Highly Stable Flexible Organic Electrochemical Transistors with Natural Rubber Latex Additives DOI Open Access
Miguel H. Boratto, Carlos F. O. Graeff, Sanggil Han

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(16), P. 2287 - 2287

Published: Aug. 13, 2024

Organic electrochemical transistors (OECTs) have attracted considerable interest in the context of wearable and implantable biosensors due to their remarkable signal amplification combined with seamless integration into biological systems. These properties underlie OECTs’ potential utility across a range bioelectronic applications. One main challenges practical applications is mechanical limitation PEDOT:PSS, most typical conductive polymer used as channel layer, when OECTs are applied stretchable bioelectronics. In this work, we address critical issue by employing natural rubber latex (NRL) an additive PEDOT:PSS improve flexibility stretchability OECT channels. Although inclusion NRL leads decrease transconductance, mainly reduced carrier mobility from 0.3 0.1 cm2/V·s, maintain satisfactory exceeding 5 mS. Furthermore, it demonstrated that exhibit excellent stability while maintaining performance even after 100 repetitive bending cycles. This therefore, suggests NRL/PEDOT:PSS composite film can be deployed for wearable/implantable applications, where high needed. finding opens up new avenues use more robust versatile biosensors.

Language: Английский

Nanoporous Conjugated Polymer Aerogel Films for High‐Performance Electrochemical Transistors DOI
Zhenyu Hu,

Puzhong Gu,

Xiao Yang

et al.

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

Published: Aug. 30, 2024

Abstract Organic electrochemical transistors (OECTs) possess low operating voltage and excellent amplification capability show promising applications in biosensors flexible electronics. However, the active layers of OECTs are usually dense films, which limited ion penetration/transport, resulting performances OECTs. Here, unprecedented high‐performance multifunctional based on nanoporous (mainly 2–60 nm), high‐specific‐surface‐area (255–281 m 2 g −1 ), conjugated polymer aerogel films developed. The structures effectively facilitate leading to significantly enhanced transconductance (48.5–53.5 mS) on/off ratio (6.4 × 10 4 ) compared with those devices. OECT‐based glucose sensors exhibit an ultralow detection limit 1 p , approximately two three orders magnitude lower than previously reported OECT sensors, ultrabroad range –5 . They can detect trace amounts sweat, serum, saliva, urine real time. Moreover, be used for artificial synapses electrocardiogram monitoring. This work provides a powerful strategy toward highly sensitive biosensors, synapses, electrophysiological signal

Language: Английский

Citations

6
Balancing Electroactive Backbone and Oligo(Ethylene Oxy) Side‐Chain Content Improves Stability and Performance of Soluble PEDOT Copolymers in Organic Electrochemical Transistors DOI Creative Commons
Olivier Bardagot, Brandon T. DiTullio, Austin L. Jones

et al.

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

Published: Oct. 2, 2024

Abstract The development of devices based on organic electrochemical transistors (OECTs) relies the rational design high‐performing mixed ionic‐electronic conductors (OMIECs). Here, a series solution‐processable copolymers composed unsubstituted 2,2′‐bis‐(3,4‐ethylenedioxy)thiophene (biEDOT) and 3,4‐propylenedioxythiophene (ProDOT) substituted with linear or branched oligo(ethylene oxy) (OE) side chains are reported. By varying size chains, it is found that highest OECT performance achieved near equivalent molar mass chain electroactive conjugated polymer repeat unit. With four OE units (PE 2 ‐OE 4, content 49%), OECTs state‐of‐the‐art normalized transconductance (453 ± 70 S cm −1 ) µC* (830 37 F V s ), rapid dedoping kinetics, pulsing stability 99% I DS retention over 200 ON/OFF cycles achieved. A consistent improvement in decreasing side‐chain also observed. origin enhanced rationalized by correlating losses to changes channel absorbance cycle after during operation. This work encourages calculation an OMIEC when designing chains. It shows PE backbone short promising structure for (bio)electrochemical devices.

