Poly(o‐phenylenediamine)‐Film‐Coated Electrode Having a Permselective Response to Halogenide Ions

A poly(o-phenylenediamine)(PoPD)-film-coated electrode had electrochemical responses only to two halogenide ions, I - and Br - , while it had no responses to other inorganic ions examined. In this case, the film was found to be permeable to the ions. The permeability of the ions was controllable by incorporating quinones into the film. Furthermore, the incorporation enhanced the permselectivity of the film to the halogenide ions