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Arrays of Inorganic Nanodots and Nanowires Using Nanotemplates Based on Switchable Block Copolymer Supramolecular Assemblies

机译:使用基于可切换嵌段共聚物超分子组装的纳米模板的无机纳米点和纳米线的阵列。

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摘要

Here, a novel and simple route to fabricate highly dense arrays of palladium nanodots and nanowires with sub-30 nm periodicity using nanoporous templates fabricated from supramolecular assemblies of a block copolymer, polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) and a low molecular weight additive, 2-(4'-hydroxybenzeneazo) benzoic acid (HABA) is demonstrated. The palladium nanoparticles, which are directly deposited in the nanoporous templates from an aqueous solution, selectively migrate in the pores mainly due to their preferential attraction to the P4VP block covering the pore wall. The polymer template is then removed by oxygen plasma etching or pyrolysis in air resulting in palladium nanostructures whose large scale morphology mirrors that of the original template. The method adopted in this work is general and versatile so that it could easily be extended for patterning a variety of metallic materials into dot and wire arrays.
机译:在这里,这是一种新颖而简单的方法,可使用由嵌段共聚物,聚苯乙烯-嵌段-聚(4-乙烯基吡啶)(PS-b-)的超分子组装体制成的纳米孔模板,以低于30 nm的周期性制备高密度的钯纳米点和纳米线阵列。 P4VP)和低分子量添加剂2-(4'-羟基苯偶氮)苯甲酸(HABA)被证明。直接从水溶液中沉积在纳米多孔模板中的钯纳米颗粒主要由于其对覆盖孔壁的P4VP嵌段的优先吸引而选择性地在孔中迁移。然后通过氧等离子体蚀刻或在空气中热解去除聚合物模板,从而产生钯纳米结构,其大型形态与原始模板的形态相似。这项工作中采用的方法是通用且通用的,因此可以轻松扩展以将各种金属材料图案化为点和线阵列。

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  • 来源
    《Advanced Functional Materials》 |2009年第17期|2805-2811|共7页
  • 作者单位

    Leibniz Institute of Polymer Research Dresden Hohe Strasse 6, 01069 Dresden (Germany);

    Leibniz Institute of Polymer Research Dresden Hohe Strasse 6, 01069 Dresden (Germany);

    Physical Chemistry, Technische Universitat Dresden Bergstrasse 66b, 01062 Dresden (Germany);

    Physical Chemistry, Technische Universitat Dresden Bergstrasse 66b, 01062 Dresden (Germany);

    Leibniz Institute of Polymer Research Dresden Hohe Strasse 6, 01069 Dresden (Germany);

    Max Planck Institute for Chemical Physics of Solids Nothnitzer Strasse 40, 01187 Dresden (Germany);

    Leibniz Institute of Polymer Research Dresden Hohe Strasse 6, 01069 Dresden (Germany);

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