Recently, electrochemical sensors have emerged as tools for polyaromatic hydrocarbons (PAH) detection that are cost-effective, easy to produce and use, highly selective and sensitive, and with good reproducibility. Polypyrrole may be easily produced from polymerization of pyrrole, by chemical as well as electrochemical methods, to produce dimensionally stable semi-conductive polymer materials, under mild synthesis conditions. In this study, polypyrrole was used as the stable molecular framework within which to create an imprint of the desired polyaromatic hydrocarbon, in situ, at glassy carbon electrodes. The molecularly imprinted polymer (MIP) sensors were washed to remove the imprint and subsequently characterized by atomic force microscopy (AFM), scanning electron microscopy (SEM), and cyclic voltammetry (CV). The MIP sensors were then applied to the detection of pyrene and non-imprinted polymers (NIP) sensors were also evaluated for comparison with the MIP sensors. Calibration curves obtained for the detection of the pyrene at the MIP sensors in aqueous media reported limits of detection (LOD) of 2.28 × 10⁻⁷ M for pyrene and limit of quantification (LOQ) of 6.92 × 10⁻⁷ M (n = 3). The sensitivity of the MIP sensors (32.53 A/M) determined from the slopes of the calibration curves reported twice the value measured for NIP sensors (14.48 A/M). The selectivity of the MIP sensors was further evaluated in the presence of a second PAH with the same number of rings as the imprinted PAH, i.e., chrysene, to evaluate the selectivity of the MIP sensor towards shape and size of the analyte.

近来，电化学传感器已经成为用于聚芳烃（PAH）检测的工具，其具有成本效益，易于生产和使用，高度选择性和灵敏性以及良好的可重复性的优点。聚吡咯可以通过吡咯的聚合，通过化学和电化学方法容易地制备，以在温和的合成条件下制备尺寸稳定的半导体聚合物材料。在这项研究中，聚吡咯被用作稳定的分子框架，在该框架内可以在玻璃碳电极上原位形成所需聚芳烃的烙印。洗涤分子印迹聚合物（MIP）传感器以除去印迹，然后通过原子力显微镜（AFM），扫描电子显微镜（SEM）和循环伏安法（CV）对其进行表征。然后将MIP传感器应用于the的检测，并且还评估了非压印聚合物（NIP）传感器以与MIP传感器进行比较。在水介质中的MIP传感器上检测the所获得的校准曲线报告的检测限（LOD）为2.28×10⁻为^-7 M，定量极限（LOQ）为6.92×10 ^-7 M（n = 3）。根据校准曲线的斜率确定的MIP传感器（32.53 A / M）的灵敏度报告为NIP传感器（14.48 A / M）的测量值的两倍。在第二个PAH的存在下，进一步评估MIP传感器的选择性，该第二个PAH的环数与所印的PAH相同，即为碳烯，以评估MIP传感器对分析物的形状和大小的选择性。