Designing organic mixed conductors for electrochemical transistor applications

Nature Reviews Materials, Journal Year: 2024, Volume and Issue: 9(4), P. 249 - 265

Published: Feb. 29, 2024

Language: Английский

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Organic electrochemical neurons for neuromorphic perception

Nature Electronics, Journal Year: 2024, Volume and Issue: 7(7), P. 525 - 536

Published: July 8, 2024

Language: Английский

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Organic Mixed Ionic–Electronic Conductors for Bioelectronic Sensors: Materials and Operation Mechanisms

Advanced Science, Journal Year: 2023, Volume and Issue: 11(27)

Published: Dec. 26, 2023

Abstract The field of organic mixed ionic‐electronic conductors (OMIECs) has gained significant attention due to their ability transport both electrons and ions, making them promising candidates for various applications. Initially focused on inorganic materials, the exploration conduction expanded especially polymers, owing advantages such as solution processability, flexibility, property tunability. OMIECs, particularly in form possess electronic ionic functionalities. This review provides an overview OMIECs aspects covering mechanisms charge including transport, ionic–electronic coupling, well conducting/semiconducting conjugated polymers applications bioelectronics, (multi)sensors, neuromorphic devices, electrochromic devices. show promise bioelectronics compatibility with biological systems modulate resembling principles systems. Organic electrochemical transistors (OECTs) based offer potential bioelectronic applications, responding external stimuli through modulation transport. An in‐depth recent research achievements using categorized physical chemical devices circuit is presented.

Language: Английский

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The Quest for Air Stability in Organic Semiconductors

Chemistry of Materials, Journal Year: 2023, Volume and Issue: 36(1), P. 28 - 53

Published: Dec. 18, 2023

Organic semiconductors (OSCs) have emerged as promising materials for a variety of organic electronic devices due to their unique combination electrical conductivity, mechanical flexibility, and processability. Despite significant advancements in the performance functionalities devices, widespread adoption stems from challenges long-term operational stability sensitivity moisture oxygen ambient air. Although several reviews respective fields highlight role molecular structure optimizing device performance, unified picture achieve air these is still lacking. To this end, review provides an in-depth thermodynamic consideration redox reactions involving species pristine or doped OSCs that limit corresponding This also explores recent both polymer dopant design rationalizes commonalities drive development air-stable conducting polymers various applications. The insights presented contribute understanding critical played by realization reliable commercially viable devices.

Language: Английский

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Highly Light-Harvesting MOF-on-MOF Heterostructure: Cascading Functionality to Flexible Photogating of Organic Photoelectrochemical Transistor and Bienzyme Cascade Detection

Analytical Chemistry, Journal Year: 2024, Volume and Issue: 96(8), P. 3679 - 3685

Published: Feb. 14, 2024

Recently, organic photoelectrochemical transistor (OPECT) bioanalysis has become a prominent technique for the high-performance detection of biomolecules. However, as sensitive index OPECT, dynamic regulation transconductance (gm) is still severely deficient. Herein, this work reports new photosensitive metal–organic framework (MOF-on-MOF) heterostructure effective modulation maximum gm and natural bienzyme interfacing toward choline detection. Specifically, bidentate ligand MOF (b-MOF) was assembled onto UiO-66 (u-MOF) by modular assembly method, which could facilitate charge separation generate enhanced photocurrents offer biophilic environment immobilization oxidase (ChOx) horseradish peroxidase (HRP) through hydrogen-bonded bridges. The OPECT be flexibly altered increased light intensity to maximal value at zero gate bias, achieved with limit 0.2 μM. This reveals potential MOF-on-MOF heterostructures futuristic optobioelectronics.

Language: Английский

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Single‐Component Electroactive Polymer Architectures for Non‐Enzymatic Glucose Sensing

Advanced Science, Journal Year: 2024, Volume and Issue: 11(27)

Published: March 23, 2024

Organic mixed ionic-electronic conductors (OMIECs) have emerged as promising materials for biological sensing, owing to their electrochemical activity, stability in an aqueous environment, and biocompatibility. Yet, OMIEC-based sensors rely predominantly on the use of composite matrices enable stimuli-responsive functionality, which can exhibit issues with intercomponent interfacing. In this study, approach is presented non-enzymatic glucose detection by harnessing a newly synthesized functionalized monomer, EDOT-PBA. This monomer integrates electrically conducting receptor moieties within single organic component, obviating need complex preparation. By engineering conditions electrodeposition, two distinct polymer film architectures are developed: pristine PEDOT-PBA molecularly imprinted PEDOT-PBA. Both demonstrated proficient binding signal transduction capabilities. Notably, (MIP) architecture faster stabilization upon uptake while it also enabled lower limit detection, standard deviation, broader linear range sensor output compared its non-imprinted counterpart. material design not only provides robust efficient platform but offers blueprint developing selective diverse array target molecules, tuning units correspondingly.

