All-plastic electrochemical transistor for glucose sensing using a ferrocene mediator.
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.
Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA.
Na Young
NY
Shim
Daniel A
DA
Bernards
Daniel J
DJ
Macaya
John A
JA
Defranco
Maria
M
Nikolou
Róisín M
RM
Owens
George G
GG
Malliaras