Insights into the Correlation of Cross-linking Modes with Mechanical Properties for Dynamic Polymeric Networks

Article Chemistry, Multidisciplinary

Highly Strong and Tough Supramolecular Polymer Networks Enabled by Cryptand-Based Host-Guest Recognition

Yuhang Liu et al.

Summary: Cryptand/paraquat host-guest recognition motifs as cross-links can be used to prepare highly strong and tough supramolecular polymer networks with enhanced mechanical properties and abundant dynamic properties.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2023)

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Strong, tough, rapid-recovery, and fatigue-resistant hydrogels made of picot peptide fibres

Bin Xue et al.

Summary: In this study, hydrogels with hierarchical structures and hidden length are reported, which enable the dissipation of mechanical load and improve the mechanical performance of the hydrogels.

NATURE COMMUNICATIONS (2023)

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Mechanically Interlocked Vitrimers

Jun Zhao et al.

Summary: Mechanically interlocked vitrimers (MIVs) are a new class of MINs that combine vitrimer chemistry with mechanically interlocked structures to address challenges. Experimental results demonstrate that MIVs exhibit improved mechanical performance, including Young's modulus, toughness, and damping capacity.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Physical

Highly compressible glass-like supramolecular polymer networks

Zehuan Huang et al.

Summary: This study introduces non-covalent crosslinkers with slow dissociation kinetics, enabling the formation of glass-like supramolecular networks with high compressibility. These materials exhibit high compressive strengths and fast self-recovery, holding promise for high-performance soft materials in various applications such as soft robotics and tissue engineering.

NATURE MATERIALS (2022)

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Article Polymer Science

Supramolecular polymer networks crosslinked by crown ether-based host-guest recognition: dynamic materials with tailored mechanical properties in the bulk

Ruixue Bai et al.

Summary: Supramolecular polymer networks based on host-guest recognition play a crucial role in the development of smart supramolecular materials. This study focuses on the rarely explored bulk SPNs and demonstrates their tough characteristics, dynamic behaviors, and responsiveness to pH. The host-guest recognition acts as a sacrificial bond, enabling notable strength, ductility, and high toughness. The findings deepen the understanding of bulk SPNs and promote the development of supramolecular materials with emergent functions and applications.

POLYMER CHEMISTRY (2022)

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Weldable and closed-loop recyclable monolithic dynamic covalent polymer aerogels

Xinhai Zhang et al.

Summary: This study introduces the concept of dynamic covalent polymer chemistry to produce a new class of aerogels called Dynamic Covalent Polymer Aerogels (DCPAs). These DCPAs exhibit attractive features such as weldability, repairability, and closed-loop recyclability, making them highly desirable for versatile material applications. They also possess high porosity, low density, high toughness, and degradability, overcoming the limitations of traditional aerogels. This research opens up possibilities for the production of a new generation of aerogels with customized features in the field of intelligent and sustainable materials.

NATIONAL SCIENCE REVIEW (2022)

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Article Multidisciplinary Sciences

Acylhydrazine-based reticular hydrogen bonds enable robust, tough, and dynamic supramolecular materials

Yuanxin Deng et al.

Summary: This article introduces a supramolecular cross-linking strategy based on acylhydrazine units, which allows hierarchical cross-linking of poly(disulfides) network and transforms the material from soft to stiff. The resulting material shows significantly increased stiffness while maintaining repairability, malleability, and recyclability. This research is of great importance for future material design.

SCIENCE ADVANCES (2022)

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Article Chemistry, Multidisciplinary

Nanoarchitectonics and applications of artificial molecular machines in smart polymer materials

P. Qiao et al.

Summary: Artificial molecular machines, representing people's control abilities to microscopic molecules in solution, have been one of the most brilliant areas in the past half century. Through coupling these movable molecules with various materials, the motion of molecular machines can be translated and amplified to produce useful work at the macroscopic scale. Among these materials, polymers have the widest applications, and the incorporation of artificial molecular machines into polymer materials is expected to have a significant impact on our lives. This review summarizes the hybrid strategies of polymers with different molecular machines, aiming to provide a research roadmap for related researchers.

MATERIALS TODAY CHEMISTRY (2022)

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Article Multidisciplinary Sciences

Amplification of integrated microscopic motions of high-density [2]rotaxanes in mechanically interlocked networks

Xue Yang et al.

Summary: This study presents mechanically interlocked networks with densely rotaxanated backbones as a model system to understand the integration and amplification of molecular-level motion in macroscopic mechanical properties. The motion of mechanical bonds leads to the expansion of the network, imparting stretchability and puncture resistance to the materials. Similarly, the dissociation and sliding motion contribute to the toughness and damping capacity of the materials. This research provides insights into the relationship between microscopic motion and macroscopic mechanical performance.

