Organic mixed conductors for electrochemical transistors

Matter, Год журнала: 2023, Номер 6(10), С. 3132 - 3164

Опубликована: Май 24, 2023

Язык: Английский

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Designing organic mixed conductors for electrochemical transistor applications

Nature Reviews Materials, Год журнала: 2024, Номер 9(4), С. 249 - 265

Опубликована: Фев. 29, 2024

Язык: Английский

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Acceptor Functionalization via Green Chemistry Enables High‐Performance n‐Type Organic Electrochemical Transistors for Biosensing, Memory Applications

Advanced Functional Materials, Год журнала: 2023, Номер 34(15)

Опубликована: Июль 27, 2023

Abstract The organic electrochemical transistor (OECT) is one of the most versatile building blocks within bioelectronics device toolbox. While p‐type semiconductors have progressed as OECT channel materials, only a few n‐type been reported, precluding development advanced sensor‐integrated OECT‐based complementary circuits. Herein, green aldol polymerization uses to synthesize lactone‐based conjugated polymers. Fluorination acceptor endows fully locked backbone with low‐lying lowest unoccupied molecular orbital, facilitating efficient ionic‐to‐electronic charge coupling. resulting polymer has record‐high performance high product mobility and capacitance ( µC * = 108 F cm −1 V s ), excellent (0.912 2 low threshold voltage (0.02 V), fast switching speed τ ON , OFF 336 µs,108 µs). This work demonstrates two types architectures applications enabled by this OECT, i.e., an artificial synapse amplifier for detecting α‐synuclein, potential biomarker Parkinson's disease. study shows that materials enable gain OECTs can be developed via route, diverse form factors these devices take promise exploration other application areas.

Язык: Английский

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Organic Electrochemical Transistors for Biomarker Detections

Advanced Science, Год журнала: 2024, Номер 11(27)

Опубликована: Янв. 23, 2024

The improvement of living standards and the advancement medical technology have led to an increased focus on health among individuals. Detections biomarkers are feasible approaches obtaining information about status, disease progression, response treatment individual. In recent years, organic electrochemical transistors (OECTs) demonstrated high electrical performances effectiveness in detecting various types biomarkers. This review provides overview working principles OECTs their performance multiple biomarkers, with a advances representative applications wearable implantable biomarker detections, perspective for future development OECT-based sensors.

Язык: Английский

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π‐Conjugated Polymers for High‐Performance Organic Electrochemical Transistors: Molecular Design Strategies, Applications and Perspectives

Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Abstract The last decade has witnessed significant progress in organic electrochemical transistors (OECTs) due to their enormous potential applications various bioelectronic devices, such as artificial synapses, biological interfaces, and biosensors. remarkable advance this field is highly powered by the development of novel mixed ionic/electronic conductors (OMIECs). π‐Conjugated polymers (CPs), which are widely used optoelectronics, emerging key channel materials for OECTs. In review, after briefly introducing OECT, we then mainly focus on latest CPs high‐performance correlations structure, basic physicochemical properties, device performance elucidated evaluating electronic characters, optoelectronic OECT performance. Then, CP‐based OECTs presented. Finally, discuss several remaining issues or challenges give our insights into advancing enhanced

Язык: Английский

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High‐Performance Organic Electrochemical Transistors and Neuromorphic Devices Comprising Naphthalenediimide‐Dialkoxybithiazole Copolymers Bearing Glycol Ether Pendant Groups

Advanced Functional Materials, Год журнала: 2022, Номер 32(27)

Опубликована: Апрель 8, 2022

Abstract Organic electrochemical transistors (OECTs) have emerged as building blocks for low power circuits, biosensors, and neuromorphic computing. While p‐type polymer materials OECTs are well developed, the choice of high‐performance n‐type polymers is limited, despite being essential cation metabolite crucial constructing complementary circuits. N‐type conjugated that efficient ion‐to‐electron transduction highly desired applications. In this contribution, three non‐fused, planar naphthalenediimide (NDI)‐dialkoxybithiazole (2Tz) copolymers, which systematically increase amount polar tri(ethylene glycol) (TEG) side chains: PNDI2OD‐2Tz (0 TEG), PNDIODTEG‐2Tz (1 PNDI2TEG‐2Tz (2 reported. It demonstrated OECT performance increases with number TEG chains resulting from progressively higher hydrophilicity larger electron affinities. Benefiting high mobility, excellent ion conduction capability, transduction, low‐lying lowest unoccupied molecular orbital energy level, 2 achieves close to 10 5 on‐off ratio, fast switching, 1000 stable operation cycles in aqueous electrolyte, has a long shelf life. Moreover, chain substituted exhibits good conductance state retention over two orders magnitudes resistive random‐access memory devices, highlighting its potential

