All-plastic electrochemical transistor for glucose sensing using a ferrocene mediator.
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Peer-reviewed
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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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Keywords
ferrocene mediator, glucose sensor, organic electrochemical transistor
Journal Title
Sensors (Basel)
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Journal ISSN
1424-8220
1424-8220
1424-8220
Volume Title
9
Publisher
MDPI AG