Accession Number : ADA260074


Title :   Electronic Control of pH at Sulfonated Polyaniline Electrodes


Descriptive Note : Technical rept. 31 May 1991-30 Jun 1992


Corporate Author : PENNSYLVANIA UNIV PHILADELPHIA DEPT OF CHEMISTRY


Personal Author(s) : Yue, J ; Epstein, A J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a260074.pdf


Report Date : 01 Jul 1992


Pagination or Media Count : 12


Abstract : The pH of aqueous solutions in the vicinity of a thin self-doped conducting polyaniline electrode was electrochemically modulated using both cyclic voltammetry and step potential techniques. Changes in pH were measured directly by using a microcombination pH probe. The experimental results demonstrate that the polymer behaves as a proton ejector during oxidation and a proton absorber during reduction. This potential-controlled pH change near the polymer coated electrode may be applied to many fields benefitting from electronic control of the proton environment near an electrode surface, for example, control of enzyme activity.


Descriptors :   *POLYMERS , *ELECTROCHEMISTRY , *ELECTRODES , ELECTRONICS , PROTONS , SULFONATES , PH FACTOR , EJECTORS , VOLTAMMETRY , OXIDATION , REDUCTION , ENZYMES , PROBES


Subject Categories : Polymer Chemistry
      Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE