Electronic tongues (e-tongues) are analytical technologies that have been developed to mimic the biological tongues which are non-specific, low-selective, and cross-sensitive taste systems. The e-tongues consist of an array of sensors, able to produce electrical signals that correspond to particular chemical compositions of a sample solution. The performance and efficiency of e-tongues have been optimized for many years via the development of novel materials and technologies. Various conjugated polymers (CPs) have been used in e-tongues over the past decades thanks to their interesting electrical properties and wide-ranging chemistries. In most studies, CPs such as polypyrrole (PPy), polyaniline (PANI), polythiophene (PT), and poly(3,4-ethylenedioxythiophene) (PEDOT), have drawn considerable interest in e-tongues because of their controllable electrical properties, relatively facile and cost-effective preparation, and good environmental stability that can significantly enhance their versatility, compared to other types of e-tongues. This review article reports major conjugated polymer-based electronic tongues (CPETs) that have been studied with these aforementioned CPs over the last two decades.

电子舌头 (e-tongues) 是一种分析技术，已开发用于模仿非特异性、低选择性和交叉敏感味觉系统的生物舌头。电子舌头由一系列传感器组成，能够产生与样品溶液的特定化学成分相对应的电信号。多年来，通过开发新材料和新技术，电子舌的性能和效率得到了优化。在过去的几十年里，各种共轭聚合物 (CP) 已被用于电子舌，这要归功于它们有趣的电学特性和广泛的化学性质。在大多数研究中，CPs 如聚吡咯 (PPy)、聚苯胺 (PANI)、聚噻吩 (PT) 和聚 (3,4-乙烯二氧噻吩) (PEDOT)，与其他类型的电子舌相比，电子舌具有可控的电性能、相对容易和具有成本效益的制备以及可显着增强其多功能性的良好环境稳定性，因此引起了人们对电子舌的极大兴趣。这篇评论文章报告了在过去二十年中使用上述 CP 研究的主要基于共轭聚合物的电子舌 (CPET)。