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Issue 6, 2016
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Micropore extrusion-induced alignment transition from perpendicular to parallel of cylindrical domains in block copolymers

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Abstract

The orientation transition from perpendicular to parallel alignment of PEO cylindrical domains of PEO-b-PMA(Az) films has been demonstrated by extruding the block copolymer (BCP) solutions through a micropore of a plastic gastight syringe. The parallelized orientation of PEO domains induced by this micropore extrusion can be recovered to perpendicular alignment via ultrasonication of the extruded BCP solutions and subsequent annealing. A plausible mechanism is proposed in this study. The BCP films can be used as templates to prepare nanowire arrays with controlled layers, which has enormous potential application in the field of integrated circuits.

Graphical abstract: Micropore extrusion-induced alignment transition from perpendicular to parallel of cylindrical domains in block copolymers

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Publication details

The article was received on 23 Dec 2015, accepted on 11 Jan 2016 and first published on 11 Jan 2016


Article type: Communication
DOI: 10.1039/C5NR09140C
Nanoscale, 2016,8, 3268-3273

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    Micropore extrusion-induced alignment transition from perpendicular to parallel of cylindrical domains in block copolymers

    T. Qu, Y. Zhao, Z. Li, P. Wang, S. Cao, Y. Xu, Y. Li and A. Chen, Nanoscale, 2016, 8, 3268
    DOI: 10.1039/C5NR09140C

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