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An all-plastic organic electrochemical transistor utilizing a ferrocene mediator and PEDOT:PSS electrodes can be fabricated via a one-layer process to detect glucose down to the micromolar range. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

December 4, 2009Open Access

All-Plastic Electrochemical Transistor for Glucose Sensing Using a Ferrocene Mediator

NSNa Young ShimWonkwang University DBDaniel A. BernardsUniversity of California, San Francisco DMDaniel J. MacayaBrigham and Women's Hospital

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Abstract

We demonstrate a glucose sensor based on an organic electrochemical transistor (OECT) in which the channel, source, drain, and gate electrodes are made from the conducting polymer poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) (PEDOT:PSS). The OECT employs a ferrocene mediator to shuttle electrons between the enzyme glucose oxidase and a PEDOT:PSS gate electrode. The device can be fabricated using a one-layer patterning process and offers glucose detection down to the micromolar range, consistent with levels present in human saliva.

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