University of Texas System

Chong-Yang Liu

Allen J Bard

Described herein is an apparatus comprising an electrochemical cell that employs a capacitive counter electrode and a faradaic working electrode. The capacitive counter electrode reduces the amount of redox products generated at the counter electrode while enabling the working electrode to generate redox products. The electrochemical cell is useful for controlling the redox products generated and/or the timing of the redox product generation. The electrochemical cell is useful in assay methods, including those using electrochemiluminescence. The electrochemical cell can be combined with additional hardware to form instrumentation for assay methods.

Electrochemistry and electrogenerated chemiluminescence with a single faradaic electrode

A method is provided for determining the presence or amount of an analyte in a sample and includes the steps of contacting a faradaic working electrode to a solution comprising the optionally pre-processed sample and an electrolyte, contacting a capacitive counter electrode to the solution, supplying electrical energy between the faradaic working electrode and the capacitive counter electrode sufficient to provide for faradaic charge transfer at the faradaic working electrode, and measuring at least one of (i) light, (ii) current, (iii) voltage, and (iv) charge to determine the presence or amount of the analyte in the sample.

Growing community of inventors

Austin, TX, United States of America

Chong-Yang Liu