Several novel and effective methods for chiral polyaniline to recognize the configuration of alanine

Several novel and effective identifying methods for identifying enantiomeric configuration based on optically active polyaniline (PANI) were studied. Both (+)- and (−)-PANI-based electrodes exhibited significantly different electrochemical performances with d- and l-alanine aqueous solutions. The cyclic voltammogram (CV), tafel (TAF) and open circuit potential (OCP) were measured in d- and l-alanine electrolytes. The results showed that the PANI electrode had relatively good electric conductivity and electrochemical activity with the configuration being dependent on the electrolyte: the higher the peak current of CV and the corrosive current, the lower the polarization resistance, corrosive potential and the open circuit potential, which can be used for characterizing and identifying the configuration of alanine.