SERS Study of Acridine Adsorption on Copper Electrode

摘要

It was demonstrated that acridinium cation does not interact directly with copper electrode surface in acid sulfate solution. In the presence of chloride, acridinium cation adsorbed on the electrode as an ion pair with chloride anion. In the whole potential range investigated, from 0 V to a chloride desorption potential at about -0.6 V, acridinium did not undergo any redox-process. By shifting a potential towards negative values acridinium tends to reorient to a position perpendicular to the electrode plane. The formation of the ion pair stabilized chloride adsorption on the electrode surface.