Polymer, Journal Year: 2024, Volume and Issue: 303, P. 127116 - 127116
Published: May 1, 2024
Language: Английский
Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)
Published: Dec. 9, 2022
Abstract Closed-loop chemical recycling provides a solution to the end-of-use problem of synthetic polymers. However, it remains major challenge design dynamic bonds, capable effective bonding and reversible cleaving, for preparing chemically recyclable cross-linked Herein, we report maleic acid tertiary amide bond based upon amidation reaction between anhydrides secondary amines. This allows construction polymer networks with tailorable robust mechanical properties, covering strong elastomers tensile strength 22.3 MPa rigid plastics yield 38.3 MPa. Impressively, these polymeric materials can be completely depolymerized in an acidic aqueous at ambient temperature, leading efficient monomer recovery >94% separation yields. Meanwhile, recovered monomers used remanufacture without losing their original performance. work unveils general approach tunable performance closed-loop recyclability, which will open new avenue sustainable materials.
Language: Английский
Citations
104
Advanced Science, Journal Year: 2022, Volume and Issue: 9(28)
Published: Aug. 9, 2022
Developing high-performance and reusable adhesives from renewable feedstocks is of significance to sustainable development, yet it still remains a formidable task. Herein, castor oil, melevodopa, iron ions are used as building blocks construct novel bio-based supramolecular adhesive (BSA) with outstanding adhesion performances. It prepared through partial coordination between melevodopa functionalized oil Fe3+ ions. Noncovalent interactions adherends the catechol unit contribute reinforcing adhesion, metal-ligand utilized strengthen cohesion. By combining strong tough cohesion, BSA achieves an strength 14.6 MPa at ambient temperature, record-high value among reported well best knowledge. also outperforms those cryogenic realizing another 9.5 -196 °C. In addition, displays excellent multi-reusability more than 87% original remaining even after reuse for ten times. highly anticipated that this line research will provide new insight into designing performances multi-reusability.
Language: Английский
Citations
88
Advanced Materials, Journal Year: 2023, Volume and Issue: 35(39)
Published: March 12, 2023
Abstract Polyimides (PIs) are widely used in circuit components, electrical insulators, and power systems modern electronic devices large appliances. Electrical/mechanical damage of materials important factors that threaten reliability service lifetime. Dynamic (self‐healable, recyclable degradable) PIs, a promising class successfully improve electrical/mechanical properties after damage, anticipated to solve this issue. The viewpoints perspectives on the status future trends dynamic PI based few existing documents shared. main forms dielectric application process first introduced, initial strategies schemes these problems proposed. Fundamentally, bottleneck issues faced by development PIs indicated, relationship between various universality method is evaluated. potential mechanism deal with highlighted several feasible prospective address discussed. This study concluded presenting short outlook improvements systems, challenges, solutions insulation. summary theory practice should encourage policy favoring energy conservation environmental protection promoting sustainability.
Language: Английский
Citations
66
Aggregate, Journal Year: 2023, Volume and Issue: 4(4)
Published: March 7, 2023
Abstract Functional materials with circularly polarized luminescence (CPL) have attracted tremendous attention due to their promising applications in three‐dimensional displays, chiral recognition and catalysis, photoelectronic devices, contrast imaging, information encryption, other fields. Among various CPL‐active materials, polymeric systems aggregation‐induced emission (AIE) emerged as excellent candidates because of efficient aggregate‐state fluorescence, large solid‐state dissymmetry factor, processibility, diversified self‐assembly behaviors, readily switchable CPL properties. This review summarizes discusses the recent progress well future perspective diverse AIE polymer CPL, including covalent polymers, supramolecular AIEgen/polymer composites CPL. According location or introduction method AIEgen structures, this further divides polymers into three categories, main chains, side clusterization‐triggered emission. are discussed based on driving force for formation host–guest interactions, metal coordination, non‐covalent interactions. Moreover, examples construction by physically mixing AIEgens (supra)polymers also presented. is anticipated provide readers an overall view design strategies facilitate research development advanced applications.
Language: Английский
Citations
62
Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1304, P. 137665 - 137665
Published: Feb. 3, 2024
Language: Английский
Citations
32
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Feb. 29, 2024
Abstract Structurally colored composite films, composed of orderly arranged colloids in polymeric matrix, are emerging flexible optical materials, but their production is bottlenecked by time-consuming procedures and limited material choices. Here, we present a mild approach to producing large-scale structurally films shearing supramolecular composites polymers with interactions. Leveraging dynamic connection dissociation interactions, force stretches the polymer chains drags migrate directionally within matrix reduced viscous resistance. We show that meter-scale iridescence color can be produced several minutes at room temperature. Significantly, tunability diversity interactions allow this extendable various commonly-used polymers. This study overcomes traditional limitations manufacturing method opens an avenue for mildly ordered commonly-available materials via strategies.
Language: Английский
Citations
23
Progress in Materials Science, Journal Year: 2024, Volume and Issue: 143, P. 101248 - 101248
Published: Feb. 11, 2024
Language: Английский
Citations
19
Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(13), P. 6019 - 6027
Published: March 27, 2022
Natural systems transfer chiral information across multiple length scales through dynamic supramolecular interaction to accomplish various functions. Inspired by nature, many exquisite artificial have been developed, in which controlling the chirality holds key completing specific tasks. However, achieve precise and non-invasive control modulation of these remains challenging. As a stimulus, light can be used remotely with high spatiotemporal precision. In contrast common molecular switches, synthetic motor act as multistate chiroptical switch unidirectional rotation, offering major potential regulate more complex Here, we present light-driven motor-based polymer, intrinsic is transferred nanofibers, rotation motors governs morphology polymer. The resulting polymer also exhibits light-controlled aggregation-induced emission. These findings photochemically tunable system water pave way for developing motor-driven materials.
Language: Английский
Citations
70
Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(22), P. 9775 - 9784
Published: May 27, 2022
Chirality delivers substantial value to the field of supramolecular polymers, not only serving as a probe monitor dynamic assembly process but providing access chiroptical materials. The current study demonstrates that, for donor-acceptor copolymers, their comonomer organization modes can be greatly influenced by stereocommunication at molecular level. enantiopure N-[(1R or 1S)-phenylethyl]benzamides are incorporated into two structurally similar comonomers, locating between π-aromatic diethynylacene core and alkyl chain peripheries. Parallel arrangement stereogenic methyl units brings steric hindrance homochiral which is relieved heterochiral comonomers due adoption staggered arrangement. It consequently steers randomly mixed copolymers within nanofibers. In comparison, counterparts form nanoparticles in an alternate manner. variation gives rise distinct energy transfer efficiency Overall, elaborate manipulation centers structures exerts significant impacts on characteristics could useful chiral sensing, recognition, optoelectronic applications.
Language: Английский
Citations
68
Smart Molecules, Journal Year: 2023, Volume and Issue: 1(2)
Published: Sept. 1, 2023
Abstract Dynamic chemistry refers to a type of fundamental science that involves precise construction or regulation reactional, motional, constitutional dynamics chemical systems. Under the meticulous design chemists, nanoscopic dynamics, either molecular supramolecular, are managed scale up macroscopic dynamic properties. For example, stimuli‐induced conformational configurational changes polymer skeletons result in unexpected functions polymers, such as self‐healing and shape‐shifting behaviors. This review focuses on how microscopic these components initiate reversible deformation corresponding materials upon external stimuli. The discussed terms subtle design, mechanisms, critical roles building materials. Furthermore, this puts forward challenges opportunities for field polymers both aspects material fabrication. We hope can provide new inspiration development particular research field.
Language: Английский
Citations
30