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

Sensors

Na Young Shim¹  Daniel A. Bernards¹  Daniel J. Macaya¹  John A. DeFranco¹  Maria Nikolou¹  Róisín M. Owens² 

[1] Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA;Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA

关键词: organic electrochemical transistor;    glucose sensor;    ferrocene mediator;   

DOI  :  10.3390/s91209896

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.