Contorted acene ribbons for stable and ultrasensitive neural probes

Science Advances, Journal Year: 2025, Volume and Issue: 11(14)

Published: April 2, 2025

Organic materials that conduct both electrons and ions are integral to implantable bioelectronics because of their conformable nature. There is a dearth these highly sensitive cations, which the majority on surface neurons. This manuscript offers solution using an extended ribbon structure defect-free, providing high electronic mobility along its fused backbone, while edge ribbons promotes ionic conductivity. We incorporated mixed ion/electron conductors into neural probes implanted them in rodent brain where they offer suite useful properties: cation sensitivity, stability over several weeks after implantation, biocompatibility. These represent innovative class biosensors.

Language: Английский

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Stretchable Fluorescent Polyurethane Containing Fluorene-Based Trimer for Blue Polymer Light-Emitting Diodes

Macromolecules, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Language: Английский

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Open-flask, ambient temperature direct arylation synthesis of mixed ionic-electronic conductors

Science Advances, Journal Year: 2025, Volume and Issue: 11(19)

Published: May 7, 2025

Conjugated polymers are widely studied for application areas ranging from energy technology to wearable electronics and bioelectronics. To develop a truly sustainable technology, environmentally benign synthesis is essential. Here, the open-flask of multitude conjugated at room temperature by ambient direct arylation polymerization (ADAP) demonstrated. The batch over 100 grams polymer in green solvent continuous droplet flow without any solid support described. Polymers prepared ADAP characterized improved structural order compared materials other methods. Hence, organic electrochemical transistors (OECTs) feature beyond state-of-the-art electrical properties, i.e., an OECT hole mobility μ as high 6 cm 2 V −1 s , volumetric capacitance C * 200 F −3 thus figure merit [μ ] exceeding 1100 . Thus, paves way large-scale production high-performance polymers.

Language: Английский

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Decoding the halogenation cost-performance paradox in organic solar cells

Nature Reviews Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 21, 2025

Language: Английский

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Highly Transmissive, Processable, Highly Conducting and Stable Polythiophene Derivatives via Direct (Hetero)arylation Polymerization

ACS Macro Letters, Journal Year: 2024, Volume and Issue: 13(9), P. 1133 - 1138

Published: Aug. 15, 2024

The development of modern optoelectronic devices increases the need for lightweight and flexible transparent conductors. It is thus essential to develop new eco-friendly materials that can be easily processed fabrication such devices. For this purpose, synthesis self-doped, highly conducting, transmissive, water-processable polythiophene derivatives was performed via direct heteroarylation polymerization method a protection/deprotection strategy. Stable conductivities up 1000 S cm–1 have been obtained. Champion (P1 P7) were scaled roll-to-roll compatible slot-die coating demonstrate their large area applicability. best coated films exhibited optical transmittance greater than 79% at 550 nm with sheet resistances 116 Ω □–1. These values are comparable indium–tin oxide on plastic present viable alternative metal oxide-based electrodes.

Language: Английский

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Regulating Molecular Structure of S,N‐Heteroacene Non‐fullerene Acceptors to Achieve Efficient Photoelectric Properties^†

Chinese Journal of Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 16, 2024

Comprehensive Summary The ternary strategy has demonstrated its efficacy in improving charge transport organic solar cells (OSCs). Here, three novel non‐fullerene acceptors, SN6C9‐4F, SN6C9‐4Cl and SN6C10‐4F, based on S,N‐heteroacene linear backbone were designed synthesized. acceptors exhibit excellent molecular coplanarity, high crystallinity possess a deep‐lying lowest unoccupied orbital energy level, which is beneficial for injection field‐effect transistors (OFETs). Notably, the OFET devices all achieved impressive electron mobilities, with SN6C10‐4F achieving up to 0.73 cm 2 ·V –1 ·s , one of highest values among A‐D‐A type small molecules. In addition, OSCs device PBDB‐T:SN6C9‐4F exhibited best power conversion efficiency 12.07% owing optimal morphology enhanced transport. Moreover, incorporation SN6C9‐4F into efficient PM6:L8‐BO binary system form resulted extended absorption range, donor crystallization, improved more balanced transport, ultimately leading an improvement PCE from 17.78% 18.32%. This study highlights potential developing distinct structures Y‐series broaden regulate providing approach enhance OSCs.

