Flexible conducting polymer transistors with supercapacitor function

Zhang, Yi; Bettini, Luca Giacomo; Tomasello, Gaia; Kumar, Prajwal; Piseri, P.; Valitova, Irina; Milani, Paolo; Soavi, Francesca; Cicoira, Fabio

doi:10.1002/polb.24244

Cited by 26 publications

(17 citation statements)

References 53 publications

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“…Ns-C allowed the penetration of IL ions and their reversible adsorption and organization into an electrostatic double layer in the ns-C porous matrix over a wide range of electrode thicknesses [12]. [13], and (b) of an electrolyte-gated transistor, as described in Refs [55,61]. SEM and AFM images show, at different magnification, the granular and rough morphology of the porous bulk and upper surface of ns-C film.…”

Section: Nanostructured Nanoporous Ionogelsmentioning

confidence: 99%

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Ionic liquids under nanoscale confinement

Borghi

Podestà

2020

Advances in Physics: X

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The confinement of room-temperature ionic liquids (ILs) in nanoscale geometries, where at least one, but often all three dimensions are reduced down to lengths comparable to the anion-cation size, put the ILs into a quite different condition with respect to their bulk phase. An understanding of the properties of the ILs confined in a nanoscale-constrained geometry is of both fundamental and practical interest. In particular, the spatial restriction of ILs promotes a strong interaction of the ILs with the surface of the confining matrix, which strongly affects their properties, like the phase transition behavior, layering near surface walls, wetting, as well as ionic mobility. This short review is especially concerned with the interfacial confinement of ILs on solid substrates, in the form of very thin films, or inside porous nanomaterials.

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Section: Nanostructured Nanoporous Ionogelsmentioning

confidence: 99%

“…Ns-C electrodes have been used also as gate electrodes inside hybrid flexible transistors (electrolyte-gated transistor) [55,61], based on organic polymer and ionic liquid as electrolyte (also schematically shown in Figure 2(b)).…”

Section: Nanostructured Nanoporous Ionogelsmentioning

confidence: 99%

Ionic liquids under nanoscale confinement

Borghi

Podestà

2020

Advances in Physics: X

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“…Low power consumption, high sensitivity, stability in aqueous electrolytes, and biological and mechanical compatibility with living tissues are the advantages that OECTs have over other electronics for a variety of biomedical applications. [96,115,[131][132][133][134][135] In particular, electrochemical transistors are expected to be License. [127] Copyright 2018, The Authors, published by Wiley-VCH.…”

Section: Prerequisites For Biomedical Applications: Performance and Smentioning

confidence: 99%

Designing Polymeric Mixed Conductors and Their Application to Electrochemical‐Transistor‐Based Biosensors