Language: Английский

Citations

4
Thermal Processing Creates Water‐Stable PEDOT:PSS Films for Bioelectronics DOI Creative Commons
Siddharth Doshi,

Margaux O. A. Forner,

Pingyu Wang

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Organic mixed ionic‐electronic conductors have emerged as a key material for the development of bioelectronic devices due to their soft mechanical properties, biocompatibility, and high volumetric capacitance. In particular, PEDOT:PSS has become choice because it is highly conductive, easily processible, commercially available. However, dispersible in water, leading delamination films when exposed biological environments. For this reason, chemical cross–linking agents such (3‐glycidyloxypropyl)trimethoxysilane (GOPS) are used stabilize but at cost decreased electrical performance. Here, shown that thin water‐stable by simply baking temperatures (>150 °C) short time (≈ 2 min). It heat‐treated stable chemically‐cross–linked counterparts, with performance maintained >20 days both vitro vivo. The eliminate electrically insulating cross–linkers, resulting 3× increase Applying thermal energy using focused femtosecond laser enables direct patterning 3D microstructures. treatment method compatible wide range substrates readily substituted into existing workflows manufacturing devices, enabling its rapid adoption field bioelectronics.

Language: Английский

Citations

0
Balancing performance and stability characteristics in organic electrochemical transistor DOI Creative Commons
Nikolay Mukhin, Andreas Dietzel, Vadim Issakov

et al.

Biosensors and Bioelectronics, Journal Year: 2025, Volume and Issue: 281, P. 117476 - 117476

Published: April 14, 2025

Language: Английский

Citations

0
Stretchable all-gel organic electrochemical transistors DOI Creative Commons
Linlin Lu, Xu Liu,

Puzhong Gu

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: April 23, 2025

Language: Английский

Citations

0
Multimodal bioelectronics: A pathway to digital health management DOI

Mengxi Gu,

Chuan Fei Guo, Yu Song

et al.

Matter, Journal Year: 2025, Volume and Issue: 8(5), P. 102048 - 102048

Published: May 1, 2025

Language: Английский

Citations

0
Bistable organic electrochemical transistors: enthalpy vs. entropy DOI Creative Commons
Lukas M. Bongartz, Richard Kantelberg,

Tommy Meier

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Aug. 9, 2024

Abstract Organic electrochemical transistors (OECTs) underpin a range of emerging technologies, from bioelectronics to neuromorphic computing, owing their unique coupling electronic and ionic charge carriers. In this context, various OECT systems exhibit significant hysteresis in transfer curve, which is frequently leveraged achieve non-volatility. Meanwhile, general understanding its physical origin missing. Here, we introduce thermodynamic framework that readily explains the emergence bistable operation via interplay enthalpy entropy. We validate model through temperature-resolved characterizations, material manipulation, thermal imaging. Further, reveal deviations Boltzmann statistics for subthreshold swing reinterpret existing literature. Capitalizing on these findings, finally demonstrate single-OECT Schmitt trigger, thus compacting multi-component circuit into single device. These insights provide fundamental advance physics application non-conventional where symmetry-breaking phenomena are pivotal unlock new paradigms information processing.

Language: Английский

Citations

3
A focused review on organic electrochemical transistors: A potential futuristic technological application in microelectronics DOI
Ahsan Raza, Umar Farooq, Khalida Naseem

et al.

Microchemical Journal, Journal Year: 2024, Volume and Issue: 207, P. 111737 - 111737

Published: Sept. 20, 2024

Language: Английский

Citations

3
A double-conducting polymer nanowire-based electrochemical aptasensor for highly sensitive and low fouling detection of cortisol in saliva DOI

N. Li,

Zhenteng Zhang,

Tingting Tian

et al.

Microchimica Acta, Journal Year: 2024, Volume and Issue: 191(10)

Published: Sept. 16, 2024

Language: Английский

Citations

2
Advancements and Applications of Conjugated Polyelectrolytes and Conjugated Oligoelectrolytes in Bioanalytical and Electrochemical Contexts DOI Creative Commons
Sarah J. Cox‐Vázquez,

Batul Shakir,

Oscar Medrano

et al.

JACS Au, Journal Year: 2024, Volume and Issue: 4(12), P. 4592 - 4611

Published: Dec. 3, 2024

In the past decade, conjugated oligoelectrolytes (COEs) and polyelectrolytes (CPEs) have emerged at forefront of active materials in bioanalytical electrochemical settings due to their unique electronic ionic properties. These possess π-conjugated backbones with functionalities ends side chains, granting them water solubility facilitating processability, exploration, applications aqueous environments. this perspective, basis for evaluating figures merit selected contexts will be provided contextualized. We primarily discuss roles biosensing, bioimaging, bioelectrosynthesis, contexts, such as organic transistors (OECTs), microbial fuel cells (MFCs), use charge-storing materials. Emphasis placed on role improving efficiency utility within these applications. also explore fundamental mechanisms that govern behavior highlight innovative strategies perspectives developing next generation CPEs COEs integration into practical devices.

Language: Английский

Citations

1