Язык: Английский

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From p‐ to n‐Type Mixed Conduction in Isoindigo‐Based Polymers through Molecular Design

Advanced Materials, Год журнала: 2022, Номер 34(14)

Опубликована: Янв. 25, 2022

Organic mixed ionic and electronic conductors are of significant interest for bioelectronic applications. Here, three different isoindigoid building blocks used to obtain polymeric with vastly structural properties which can be further fine-tuned through the choice comonomer unit. This work shows how careful design scaffold afford highly planar polymer structures high degrees delocalization, while subtle modifications control dominant charge carrier (hole or electron) when probed in organic electrochemical transistors. A combination experimental computational techniques is employed probe electrochemical, structural, series turn allows derivation important structure-property relations this promising class materials context bioelectronics. Ultimately, these findings outline robust molecular-design strategies isoindigo-based that support efficient p-type, n-type, ambipolar transistor operation an aqueous environment.

Язык: Английский

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Facilely Accessible Porous Conjugated Polymers toward High-Performance and Flexible Organic Electrochemical Transistors

Chemistry of Materials, Год журнала: 2022, Номер 34(4), С. 1666 - 1676

Опубликована: Фев. 2, 2022

Porous morphologies have shown great potential in optimizing the capacitance and charge carrier transport for semiconducting polymers organic electrochemical transistors (OECTs). Nevertheless, it remains arduous time-consuming to obtain such desired microstructures due requirement of rigorous humidity control templates/additives. Herein, three new glycolated conjugated based on a fused-ring cyclopentadithiophene (CPDT) skeleton are developed, which feature readily obtained large-area porous thin films via spin-casting from binary solvent mixtures under ambient conditions. These afford fascinating capacitances reaching maximum 353 F cm–3, is highest value reported date p-type OECT materials. The optimal combination volumetric hole mobility representative polymer enables fabrication OECTs with high μC* up 476 cm–1 V–1 s–1 current retention 98% upon 600 switching cycles. Moreover, corresponding flexible exhibit exceptional mechanical stability at various bending radii down 5 mm repetitive This work provides simple yet effective strategy fabricate high-performance devices, will further advance development mixed ionic–electronic conductors research fields beyond.

Язык: Английский

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The effect of residual palladium on the performance of organic electrochemical transistors

Nature Communications, Год журнала: 2022, Номер 13(1)

Опубликована: Дек. 27, 2022

Organic electrochemical transistors are a promising technology for bioelectronic devices, with applications in neuromorphic computing and healthcare. The active component enabling an organic transistor is the mixed ionic-electronic conductor whose optimization critical realizing high-performing devices. In this study, influence of purity molecular weight examined p-type polythiophene n-type naphthalene diimide-based polymer improving performance safety transistors. Our preparative GPC purification reduced Pd content polymers improved their mobility by ~60% 80% p- materials, respectively. These findings demonstrate paramount importance removing residual Pd, which was concluded to be more than polymer's weight, improve that there readily available improvement stability many reported conductors.

Язык: Английский

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The Effect of Glycol Side Chains on the Assembly and Microstructure of Conjugated Polymers

ACS Nano, Год журнала: 2022, Номер 16(12), С. 21303 - 21314

Опубликована: Дек. 14, 2022

Conjugated polymers with glycol-based chains, are emerging as a material class promising applications organic mixed ionic-electronic conductors, particularly in bioelectronics and thermoelectrics. However, little is still known about their microstructure the role of side chains determining intermolecular interactions polymer packing. Here, we use combination electrospray deposition scanning tunneling microscopy to determine prototypical glycolated conjugated (pgBTTT p(g2T-TT)) submonomer resolution. Molecular dynamics simulations same surface-adsorbed exhibit an excellent agreement experimental images, allowing us extend characterization atomic scale. Our results prove that, similarly alkylated counterparts, assemble through interdigitation although significant differences found conformation interaction patterns. A model proposed that identifies driving force for assembly tendency adopt free analogues, i.e., polyethylene glycol, alkyl or ethylene glycol respectively. For both classes polymers, it also demonstrated backbone determined higher degree by between rather than torsional potential energy. The generalization these findings from two-dimensional (2D) monolayers three-dimensional thin films discussed, together opportunity this type 2D study gain so far inaccessible, subnm-scale information on polymers.

Язык: Английский

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