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Review
. 2008 Jan 9;8(1):118-141.
doi: 10.3390/s8010118.

Electrochemical Sensors Based on Organic Conjugated Polymers

Md Aminur Rahman  1 , Pankaj Kumar  2 , Deog-Su Park  3 , Yoon-Bo Shim  4
Affiliations
Review

Electrochemical Sensors Based on Organic Conjugated Polymers

Md Aminur Rahman et al. Sensors (Basel). .

Abstract

Organic conjugated polymers (conducting polymers) have emerged as potentialcandidates for electrochemical sensors. Due to their straightforward preparation methods,unique properties, and stability in air, conducting polymers have been applied to energystorage, electrochemical devices, memory devices, chemical sensors, and electrocatalysts.Conducting polymers are also known to be compatible with biological molecules in aneutral aqueous solution. Thus, these are extensively used in the fabrication of accurate,fast, and inexpensive devices, such as biosensors and chemical sensors in the medicaldiagnostic laboratories. Conducting polymer-based electrochemical sensors and biosensorsplay an important role in the improvement of public health and environment because rapiddetection, high sensitivity, small size, and specificity are achievable for environmentalmonitoring and clinical diagnostics. In this review, we summarized the recent advances inconducting polymer-based electrochemical sensors, which covers chemical sensors(potentiometric, voltammetric, amperometric) and biosensors (enzyme based biosensors,immunosensors, DNA sensors).

Keywords: Amperometry; Biosensors; Chemical Sensors; DNA Sensors; Electrochemical Methods; Gas Sensors; Immunosensors; Impedance; Organic Conjugated Polymer; Potentiometry.

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Figures

Figure 1.
Figure 1.
Schematic presentation of an electrochemical sensor.
Figure 2.
Figure 2.
Schematic presentation of a biosensor.
Figure 3.
Figure 3.
Configuration of a (a) competitive and (b) non-competitive immunosensor principles using immobilized antibody on to a conducting polymer film.
Figure 4.
Figure 4.
Schematics of (a) Direct and (b) detection of DNA hybridization.
See this image and copyright information in PMC

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References

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    1. Guiseppi-Elie A., Wallace G. G., Matsue T. In: Handbook of Conducting Polymers. 2nd ed. Skotheim T. A., Elsenbaumer R., Reynolds J. R., editors. Marcel Dekker; New York: 1998. pp. 963–991.
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    1. Shim Y.-B., Park S.-M. Electrochemistry of conductive polymers VII, Autocatalytic rate constant for polyaniline growth. Synth. Met. 1989;29:E169–E174.

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