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Analyte discrimination with chemically diverse sensor array based on electrocopolymerized pyrrole and vinyl derivatives

机译：基于电离聚合吡咯和乙烯基衍生物的基于化学多样化传感器阵列分析物辨别

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The development of chemically diverse arrays has gained the attention of researchers due to their anticipated capacity to mimic the function of olfactory receptors in the mammalian olfactory system. A major hurdle facing the field is the limited ability to generate large numbers of different sensing elements out of the relatively limited number of conducting polymers. In this work, chemically distinct electrocopolymerized sensors were created with pyrrole by using different substituted vinyl groups (e.g., styrene, m-styrene, 4-chlorostyrene, 4-chloromethylstyrene, 4-t-butylstyrene, 4-t-butoxystyrene, divinyl benzene and vinyl pyridine) as monomers. Copolymer films were grown at different potentials that created an additional level of sensor diversity by altering the relative amount of each of the components. By controlling the deposition conditions in this way, as well as setting different redox potentials to the films after growth changes the copolymer's composition and the amount of dopant anion that is incorporated into the sensing films respectively. The composition of the sensing films was also altered by changing the dopant-type during copolymer growth, thereby providing another mechanism for varying the chemical nature of the sensing materials. The chemical diversity among the 27 different sensing polymers used in this work is demonstrated with differential partitioning of 12 analytes, ranging from alcohols and solvents to fuels. This process of generating significant numbers of chemically distinct sensors represents a significant advancement in the efforts to approach the number of olfactory receptors in mammals. The fact that the sensing polymers can be electropolymerized onto very small conducting contacting electrodes shows that this approach is compatible with integrated circuit technology.
机译：由于其预期的能力模拟了哺乳动物嗅觉系统中的嗅觉受体的功能，所以化学多样化阵列的发展已经引起了研究人员的注意。面向该领域的主要障碍是产生大量不同感测元件的有限能力，从相对有限数量的导电聚合物。在这项工作中，通过使用不同取代的乙烯基（例如，苯乙烯，M-苯乙烯，4-氯苯，4-氯甲基苯乙烯，4-叔丁基苯乙烯，4-叔丁氧基苯乙烯，二乙烯基苯和二乙烯基苯和吡咯，用吡咯产生化学不同的电离传感器。乙烯基吡啶）作为单体。通过改变每个组分的相对量，在不同电位下生长共聚物膜，其产生额外的传感器分集。通过以这种方式控制沉积条件，并且在生长改变共聚物的组合物和掺杂到感测膜中的掺杂剂阴离子中，将不同的氧化还原电位设定为膜。通过在共聚物生长期间改变掺杂剂型，也改变了传感膜的组成，从而提供了一种改变传感材料的化学性质的另一种机制。在该工作中使用的27种不同的感测聚合物中的化学多样性在于12分析物的差异分配来证明，从醇和溶剂到燃料。产生大量的化学上不同的传感器的该方法代表了在哺乳动物中接近嗅觉受体的数量的显着进步。感测聚合物可以电聚合到非常小的导电接触电极上的事实表明，这种方法与集成电路技术相容。

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  • 来源
    《RSC Advances》 |2016年第39期|共11页
  • 作者

    Iyogun Akin A.; Buchanan Douglas A.; Freund Michael S.;

  • 作者单位

    Univ Manitoba Dept Chem Winnipeg MB R3T 2N2 Canada;

    Univ Manitoba Dept Elect &

    Comp Engn Winnipeg MB R3T 5V6 Canada;

    Univ Manitoba Dept Chem Winnipeg MB R3T 2N2 Canada;

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  • 正文语种 eng
  • 中图分类 化学;
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