Organic Microbial Electrochemical Transistor Monitoring Extracellular Electron Transfer
Gábor Méhes, Arghyamalya Roy, Xenofon Strakosas, Magnus Berggren +2
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- FUNDAMENTAL
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Abstract
MR-1 integrated onto organic electrochemical transistors comprising poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) combined with poly(vinyl alcohol) (PVA). Bacteria are attached to the gate of the transistor by a chronoamperometric method and the successful attachment is confirmed by fluorescence microscopy. Monitoring EET with the OMECT configuration is achieved due to the inherent amplification of the transistor, revealing fast time-responses to lactate. The limits of detection when using microfabricated gates as charge collectors are also investigated. The work is a first step toward understanding and monitoring EET in highly confined spaces via microfabricated organic electronic devices, and it can be of importance to study exoelectrogens in microenvironments, such as those of the human microbiome.
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Identifiers
- Journal
- Advanced Science
- Year
- 2020