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Effect of morphology of conducting polymer on DNA sensing

机译：导电聚合物的形态对DNA传感的影响

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摘要

Electrochemical DNA sensors can be constructed by understanding basic interfacial electron transfer between solid surface-electrolyte-DNA interfaces. The kinetics of this heterogeneous process can be significantly affected by the microstructure and roughness of the electrode surface. By understanding this concept, in this paper; we compared the performance of micro electrodes containing poly(Py-co-PAA) with macro electrode containing same copolymer, showing that micro electrodes are more sensitive than the macro electrodes for biosensor applications. Sensors based on the copolymer electropolymerised on both micro and macro electrodes were evaluated across a range of oligonucleotide concentrations. The interfacial electron charge transfer resistance between the solution and electrode surface was studied using electrochemical impedance spectroscopy (EIS).
机译：电化学DNA传感器可以通过了解固体表面-电解质-DNA界面之间的基本界面电子转移来构建。电极表面的微观结构和粗糙度会大大影响这种异质过程的动力学。通过理解这个概念，本文我们将包含聚（Py-co-PAA）的微电极与包含相同共聚物的大电极的性能进行了比较，结果表明，在生物传感器应用中，微电极比大电极更敏感。在一系列寡核苷酸浓度范围内评估了基于在微电极和宏观电极上电聚合的共聚物的传感器。使用电化学阻抗谱（EIS）研究了溶液与电极表面之间的界面电子电荷转移电阻。

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  • 来源
  • 会议地点 Wellington(NZ);Wellington(NZ)
  • 作者

    Bhuvaneswari Kannan; David.E.Williams; Jadranka Travas-Sejdic;

  • 作者单位

    Polymer Electronic Research Centre (PERC), Department of Chemistry, University of Auckland, Private bag-92019, Auckland, New Zealand,MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand;

    Polymer Electronic Research Centre (PERC), Department of Chemistry, University of Auckland, Private bag-92019, Auckland, New Zealand,MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand;

    Polymer Electronic Research Centre (PERC), Department of Chemistry, University of Auckland, Private bag-92019, Auckland, New Zealand,MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料一般性问题;
  • 关键词

    DNA sensor; conducting polymer; polypyrrole; impedance spectroscopy;

    机译：DNA传感器导电聚合物聚吡咯阻抗谱;

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