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Issue 12, 2015
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Chemically directed self-assembly of perpendicularly aligned cylinders by a liquid crystalline block copolymer

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Abstract

Chemical epitaxy with a density multiplication process was applied to the perpendicularly oriented hexagonal cylinder nanostructure of liquid crystalline block copolymer (PEO-b-PMA(Az)) thin film through thermally induced microphase separation by using a newly designed PMA(Az)24 brush. The hexagonal lattice orientation with 1.9 tera-cylinders per inch2 was laterally controlled for long-range-ordered direct self-assembly. Furthermore, the direct pattern-transfer of the assembled structure to an Au nanodot array was demonstrated by doping of HAuCl4 selectively into the PEO cylindrical microdomains and then vacuum ultraviolet light irradiation to cause polymer etching and reduction of the Au ions.

Graphical abstract: Chemically directed self-assembly of perpendicularly aligned cylinders by a liquid crystalline block copolymer

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Publication details

The article was received on 11 Dec 2014, accepted on 29 Jan 2015 and first published on 02 Feb 2015


Article type: Paper
DOI: 10.1039/C4TC02851A
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. C, 2015,3, 2837-2847
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    Chemically directed self-assembly of perpendicularly aligned cylinders by a liquid crystalline block copolymer

    N. Yamashita, S. Watanabe, K. Nagai, M. Komura, T. Iyoda, K. Aida, Y. Tada and H. Yoshida, J. Mater. Chem. C, 2015, 3, 2837
    DOI: 10.1039/C4TC02851A

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