 9, 1337
DOI: 10.1039/C2SM27209A

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