Voltammetric sensor array based on conducting polymer-modified electrodes for the discrimination of liquids
Voltammetric sensor array based on conducting polymer-modified electrodes for the discrimination of liquids
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DOI：
10.1016/j.electacta.2004.05.010
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发表时间：
2004-10-15
影响因子：
6.6
通讯作者：
de Saja, JA
中科院分区：
文献类型：
--
作者：
Arrieta, AA;Apetrei, C;de Saja, JA
在这项工作中，开发了一种基于导电聚合物的新型伏安电极，并将其用作传感系统的传感单元。聚合物传感器是通过使用一系列掺杂剂将相应的单体（3-甲基噻吩、苯胺和吡咯）电沉积到铂盘上而获得的。聚吡咯电极的电化学响应特别丰富且稳定。此外，通过使用大阴离子或氧化还原阴离子作为掺杂剂可以改善它们的电化学特性。使用这些在稳定性和响应多样性方面表现出最佳性能的传感器构建了多通道液体传感器。传感器阵列已暴露于具有不同味道特性（甜、苦、酸、咸和涩）的溶液中。当暴露于所研究的溶液时，每个传感器都会表现出特征性的电化学响应，从而提供高度的交叉选择性。所获得信号的主成分分析 (PCA) 可以区分测试的解决方案。 (C) 2004 Elsevier Ltd. 保留所有权利。
In this work, a novel type of voltammetric electrodes based on conducting polymers has been developed and used as sensing units of a sensory system. Polymeric sensors have been obtained by electrodeposition of the corresponding monomers (3-methylthiophene, aniline and pyrrole) onto platinum disks using a range of doping agents. The electrochemical response of polypyrrole electrodes is particularly rich and stable. Moreover, their electrochemical characteristics can be improved by using large anions or redox anions as dopants.A multichannel liquid sensor has been constructed using those sensors showing the best performances in terms of stability and variety of responses. The array of sensors has been exposed to solutions with distinct taste properties (sweet, bitter, acid, salty and astringent). Each sensor shows a characteristic electrochemical response when exposed to the studied solutions, providing a high degree of cross-selectivity. The principal component analysis (PCA) of the obtained signals has allowed the discrimination of the solutions tested. (C) 2004 Elsevier Ltd. All rights reserved.