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Conducting polymers in electronic chemical sensors

Nature Materials volume 2, pages 19–24 (2003)Cite this article

Abstract

Conducting organic polymers have found two main kinds of application in electronics so far: as materials for construction of various devices and as selective layers in chemical sensors. In either case, interaction with ambient gases is critical. It may compromise the performance of a device based on conducting polymers, whereas it is beneficial in a sensor. Conductivity has been the primary property of interest. Work function — related to conductivity, but in principle a different property — has received only scant attention. Our aim here is to discuss the usability of conducting polymers in both types of electronic applications in light of these two parameters.

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Figure 1: a, Open structure of polyaniline prepared by electropolymerization of 0.1 M aniline from aqueous solution of 2 M HBF4.
Figure 2: Chemiresistor.
Figure 3: Comparison between the work-function responses of conducting polymer layers to different vapours.
Figure 4: Conducting polymers in field-effect transistors.
Figure 5: A sensor array consisting of eight CHEMFETs.

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Acknowledgements

This work was supported by the National Science Foundation, grant no. CHE-9816017.

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  1. School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, 30332-0400, Georgia, USA

    Jiri Janata & Mira Josowicz

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Correspondence to Jiri Janata.

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Janata, J., Josowicz, M. Conducting polymers in electronic chemical sensors. Nature Mater 2, 19–24 (2003). https://doi.org/10.1038/nmat768

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