Language: Английский

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Enhancing the Thermoelectric Properties of Conjugated Polymers by Suppressing Dopant‐Induced Disorder

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(25)

Published: April 1, 2024

Abstract Doping is a crucial strategy to enhance the performance of various organic electronic devices. However, in many cases, random distribution dopants conjugated polymers leads disruption polymer microstructure, severely constraining achievable Here, it shown that by ion‐exchange doping polythiophene‐based P[(3HT) 1‐x ‐stat‐(T) x ] ( = 0 (P1), 0.12 (P2), 0.24 (P3), and 0.36 (P4)), remarkably high electrical conductivity >400 S cm −1 power factor >16 µW m K −2 are achieved for copolymer P3, ranking among highest ever reported unaligned P3HT‐based films, significantly higher than P1 (<40 , <4 ). Although both exhibit comparable field‐effect transistor hole mobilities ≈0.1 2 V s pristine state, after doping, Hall effect measurements indicate P3 exhibits large mobility up 1.2 outperforming (0.06 GIWAXS measurement determines in‐plane π – stacking distance doped 3.44 Å, distinctly shorter (3.68 Å). These findings contribute resolving long‐standing dopant‐induced‐disorder issues P3HT serve as an example achieving fast charge transport highly efficient electronics.

Language: Английский

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Advanced Neuromorphic Applications Enabled by Synaptic Ion‐Gating Vertical Transistors

Advanced Science, Journal Year: 2024, Volume and Issue: 11(27)

Published: May 17, 2024

Bioinspired synaptic devices have shown great potential in artificial intelligence and neuromorphic electronics. Low energy consumption, multi-modal sensing recording, multifunctional integration are critical aspects limiting their applications. Recently, a new device architecture, the ion-gating vertical transistor (IGVT), has been successfully realized timely applied to perform brain-like perception, such as vision, touch, taste, hearing. In this short time, IGVTs already achieved faster data processing speeds more promising memory capabilities than many conventional devices, even while operating at lower voltages consuming less power. This work focuses on cutting-edge progress of IGVT technology, from outstanding fabrication strategies design realization low-voltage multi-sensing for artificial-synapse The fundamental concepts IGVTs, signal processing, transduction, plasticity, multi-stimulus perception discussed comprehensively. contribution draws special attention development optimization flexible sensor technologies presents roadmap future high-end theoretical experimental advancements research that mostly achievable by IGVTs.

Language: Английский

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Surface Functionalization with (3-Glycidyloxypropyl)trimethoxysilane (GOPS) as an Alternative to Blending for Enhancing the Aqueous Stability and Electronic Performance of PEDOT:PSS Thin Films

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(47), P. 54711 - 54720

Published: Nov. 14, 2023

Organic mixed ionic-electronic conductors, such as poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), are essential materials for the fabrication of bioelectronic devices due to their unique ability couple and transport ionic electronic charges. The growing interest in has led development organic electrochemical transistors (OECTs) that can operate aqueous solutions transduce signals biological origin into measurable signals. A common challenge with OECTs is maintaining stability performance PEDOT:PSS films operating under conditions. Although conventional approach blending dispersions a cross-linker (3-glycidyloxypropyl)trimethoxysilane (GOPS) helps ensure strong adhesion device substrates, it also impacts morphology thus electrical properties films, which leads significant reduction OECTs. In this study, we instead functionalize only surface substrates GOPS introduce silane monolayer before spin-coating dispersion on substrate. all cases, having blend increased metrics, three times higher conductivity, volumetric capacitance, mobility-capacitance product [μC*] value OECT devices, ultimately leading record 406 ± 39 F cm-1 V-1 s-1 amorphous PEDOT:PSS. This does not come at expense operational stability, both functionalization show similar when subjected pulsed gate bias stress, long-term cycling tests, aging over 150 days. Overall, study establishes novel using blended cross-linker, achieving high-performance conductors stable water bioelectronics.

Language: Английский

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The Role of Side Chains and Hydration on Mixed Charge Transport in n‐Type Polymer Films

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: March 30, 2024

Abstract Introducing ethylene glycol (EG) side chains to a conjugated polymer backbone is well‐established synthetic strategy for designing organic mixed ion‐electron conductors (OMIECs). However, the impact that film swelling has on conduction properties yet be scoped, particularly electron‐transporting ( n ‐type) OMIECs. Here, authors investigate effect of length branched EG charge transport ‐type OMIECs based naphthalene‐1,4,5,8‐tetracarboxylic‐diimide‐bithiophene backbone. Atomic force microscopy (AFM), grazing‐incidence wide‐angle X‐ray scattering (GIWAXS), and scanning tunneling (STM) are used establish similarities between common‐backbone films in dry conditions. Electrochemical quartz crystal microbalance with dissipation monitoring (EQCM‐D) situ GIWAXS measurements reveal stark changes microstructure during electrochemical doping, depending chain length. It found even loss crystallite content upon contact aqueous electrolyte, can effectively charges it rather high water harms electronic interconnectivity within OMIEC films. These results highlight importance controlling uptake impede devices.

Language: Английский

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