Diverse reactivity of maleimides in polymer science and beyond DOI Creative Commons
Bruce E. Kirkpatrick, Kristi S. Anseth, Tayler S. Hebner

et al.

Polymer International, Journal Year: 2024, Volume and Issue: 74(4), P. 296 - 306

Published: Nov. 5, 2024

Abstract Maleimides are remarkably versatile functional groups, capable of participating in homo‐ and copolymerizations, Diels–Alder (photo)cycloadditions, Michael additions, other reactions. Their reactivity has afforded materials ranging from polyimides with high upper service temperatures to hydrogels for regenerative medicine applications. Moreover, maleimides have proven be an enabling chemistry pharmaceutical development bioconjugation via straightforward modification cysteine residues. To exert spatiotemporal control over reactions maleimides, multiple approaches been developed photocage nucleophiles, dienes, dipoles. Additionally, further substitution the maleimide alkene (e.g. monohalo‐, dihalo‐, thio‐, amino‐ methyl‐maleimides, among substituents) confers tunable dynamicity, as well responsive mechanical optical properties. In this mini‐review, we highlight diverse functionality underscoring their notable impact polymer science. This moiety related heterocycles will play important role future innovations chemistry, biomedical, research. © 2024 The Author(s). Polymer International published by John Wiley & Sons Ltd on behalf Society Chemical Industry.

Language: Английский

Advanced flexible self-healing triboelectric nanogenerators for applications in complex environments DOI
Dake Xu, Zhimin Jing, Hong Wang

et al.

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

Published: Jan. 1, 2025

With the advent of smart era, demand for clean energy is rising, and flexible triboelectric nanogenerators (F-TENGs) based on elastomers have garnered significant attention. Based principles electrostatic induction coupling, F-TENGs can convert mechanical motion into electrical are widely utilized in wearable devices blue energy. offer a simple design, ease manufacturing, usage scenarios. However, several weaknesses still limit their development. For example, F-TENG materials cannot recover from fatigue damage prone to output performance degradation under frequent friction or complex external conditions, leading failure. To address these issues, researchers explored use self-healable polymer-based layers electrodes. This review will provide detailed summary key scientific technological challenges faced by harsh environments, including ambient, high low temperatures, humidity, strong acids bases. Furthermore, research progress addressing issues future development also be presented explored. paper aims valuable insights guidance in-depth broad applications TENGs.

Language: Английский

Citations

1
Bisphenol‐Modified Ternary Liquid Crystal Polyarylates with Low Dielectric Loss at High Frequencies DOI Open Access
Hong Chen, Zhibo Huang,

Qingyan Fan

et al.

Macromolecular Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Thermotropic liquid crystalline polyarylates (TLCPs) with low dielectric loss at high frequencies have garnered significant attention due to their exceptional properties and communication application. To investigate the influence of molecular structures on constant factor TLCPs, 4,4′‐dihydroxy diphenyl sulfone (SDP), ether (ODP), ketone (DHBP), sulfide (TDP) are introduced copolymerize 6‐hydroxy‐2‐naphthoic acid (HNA) terephthalic (TA) by one‐pot melt polycondensation, which defined as TLCP‐I, TLCP‐II, TLCP‐III, TLCP‐IV, respectively. All prepared ternary TLCPs exhibit a nematic LC state between 300 350 °C, crystallinity modified is reduced certain extent introducing bisphenol moieties compared referenced polyarylate (TLCP‐0) from 4‐hydroxybenzoic (HBA) HNA. Meanwhile, consequent good thermal stability, maximum weight rate temperature exceeds 500 °C. Furthermore, initial storage modulus TLCP‐IV films room 1.2, 0.85, 1.5 GPa, respectively, showing tensile strength. Most importantly, factors much less than 0.01 in range 1–10 4 kHz, thus suggesting an ideal low‐dielectric‐material candidate.

Language: Английский

Citations

0
Thermally Stable and Shape‐Adaptive Triboelectric Nanogenerators Based on Liquid Electrolytes with Low Vapor Pressure DOI Creative Commons
Teklebrahan Gebrekrstos Weldemhret, Nebiyou Tadesse Debele,

Sofonias Nursefa Kedir

et al.

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

Published: April 22, 2025

Abstract Aqueous solution‐based liquid electrode triboelectric nanogenerators (TENGs) have attracted considerable interest in recent years due to their exceptional stretchability, deformability, and inherent shape‐adaptability. However, previous aqueous TENGs face challenges related drying, which may lead operational failures. In this study, a low‐vapor pressure (LVPL) TENG (LVPL‐TENG) is presented that uses branched polyethyleneimine (bPEI) or deep eutectic solvent, choline chloride/glycerol (ChCl:Gly), increase the stability of at high temperatures. The LVPL‐TENGs achieve power density ≈6.2 4.0 w m −2 when using bPEI ChCl:Gly as electrodes, respectively. Furthermore, these devices remarkable energy harvesting capabilities while being stretched up 400%. Importantly, maintain constant electrical output after stored 100 °C for 24 h. Utilizing simple single‐electrode design, can efficiently harvest various small physiological movements, i.e., finger bending, grasping coffee cup, clicking computer mouse. Additionally, potential function self‐powered tactile sensors detect touch any material object, indicating promising applications realm human‐machine interaction. This study opens new avenues deploying stretchable shape‐adaptable operating

Language: Английский

Citations

0
2D Ti3C2Tx-MXene and its superstructures as dual-function electrodes for triboelectric nanogenerators for self-powered electronics DOI Creative Commons
Shoaib Anwer, Muhammad Umair Khan, Anas Alazzam

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157985 - 157985

Published: Nov. 1, 2024

Language: Английский

Citations

2
Diverse reactivity of maleimides in polymer science and beyond DOI Creative Commons
Bruce E. Kirkpatrick, Kristi S. Anseth, Tayler S. Hebner

et al.

Polymer International, Journal Year: 2024, Volume and Issue: 74(4), P. 296 - 306

Published: Nov. 5, 2024

Abstract Maleimides are remarkably versatile functional groups, capable of participating in homo‐ and copolymerizations, Diels–Alder (photo)cycloadditions, Michael additions, other reactions. Their reactivity has afforded materials ranging from polyimides with high upper service temperatures to hydrogels for regenerative medicine applications. Moreover, maleimides have proven be an enabling chemistry pharmaceutical development bioconjugation via straightforward modification cysteine residues. To exert spatiotemporal control over reactions maleimides, multiple approaches been developed photocage nucleophiles, dienes, dipoles. Additionally, further substitution the maleimide alkene (e.g. monohalo‐, dihalo‐, thio‐, amino‐ methyl‐maleimides, among substituents) confers tunable dynamicity, as well responsive mechanical optical properties. In this mini‐review, we highlight diverse functionality underscoring their notable impact polymer science. This moiety related heterocycles will play important role future innovations chemistry, biomedical, research. © 2024 The Author(s). Polymer International published by John Wiley & Sons Ltd on behalf Society Chemical Industry.

Language: Английский

Citations

1