Automated Measurement of Electrogenerated Redox Species Degradation Using Multiplexed Interdigitated Electrode Arrays

Schematic depicting the automated workflow use in experiments, and results from systematic studies of the effects redoxmer concentration and water content on redoxmer stability.

Scientific Achievement

Microfabricated devices enabled an automated methodology to quickly screen redoxmer degradation kinetics at concentrations up to 0.5 M.

Significance and Impact

The ability to perform these experiments at high concentrations will enable high-throughput screening of redoxmer stability at practical concentrations.

Research Details

  • A unique linear relationship was seen between the natural logarithm of collection efficiency and interelectrode gap width that holds of a range of degradation rates.
  • Experiments were ran automatically using custom multiplexing hardware and python library for universal potentiostat control.
  • Microfabricated devices were designed to handle non-aqueous solvent and plasma cleaning for electrode defouling.

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DOI: 10.1021/acsmeasuresciau.2c00054

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