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

doi:10.3390/s91209896

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Sensors 2009, 9(12), 9896-9902; doi:10.3390/s91209896

Article

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

Na Young Shim¹, Daniel A. Bernards¹, Daniel J. Macaya¹, John A. DeFranco¹, Maria Nikolou¹, Róisín M. Owens^2,3 and George G. Malliaras^1,3,*

¹ Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA ² Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA ³ Centre Microélectronique de Provence, Ecole Nationale Supérieure des Mines de Saint Etienne, 13541 Gardanne, France

* Author to whom correspondence should be addressed.

Received: 19 October 2009; in revised form: 25 November 2009 / Accepted: 27 November 2009 / Published: 4 December 2009

(This article belongs to the Section Biosensors)

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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.

Keywords: organic electrochemical transistor; glucose sensor; ferrocene mediator

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Cite This Article

MDPI and ACS Style

Shim, N.Y.; Bernards, D.A.; Macaya, D.J.; DeFranco, J.A.; Nikolou, M.; Owens, R.M.; Malliaras, G.G. All-Plastic Electrochemical Transistor for Glucose Sensing Using a Ferrocene Mediator. Sensors 2009, 9, 9896-9902.

AMA Style

Shim N.Y., Bernards D.A., Macaya D.J., DeFranco J.A., Nikolou M., Owens R.M., Malliaras G.G. All-Plastic Electrochemical Transistor for Glucose Sensing Using a Ferrocene Mediator. Sensors. 2009; 9(12):9896-9902.

Chicago/Turabian Style

Shim, Na Young; Bernards, Daniel A.; Macaya, Daniel J.; DeFranco, John A.; Nikolou, Maria; Owens, Róisín M.; Malliaras, George G. 2009. "All-Plastic Electrochemical Transistor for Glucose Sensing Using a Ferrocene Mediator." Sensors 9, no. 12: 9896-9902.

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