Conductive and alignment-optimized porous fiber conduits with electrical stimulation for peripheral nerve regeneration

Materials Today Bio, Journal Year: 2024, Volume and Issue: 26, P. 101064 - 101064

Published: April 18, 2024

Autologous nerve transplantation (ANT) is currently considered the gold standard for treating long-distance peripheral defects. However, several challenges associated with ANT, such as limited availability of donors, donor site injury, mismatched diameters, and local neuroma formation, remain unresolved. To address these issues comprehensively, we have developed porous poly(lactic-

Language: Английский

---

PEDOT-based stretchable optoelectronic materials and devices for bioelectronic interfaces

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This review summarized the strategies and mechanisms for improving conductivity, mechanical properties stability of PEDOT:PSS, as well reliable micropatterning technologies optoelectronic devices applied at bio-interfaces.

Language: Английский

---

PEDOT:PSS based reprocessingly multifunctional dispersions and their optoelectronic films with excellent self-healing capability

Synthetic Metals, Journal Year: 2024, Volume and Issue: 306, P. 117629 - 117629

Published: April 26, 2024

Language: Английский

---

Low-Heat-Driven Self-Healing Flexible Electrochromic Film Relying on a PEDOT:PSS-Based All-Organic Composite

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: 6(14), P. 8598 - 8607

Published: July 13, 2024

Language: Английский

---

Surface‐Grafted Biocompatible Polymer Conductors for Stable and Compliant Electrodes for Brain Interfaces

Advanced Healthcare Materials, Journal Year: 2024, Volume and Issue: 13(29)

Published: July 16, 2024

Abstract Durable and conductive interfaces that enable chronic high‐resolution recording of neural activity are essential for understanding treating neurodegenerative disorders. These implants require long‐term stability small contact areas. Consequently, they often coated with a blend polymers crosslinked to enhance durability despite the potentially deleterious effect crosslinking on mechanical electrical properties. Here grafting poly(3,4 ethylenedioxythiophene) scaffold, poly(styrenesulfonate)‐ b ‐poly(poly(ethylene glycol) methyl ether methacrylate block copolymer brush gold, in controlled tunable manner, by surface‐initiated atom‐transfer radical polymerization (SI‐ATRP) is described. This “block‐brush” provides high volumetric capacitance (120 F cm ─3 ), strong adhesion metal (4 h ultrasonication), improved surface hydrophilicity, against 10 000 charge–discharge voltage sweeps multiarray electrode. In addition, block‐brush film showed 33% current pulsing. approach can open numerous avenues exploring specialized polymer brushes bioelectronics research application.

Language: Английский

---

Cyclic Voltammetry and Spectroelectrochemistry of Two Common Thiophene Polymers Reveals Ion Diffusion and Polaron Wave Function Extent

Chemistry of Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Language: Английский

---

Thermal Processing Creates Water‐Stable PEDOT:PSS Films for Bioelectronics

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

---

Stimuli-Responsive Conductive Polymers for Bioelectronics

Chemistry of Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Language: Английский

---

Exploring Mixed Ionic–Electronic-Conducting PVA/PEDOT:PSS Hydrogels as Channel Materials for Organic Electrochemical Transistors

Polymers, Journal Year: 2024, Volume and Issue: 16(11), P. 1478 - 1478

Published: May 23, 2024

Here, we report the preparation and evaluation of PVA/PEDOT:PSS-conducting hydrogels working as channel materials for OECT applications, focusing on understanding their charge transport transfer properties. Our conducting are based crosslinked PVA with PEDOT:PSS interacting via hydrogen bonding exhibit an excellent swelling ratio ~180–200% w/w. electrochemical impedance studies indicate that processes at material not trivial compared to polymeric films. The most relevant feature is ionic through swollen hydrogel clearly different from solution, diffusion govern low-frequency regime. In addition, have performed in operando Raman spectroscopy analyses devices supported by first-principle computational simulations corroborating doping/de-doping under applied gate voltages. maximum transconductance (gm~1.05 μS) volumetric capacitance (C*~2.3 F.cm−3) values these can be promising candidates devices.

Language: Английский

---

Unveiling the Spectroscopic Signatures of Poly(3,4-ethylenedioxythiophene) by Controlling Polaron and Bipolaron Concentrations

The Journal of Physical Chemistry C, Journal Year: 2024, Volume and Issue: 128(43), P. 18612 - 18621

Published: Oct. 18, 2024

The electronic and optical properties of conductive polymers (CPs) are related to the formation polarons bipolarons localized along polymer backbone. Their concentration is affected by conformational morphological features CPs, making it crucial understand how they chain conformation π-electron delocalization. In this work, we studied modulation in PEDOT:PSS after post-treatment with hydrazine H2SO4, which influence properties. Through a combination electron spin resonance spectroscopy, UV–vis–NIR Raman conductivity measurements, evaluate changes PEDOT, delocalization within We present experimental evidence supporting recently revised interpretation spectrum PEDOT:PSS, through theoretical analysis, propose new PEDOT:PSS. Furthermore, provide first presence polaron pairs triplet state have S = 1, were only predicted theoretically up point.

Language: Английский

---