Proton concentration sensor/modulator for sulfonated and hydroxylated polyaniline electrodes. Epstein, Arthur J.; Yue, Jiang; Burley, David R. (Ohio State University Research Foundation, USA). U.S., 12 pp. CODEN: USXXAM. US 5250163 A 931005. Patent written in English. Application: US 91-800363 911127. CAN 120:44746

Abstract

Hydroxylated polyaniline and sulfonated polyaniline (I) elec. conductive compns. are used in sensing and modulating pH of a medium in assocn. with them. The pH of a medium in the vicinity of a sensing electrode is modulated by placing a SPAN electrode in the medium and applying a voltage to the electrode to controllably emit or absorb protons from the electrode to modulate the pH of the medium in the vicinity of the electrode. Furthermore, the activity/state of a biosensor/catalyst is sensed for the activity/state correlative with pH.