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Issue 41, 2012
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Detection of bacteria with organic electrochemical transistors

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Abstract

Organic electrochemical transistors (OECTs) are successfully used for the detection of bacteria (E. coli O157:H7) in KCl electrolytes. The transfer characteristic of the OECT shifts to higher gate voltage after bacteria are captured on the active layer of the device, which can be attributed to the electrostatic interaction between the bacteria and the transistor. The OECT with a Pt gate electrode shows a voltage shift of up to 55 mV after the capture of bacteria. The influence of the ion concentration of the electrolyte on the device performance is also studied. It is expected that the organic transistors will find promising applications as disposable bacteria sensors.

Graphical abstract: Detection of bacteria with organic electrochemical transistors

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Publication details

The article was received on 07 Jun 2012, accepted on 03 Sep 2012 and first published on 04 Sep 2012


Article type: Paper
DOI: 10.1039/C2JM33667G
Citation: J. Mater. Chem., 2012,22, 22072-22076
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    Detection of bacteria with organic electrochemical transistors

    R. He, M. Zhang, F. Tan, P. H. M. Leung, X. Zhao, H. L. W. Chan, M. Yang and F. Yan, J. Mater. Chem., 2012, 22, 22072
    DOI: 10.1039/C2JM33667G

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