Electropolymerized of aniline as a new molecularly imprinted polymer for determination of phenol: A study for phenol sensor

This paper deals with the application of polyaniline conducting polymer as a new sensor material for detection of phenol. The sensor is designed using bare carbon paste electrode (cPE), nonimprinted polymer-modified electrode (CPE/NIP) and imprinted polymer-modified electrode (CPE/MIP). These electrodes were prepared by electropolymerization of the monomer (aniline) in the presence of phenol as the template onto a carbon paste electrode. A CPE/MIP sensor which is modified with carbon paste electrode was able to detect the analyte more selectively. Several results regarding a decreasing in sensor activity were discussed. The ability of the electrodes to recognize the analyte was characterized using cyclic voltammetry (CV) in of 0.1M K3[Fe(CN)6]/0.1M K4[Fe(CN)6] acted as an electroactive specie at scan rate100 mV/s between potentials of -0.2-0.8 V by cyclic voltammetry under the optimal experimental condition.