Language: Английский

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Conjugated Polymer‐Based Photo‐Crosslinker for Efficient Photo‐Patterning of Polymer Semiconductors

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

Published: Sept. 30, 2024

Abstract Photo‐patterning of polymer semiconductors using photo‐crosslinkers has shown potential for organic circuit fabrication via solution processing techniques. However, the performance patterning, including resolution ( R ), UV light exposure dose, sensitivity S and contrast γ remains unsatisfactory. In this study, a novel conjugated based photo‐crosslinker PN3 , Figure 1a) is reported first time, which entails phenyl‐substituted azide groups in its side chains. Due to π – interactions between backbone those semiconductors, exhibits superior miscibility with compared commonly used small molecule 4Bx (Figure 1a). Consequently, photo‐patterning demonstrates improved much lower higher . By utilizing electron beam lithography, patterned arrays resolutions down 500 nm clearer edges are successfully fabricated Furthermore, PDPP4T p ‐type semiconductor 1b), after being doped, can function as source‐drain electrodes fabricating field‐effect transistors (FETs) comparable charge mobility significantly sub‐threshold swing value gold electrodes.

Language: Английский

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Dimeric Acceptors Using Different Central Linkers to Manipulate Electronic and Morphological Properties

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

Published: Dec. 1, 2024

Abstract Dimerized acceptors show promise in combining the high performance of small‐molecule non‐fullerene (NFAs) with excellent stability polymer acceptors. The central linking units that connect two acceptor molecules together have a profound impact on dimeric properties and structure‐performance relationships blended thin films. It is seen different linkers significantly affect electronic morphology film. electron‐donating linker elevates absorption coefficient, affords lower bandgap, reduces energy loss, thus better photovoltaic device performance. Better fibrillar can be obtained. best material DY‐EDOT‐based shows power conversion efficiency (PCE) 18.21%, an open‐circuit voltage ( V oc ) 0.924 V, short‐circuit current density J sc 25.20 mA cm −2 , fill factor (FF) 78.19%, which among highest value for dimerized This study reveals fundamental importance determining provides useful strategies developing oligomeric polymeric acceptors, critical simultaneously improving organic solar cells (OSCs).

Language: Английский

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Turning Lemons into Lemonade: One‐Step Synthesized Dual‐Acceptor Organic Photosensitizer to Boost the Photodynamic Therapy

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 23, 2025

Reactive oxygen species (ROS) are crucial in photodynamic therapy (PDT), but their generation is highly dependent on the S-T bandgap (ΔEST), spin-orbit coupling (SOC), intersystem crossing rate (kISC), and also excited triplet-states lifetime (τTriplet) organic photosensitizers (PSs). In contrast to widely reported donor-acceptor-donor (D-A-D) type PSs, D-A-A-D typed PSs seldomly developed for time-consuming complicated synthesis, show great potential enhancing ROS phototheranostics. This work here presents a one-step synthetic procedure of 2DMeTPA-2BT with high yield 47%, which significantly different from previously dual-acceptor cases. 2DMeTPA-BT, display much smaller ΔEST value large SOC constants. Also, (ISC) dynamics indicate that fast kISC, long τTriplet, triplet population observed 2DMeTPA-2BT-based nanoparticles (NPs), contributing superior ROS. NPs then finally utilized imaging-guided PDT vivo tumor inhibition 90%. method offers an efficient way produce via reaction, providing new avenues high-performance

Language: Английский

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Conjugated Side‐Chains Optimize Giant Acceptor Compatibility with Low‐Cost Polymer Donor to Overcome the Cost‐Efficiency‐Stability Trilemma in Polymer Solar Cells

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

Published: May 7, 2025

Abstract Polymer solar cells (PSCs) rely on blends of small‐molecule acceptors (SMAs) and polymer donors, but the thermodynamic relaxation SMAs requires an oligomeric approach to enhance operational stability. However, high‐efficiency devices often depend expensive synthesis costly posing a significant barrier achieving sustainable renewable energy. Here, challenge is addressed through thermodynamically derived compatibility giant with low‐cost donor PTQ10. This achieved by strategically employing conjugated side chains modulate dimerize acceptors, thereby precisely tuning their properties optimize compatibility. Our synthetic route avoids toxic reagents, halogenated solvents, harsh conditions. The dimer (DYBT) incorporating n ‐type linker enhances crystallinity, absorption, intramolecular superexchange coupling compared its p counterpart, achieves device efficiency 19.53%. Considering efficiency, stability, material cost, potential cost per kilowatt for PTQ10:DYBT 0.10 $ kW −1 , while most systems exceed 10 . These findings offer valuable insights cost‐effective well pair donors reduce overall photo‐active layer durable

Language: Английский

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