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    • 22. 发明授权
    • Proton concentration sensor/modulator for sulfonated and hydroxylated
polyaniline electrodes
    • 用于磺化和羟基化聚苯胺电极的质子浓度传感器/调制器
    • US5250163A
    • 1993-10-05
    • US800363
    • 1991-11-27
    • Arthur J. EpsteinJiang YueDavid R. Burley
    • Arthur J. EpsteinJiang YueDavid R. Burley
    • G01N27/30G01N27/26
    • G01N27/4167
    • Broadly, the present invention takes advantage of the ability of self-protonated sulfonated polyaniline (SPAN) to sense and/or modulate pH of a medium in the vicinity of a SPAN electrode. Accordingly, one aspect of the present invention is directed to a method for sensing pH of a medium in the vicinity of a sensing electrode wherein a SPAN electrode and a counter-electrode are placed in a medium and an indicia of said SAN correlative with the pH of said medium is monitored. As another aspect of the present invention, 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 said electrode to modulate the pH of the medium in the vicinity of the electrode. As a further aspect of the present invention, the activity/state of a biosensor/catalyst is sensed for the activity/state correlative with pH. As a further aspect of the present invention, the activity/state of a biosensor/catalyst, where the activity/state is correlative with pH, is controlled by associating the biosensor/catalyst with a SPAN electrode in contact with a medium containing said biosensor/catalyst, and applying a voltage to said electrode to controllably emit or absorb protons from said electrode to control the activity/state of said biosensor/catalyst.
    • 广泛地,本发明利用自质子化磺化聚苯胺(SPAN)在SPAN电极附近感测和/或调节介质的pH的能力。 因此,本发明的一个方面涉及一种用于感测感测电极附近的介质的pH的方法,其中将SPAN电极和对电极放置在介质中,并且所述SAN的标记与pH相关 的所述介质被监测。 作为本发明的另一方面,通过将SPAN电极放置在介质中并向电极施加电压来调制感测电极附近的介质的pH,以可控制地从所述电极发射或吸收质子以调节pH 介质在电极附近。 作为本发明的另一方面,检测与pH相关的活性/状态的生物传感器/催化剂的活性/状态。 作为本发明的另一方面,活性/状态与pH相关的生物传感器/催化剂的活性/状态通过将生物传感器/催化剂与含有所述生物传感器/催化剂的介质接触的SPAN电极相关联来控制, 催化剂,并向所述电极施加电压以可控制地从所述电极发射或吸收质子,以控制所述生物传感器/催化剂的活性/状态。