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- W2022076338 abstract "Abstract Direct current electrokinetic systems generally require Faradaic reactions to occur at a pair of electrodes to maintain an electric field in an electrolyte connecting them. The vast majority of such systems, e.g. electrophoretic separations (capillary electrophoresis) or electroosmotic pumps (EOPs), employ electrolysis of the solvent in these reactions. In many cases, the electrolytic products, such as H + and OH − in the case of water, can negatively influence the chemical or biological species being transported or separated, and gaseous products such as O 2 and H 2 can break the electrochemical circuit in microfluidic devices. This article presents an EOP that employs the oxidation/reduction of the conjugated polymer poly(3,4‐ethylenedioxythiophene), rather than electrolysis of a solvent, to drive flow in a capillary. Devices made with poly(3,4‐ethylenedioxythiophene) electrodes are compared with devices made with Pt electrodes in terms of flow and local pH change at the electrodes. Furthermore, we demonstrate that flow is driven for applied potentials under 2 V, and the electrodes are stable for potentials of at least 100 V. Electrochemically active electrodes like those presented here minimize the disadvantage of integrated EOP in, e.g. lab‐on‐a‐chip applications, and may open new possibilities, especially for battery‐powered disposable point‐of‐care devices." @default.
- W2022076338 created "2016-06-24" @default.
- W2022076338 creator A5074198234 @default.
- W2022076338 creator A5082813262 @default.
- W2022076338 date "2011-03-01" @default.
- W2022076338 modified "2023-10-16" @default.
- W2022076338 title "Electrolysis‐reducing electrodes for electrokinetic devices" @default.
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- W2022076338 doi "https://doi.org/10.1002/elps.201000617" @default.
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