Kim

et al. 2020

Macromolecular Bioscience

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of biomedical use, the prerequisite of mixed conductors is extended to biocompatibility and long-term stability in vivo. Recently, remarkable advances have been made in materials research, and considerable efforts have been invested to satisfy these demands. [32-35] Despite a good number of review articles on organic bioelectronics and OECTs, only a few reviews have focused on the correlation between the molecular structures of mixed conductors and the performance/stability of resultant OECTs as biosensors. In this article, we review the relationship among intramolecular/intermolecular structures, properties, and stability, and provide the suggested ideal structures for high-performance stable OECT-based biosensors. The first part covers mixed conduction by comparing OECTs and electrolyte-gated transistors. Subsequently, we discuss the structure of the most well-known mixed conductor, poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) (PEDOT:PSS) and the chemical aspects of other ion-permeable conjugated polymers. Next, we address the recent biomedical applications of OECTs to determine the prerequisites for their high device performance and stability in terms of biochemical sensing and bioelectric signal recording in vivo. The last part depicts the structural design criteria investigated in recent publications and, finally, the suggested perspective on the promising chemical structures and the outlook are provided. 2. Organic Electrochemical Transistors Generally, an OECT employs an electrolyte solution/gel for channel current modulation using gate biases. Seemingly, it operates similar to an electrolyte-gated organic field-effect transistor (EGOFET). However, the actual working principle is different; therefore, understanding their differences provides a clear concept of OECTs. In this section, the differences between these two devices are addressed, and the relevant material characteristics that can aid OECT operation are suggested. Finally, the advantages of OECT over EGOFET are discussed in light of the aforementioned features. In EGOFET, a bias applied to the polarizable gate electrode induces the migration of ions in the electrolyte, and the ions form an electrical double layer at both the gate-electrolyte and electrolyte-channel interfaces (Scheme 1, left) because the active layer is ion-impermeable. [36-39] Due to the electrical Organic electrochemical transistors that employ polymeric mixed conductors as their active channels are one of the most prominent biosensor platforms because of their signal amplification capability, low fabrication cost, mechanical flexibility, and various properties tunable through molecular design. For application to biomedical devices, polymeric mixed conductors should fulfill several requirements, such as excellent conductivities of both holes/electrons and ions, long-term operation stability, and decent biocompatibility. However, trade-offs may exist, for instance, one between ionic conduction and overall device stability. In this report, the fundamental un...

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“…The last decade has seen an increased interest in the field of conducting polymers (CPs), like polyacetylene (PA), polythiophene (PTh), polypyrrole (PPy), polyparaphenylene (PPPh), polyaniline (PANI), and polyorthotoluidine (POT), due to their use in a variety of applications, such as sensors, light weight batteries, solar cells, transistors, anti-static coatings, compact capacitors, and electromagnetic shielding for various devices [1][2][3][4][5][6][7][8][9][10][11]. Among different CPs, polypyrrole received special interest because of its biocompatibility, cost efficiency, and excellent environmental stability along with controllable electrical conductivity as compared to other CPs [12].…”

Section: Introductionmentioning

confidence: 99%

MoO3 Nanobelts Embedded Polypyrrole/SIS Copolymer Blends for Improved Electro-Mechanical Dual Applications

2020

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This research endeavor aimed to develop thin film blends of polypyrrole (PPy) and poly (styrene-isoprene-styrene) (SIS) with MoO3 as a nanofiller for improved mechanical and electrical properties to widen its scope in the field of mechatronics. This study reports blends of polypyrrole (PPy) and poly (styrene-isoprene-styrene) (SIS) tri-block copolymer showing improved mechanical and electrical attributes while employing MoO3 nanobelts as nanofillers that additionally improves the abovementioned properties in the ensuing nanocomposites. The synthesis of PPy/SIS blends and MoO3/PPy/SIS nanocomposites was well corroborated with XRD, SEM, FTIR, and EDS analysis. Successful blending of PPy was yielded up to 15 w/w% PPy in SIS, as beyond this self-agglomeration of PPy was observed. The results showed a remarkable increase in the conductivity of insulating SIS copolymer from 1.5 × 10−6.1 to 0.343 Scm−1 and tensile strength up to 8.5 MPa with the 15 w/w% PPy/SIS blend. A further enhancement of the properties was recorded by embedding MoO3 nanobelts with varying concentrations of the nanofillers into 15 w/w% PPy/SIS blends. The mechanical strength of the polymeric nanocomposites was enhanced up to 11.4 MPa with an increase in conductivity up to 1.51 Scm−1 for 3 w/w% MoO3/PPy-SIS blends. The resultant product exhibited good potential for electro-mechanical dual applications.

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Flexible conducting polymer transistors with supercapacitor function

Cited by 26 publications

References 53 publications

Ionic liquids under nanoscale confinement

Ionic liquids under nanoscale confinement

Designing Polymeric Mixed Conductors and Their Application to Electrochemical‐Transistor‐Based Biosensors

MoO3 Nanobelts Embedded Polypyrrole/SIS Copolymer Blends for Improved Electro-Mechanical Dual Applications

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