Organic Electrochemical Transistors (OECTs) Toward Flexible and Wearable Bioelectronics.

Published on Nov 13, 2020in Molecules4.412
· DOI :10.3390/MOLECULES25225288
Ariana Villarroel Marquez4
Estimated H-index: 4
(CNRS: Centre national de la recherche scientifique),
Niall McEvoy52
Estimated H-index: 52
(Trinity College, Dublin),
Amir Pakdel19
Estimated H-index: 19
(Trinity College, Dublin)
Organic electronics have emerged as a fascinating area of research and technology in the past two decades and are anticipated to replace classic inorganic semiconductors in many applications. Research on organic light-emitting diodes, organic photovoltaics, and organic thin-film transistors is already in an advanced stage, and the derived devices are commercially available. A more recent case is the organic electrochemical transistors (OECTs), whose core component is a conductive polymer in contact with ions and solvent molecules of an electrolyte, thus allowing it to simultaneously regulate electron and ion transport. OECTs are very effective in ion-to-electron transduction and sensor signal amplification. The use of synthetically tunable, biocompatible, and depositable organic materials in OECTs makes them specially interesting for biological applications and printable devices. In this review, we provide an overview of the history of OECTs, their physical characterization, and their operation mechanism. We analyze OECT performance improvements obtained by geometry design and active material selection (i.e., conductive polymers and small molecules) and conclude with their broad range of applications from biological sensors to wearable devices.
Organic electrochemical transistors (OECTs) have attracted considerable interests for various applications ranging from biosensors to digital logic circuits and artificial synapses. However, the ma...
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An approach providing cation-selective poly-(3,4-ethylenedioxythiophene)(PEDOT):polyelectrolyte-mixed conductors is presented in this communication based on the structural modification of this ambivalent (ionic and electronic conductive) polymer complex. First, an 18-crown-6 moiety is integrated into the styrene sulfonate monomer structure as a specific metal cation scavenger particularly targeting K(+) versus Na(+) detection. This newly functionalized monomer is characterized by (1) H NMR titra...
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Abstract Resulting from its wide range of beneficial properties, the conjugated conducting polymer poly(3,4‐ethylenedioxythiophene) (PEDOT) is a promising material in a number of emerging applications. These material properties, particularly promising in the field of bioelectronics, include its well‐known high‐degree of mechanical flexibility, stability, and high conductivity. However, perhaps the most advantageous property is its ease of fabrication: namely, low‐cost and straight‐forward deposi...
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Abstract Organic Electrochemical Transistor (OECTs) are devices that can measure the ionic content of liquid samples and biological systems. The response of an OECT can provide information on the physiological conditions and characteristics of a biological system. In a typical OECT configuration, the system or sample is connected to a reference electrode (the gate) and to a semiconducting material, typically PEDOT:PSS, with two other terminals (the drain and the source) for connection to an exte...
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This research was supported by King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research Competitive Research Grants (CRG) OSR award number OSR-2016-CRG5-3003 to S.I. and I.M. Figure 1, inset of Figure 2a, and TOC illustration were produced by Xavier Pita, scientific illustrator at KAUST.
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