Side Chain Engineering toward Chemical Doping of Conjugated Polymers DOI
Ze‐Fan Yao, Jie‐Yu Wang, Jian Pei

et al.

Accounts of Chemical Research, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

ConspectusSolution-processable conjugated polymers are typically composed of two distinct structural components: rigid backbones and flexible side chains, each with unique roles properties. The backbone forms the core framework polymer is directly responsible for its optoelectronic properties, such as light absorption, emission, charge transport. Meanwhile, can undergo chemical doping, where molecular dopants introduce carriers to modulate carrier density electrical conductivity. Therefore, critical determinant resulting performance. However, on other hand, originally introduced improve solution processability, were long considered chemically inert doping reaction. Recent advances have shown that role chains more than just improving solubility, demonstrating significant impact packing backbone, film morphology, electronic properties polymers. Side chain engineering has become an essential design strategy creating high-performance in various applications.In this Account, we aim emphasize importance toward controllable polymers, allows us tune packing, efficiency, thereby enhancing transport Specifically, length, branching structures, functional groups be systematically varied control miscibility, interactions dopants. For example, longer or branched solubility but may disrupt π-π stacking between backbones, reducing efficiency polymer. Shorter linear enhance coupling, though at expense reduced solubility. process particularly noteworthy. Although reactions, their influences all three steps process: mixing, ionization, carrierization. affect spatial distribution during local environment facilitate transfer influence dissociation ion pairs into free generation. Functional polar groups, dopant-polymer compatibility, while those dielectric weaken pairing promote interplay achieving optimal performance applications organic photovoltaics, field-effect transistors, thermoelectrics. Rational provides a powerful tool address these challenges morphology control, transport, bringing opportunities advanced tailored specific applications.

Language: Английский

Orientation of Conjugated Polymers in Single Crystals: Is It Really Unusual for the Polydiacetylene Backbone to Be Aligned Almost Perpendicular to the Hydrogen Bond Network? DOI Creative Commons
Pierre Baillargeon, Mathieu Desnoyers-Barbeau, Marc Pouliot

et al.

Solids, Journal Year: 2025, Volume and Issue: 6(1), P. 12 - 12

Published: March 9, 2025

We report the topochemical solid-state polymerization of different series symmetrical diacetylenes (DAs) and asymmetrical chlorodiacetylenes (ClDAs), whose members differ in their alkyl spacing lengths one to four methylene units (n = 1, 2, 3, 4) between diyne carbamate functionalities. Structure determination by single-crystal X-Ray diffraction (SCXRD) confirms that each these series, at least 50% analyses show monomers with a particular stacking pattern presenting two potential directions simultaneously. An organization crystalline polydiacetylene (PDA) an oblique chain orientation respect network cooperatives hydrogen bonds is rather rare literature (only cases), here we have obtained more examples this type structural motif (supported SCXRD analysis polymer). Orientation control essential optimize performance conjugated polymers, spacer length modification strategy presents way achieve case PDA.

Language: Английский

Citations

0
Contorted acene ribbons for stable and ultrasensitive neural probes DOI Creative Commons
Shayan Louie, Qifeng Jiang, D. Wiśniewski

et al.

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

Citations

0
Side Chain Engineering toward Chemical Doping of Conjugated Polymers DOI
Ze‐Fan Yao, Jie‐Yu Wang, Jian Pei

et al.

Accounts of Chemical Research, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

ConspectusSolution-processable conjugated polymers are typically composed of two distinct structural components: rigid backbones and flexible side chains, each with unique roles properties. The backbone forms the core framework polymer is directly responsible for its optoelectronic properties, such as light absorption, emission, charge transport. Meanwhile, can undergo chemical doping, where molecular dopants introduce carriers to modulate carrier density electrical conductivity. Therefore, critical determinant resulting performance. However, on other hand, originally introduced improve solution processability, were long considered chemically inert doping reaction. Recent advances have shown that role chains more than just improving solubility, demonstrating significant impact packing backbone, film morphology, electronic properties polymers. Side chain engineering has become an essential design strategy creating high-performance in various applications.In this Account, we aim emphasize importance toward controllable polymers, allows us tune packing, efficiency, thereby enhancing transport Specifically, length, branching structures, functional groups be systematically varied control miscibility, interactions dopants. For example, longer or branched solubility but may disrupt π-π stacking between backbones, reducing efficiency polymer. Shorter linear enhance coupling, though at expense reduced solubility. process particularly noteworthy. Although reactions, their influences all three steps process: mixing, ionization, carrierization. affect spatial distribution during local environment facilitate transfer influence dissociation ion pairs into free generation. Functional polar groups, dopant-polymer compatibility, while those dielectric weaken pairing promote interplay achieving optimal performance applications organic photovoltaics, field-effect transistors, thermoelectrics. Rational provides a powerful tool address these challenges morphology control, transport, bringing opportunities advanced tailored specific applications.

Language: Английский

Citations

0