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Issue 20, 2016
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Periodic nanoscale patterning of polyelectrolytes over square centimeter areas using block copolymer templates

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Abstract

Nano-patterned materials are beneficial for applications such as solar cells, opto-electronics, and sensing owing to their periodic structure and high interfacial area. Here, we present a non-lithographic approach for assembling polyelectrolytes into periodic nanoscale patterns over cm2-scale areas. Chemically modified block copolymer thin films featuring alternating charged and neutral domains are used as patterned substrates for electrostatic self-assembly. In-depth characterization of the deposition process using spectroscopy and microscopy techniques, including the state-of-the-art scanning transmission X-ray microscopy (STXM), reveals both the selective deposition of the polyelectrolyte on the charged copolymer domains as well as gradual changes in the film topography that arise from further penetration of the solvent molecules and possibly also the polyelectrolyte into these domains. Our results demonstrate the feasibility of creating nano-patterned polyelectrolyte layers, which opens up new opportunities for structured functional coating fabrication.

Graphical abstract: Periodic nanoscale patterning of polyelectrolytes over square centimeter areas using block copolymer templates

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Publication details

The article was received on 14 Feb 2016, accepted on 06 Apr 2016 and first published on 07 Apr 2016


Article type: Paper
DOI: 10.1039/C6SM00381H
Citation: Soft Matter, 2016,12, 4595-4602
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    Periodic nanoscale patterning of polyelectrolytes over square centimeter areas using block copolymer templates

    M. Oded, S. T. Kelly, M. K. Gilles, A. H. E. Müller and R. Shenhar, Soft Matter, 2016, 12, 4595
    DOI: 10.1039/C6SM00381H

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