University of Regensburg, Institute of Analytical Chemistry, Chemo- and Biosensors, Germany.
Anal Chim Acta. 2011 Feb 21;687(2):105-13. doi: 10.1016/j.aca.2010.11.030. Epub 2010 Nov 19.
This review covers the development of measurement configurations for chemiresistors based on conducting polymers. The simplest chemiresistors are based on application of a two-electrode technique. Artifacts caused by contact resistance can be overcome by application of a four-electrode technique. Simultaneous application of the two- and four-electrode measurement configurations provides an internal control of sensor integrity. An incorporation of two additional electrodes controlling the redox state of chemosensitive polymers and connecting to the measurement electrodes through liquid or (quasi)solid electrolyte results in a six-electrode technique; an electrically driven regeneration of such sensors allows one to perform fast and completely reversible measurements.
这篇综述涵盖了基于导电聚合物的电阻式化学传感器的测量结构的发展。最简单的电阻式化学传感器基于应用两电极技术。通过应用四电极技术可以克服接触电阻引起的假象。同时应用两电极和四电极测量结构可以对内传感器的完整性进行控制。通过另外两个电极的引入，可以控制化学敏感聚合物的氧化还原状态，并通过液体或（准）固态电解质与测量电极相连，这就形成了六电极技术；通过电驱动对这类传感器进行再生，可实现快速且完全可逆的测量。
