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首页> 外文期刊>Advanced Functional Materials >Polymer-Modified Mesoporous Silica Thin Films for Redox-Mediated Selective Membrane Gating
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Polymer-Modified Mesoporous Silica Thin Films for Redox-Mediated Selective Membrane Gating

机译：用于氧化还原介导的选择性膜浇铸的聚合物改性介孔二氧化硅薄膜

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摘要

Controlling structure and function to switch ionic transport through synthetic membranes is a major challenge in the fabrication of functional nanodevices. Here we describe the combination of mesoporous silica thin films as structural unit, functionalized with two different redox-responsive ferrocene-containing polymers, polyvinylferrocene (PVFc) and poly(2-(methacryloyloxy)ethyl ferrocenecarboxylate) (PFcMA), by using either a grafting to, or a grafting from approach. Both mesoporous film functionalization strategies are investigated in terms of polymer effect on ionic permselectivity. A significantly different ionic permselective behavior can be observed. This is attributed to different polymer location within the mesoporous film, depending on the functionalization strategies used. Additionally, the influence of chemical oxidation on the ionic permselective behavior is studied by cyclic voltammetry showing a redox-controlled membrane gating as function of polymer location and the phi value. This study is a first step of combining redox-responsive ferrocene-containing polymers and mesoporous membranes, and thus towards redox-controlled ionic transport through nanopores.
机译：控制功能和结构以切换离子通过合成膜的传输是功能纳米器件制造中的主要挑战。在这里，我们描述了介孔二氧化硅薄膜作为结构单元的组合，通过使用两种接枝方法，通过两种不同的含氧化还原反应性二茂铁的聚合物，聚乙烯基二茂铁（PVFc）和聚（2-（甲基丙烯酰氧基）乙基二茂铁羧酸酯）（PFcMA）进行了功能化或从方法移植。根据聚合物对离子渗透选择性的影响，研究了两种介孔膜功能化策略。可以观察到明显不同的离子选择性渗透行为。这归因于中孔膜内聚合物的不同位置，这取决于所使用的官能化策略。此外，通过循环伏安法研究了化学氧化对离子渗透选择性行为的影响，循环伏安法显示氧化还原控制的膜门控是聚合物位置和phi值的函数。这项研究是结合含氧化还原反应的二茂铁聚合物和中孔膜的第一步，从而实现了通过纳米孔进行氧化还原控制的离子迁移。

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  • 来源
    《Advanced Functional Materials》 |2014年第11期|1591-1601|共11页
  • 作者

    Johannes Elbert; Fabio Krohm; Christian Ruettiger; Sandra Kienle; Haiko Didzoleit; Bizan N. Balzer; Thorsten Hugel; Bernd Stuehn; Markus Galle; Annette Brunsen;

  • 作者单位

    Emst-Berl Institut fuer Technische und Makromolekulare Chemie Technische Universitaet Darmstadt Petersenstrasse 22, D-64287, Darmstadt, Germany;

    Emst-Berl Institut fuer Technische und Makromolekulare Chemie Technische Universitaet Darmstadt Petersenstrasse 22, D-64287, Darmstadt, Germany;

    Emst-Berl Institut fuer Technische und Makromolekulare Chemie Technische Universitaet Darmstadt Petersenstrasse 22, D-64287, Darmstadt, Germany;

    IMETUM and Physik-Department Technische Universitaet Muenchen Boltzmannstr.11, D-85748, Garching, Germany;

    Institute of Condensed Matter Physics Technische Universitaet Darmstadt Hochschulstrasse 8, D-64289, Darmstadt, Germany;

    IMETUM and Physik-Department Technische Universitaet Muenchen Boltzmannstr.11, D-85748, Garching, Germany;

    IMETUM and Physik-Department Technische Universitaet Muenchen Boltzmannstr.11, D-85748, Garching, Germany;

    Institute of Condensed Matter Physics Technische Universitaet Darmstadt Hochschulstrasse 8, D-64289, Darmstadt, Germany;

    Emst-Berl Institut fuer Technische und Makromolekulare Chemie Technische Universitaet Darmstadt Petersenstrasse 22, D-64287, Darmstadt, Germany;

    Emst-Berl Institut fuer Technische und Makromolekulare Chemie Technische Universitaet Darmstadt Petersenstrasse 22, D-64287, Darmstadt, Germany;

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