NATURE COMMUNICATIONS (2022)

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Review Chemistry, Multidisciplinary

Multicharged cyclodextrin supramolecular assemblies

Zhixue Liu et al.

Summary: Multicharged cyclodextrin supramolecular assemblies have been extensively applied in various fields and show advantages in improving drug-delivery efficiency, enhancing material properties, enabling molecular recognition and imaging, and achieving multistimuli-responsive behavior.

CHEMICAL SOCIETY REVIEWS (2022)

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Article Chemistry, Multidisciplinary

Thermo-responsive topological metamorphosis in covalent-and-supramolecular polymer architectures

Yongming Wang et al.

Summary: In this study, a thermo-responsive macromolecular metamorphosis was achieved by coupling covalent polymers and supramolecular polymers. The researchers successfully transformed brittle materials into tough materials through the topological transformation, demonstrating the potential of supramolecular polymers in designing smart materials.

AGGREGATE (2022)

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Article Chemistry, Multidisciplinary

Degradable Poly(vinyl alcohol)-Based Supramolecular Plastics with High Mechanical Strength in a Watery Environment

Yixuan Li et al.

Summary: The study successfully fabricated PVA-based plastics with excellent degradability and high mechanical strength by complexing VPVA, HA, and Fe3+ to form VPVA-HA-Fe complexes, showing outstanding performance in watery and soil environments.

ADVANCED MATERIALS (2021)

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Article Multidisciplinary Sciences

Strong tough hydrogels via the synergy of freeze-casting and salting out

Mutian Hua et al.

Summary: A strategy combining freeze-casting and salting-out treatments produces poly(vinyl alcohol) hydrogels with a multi-length-scale hierarchical architecture, including micrometre-scale honeycomb-like pore walls and interconnected nanofibril meshes. These hydrogels have properties that compare favorably to other tough hydrogels and even natural tendons.

NATURE (2021)

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Physical networks from entropy-driven non-covalent interactions

Anthony C. Yu et al.

Summary: Studies suggest that entropy-driven physical networks exhibit invariant mechanical properties at elevated temperatures, in contrast to enthalpy-dominated crosslinking networks. By connecting thermodynamics and temperature-dependent viscoelasticity in a mathematical framework, the temperature dependence of crosslinking interactions is explored.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Multidisciplinary

Healable and Recyclable Elastomers with Record-High Mechanical Robustness, Unprecedented Crack Tolerance, and Superhigh Elastic Restorability

Zequan Li et al.

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ADVANCED MATERIALS (2021)

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Review Chemistry, Multidisciplinary

Water compatible supramolecular polymers: recent progress

Weiwei Han et al.

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Synergistic covalent-and-supramolecular polymers connected by [2]pseudorotaxane moieties

Junjun Wan et al.

Summary: The synergistic covalent-and-supramolecular polymers, connected through [2]pseudorotaxane moieties, create a novel class of mechanically adaptive materials by enhancing the synergy between the two polymers.

CHEMICAL COMMUNICATIONS (2021)

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Supramolecular polymers fabricated by orthogonal self-assembly based on multiple hydrogen bonding and macrocyclic host-guest interactions

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CHINESE CHEMICAL LETTERS (2020)

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Toughening a Self-Healable Supramolecular Polymer by Ionic Cluster-Enhanced Iron-Carboxylate Complexes

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An Ultrastrong and Highly Stretchable Polyurethane Elastomer Enabled by a Zipper-Like Ring-Sliding Effect

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Emissive Metallacycle-Crosslinked Supramolecular Networks with Tunable Crosslinking Densities for Bacterial Imaging and Killing

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Synergistic Covalent and Supramolecular Polymers for Mechanically Robust but Dynamic Materials

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Functional Supramolecular Polymeric Networks: The Marriage of Covalent Polymers and Macrocycle-Based Host-Guest Interactions

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Coordination-Driven Self-Assembly in Polymer-Inorganic Hybrid Materials

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Tough and Multi-Recyclable Cross-Linked Supramolecular Polyureas via Incorporating Noncovalent Bonds into Main-Chains

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Fabrication of Tough and Stretchable Hybrid Double-Network Elastomers Using Ionic Dissociation of Polyelectrolyte in Nonaqueous Media

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Tailored silyl ether monomers enable backbone-degradable polynorbornene-based linear, bottlebrush and star copolymers through ROMP

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Insights into the Correlation of Cross-linking Modes with Mechanical Properties for Dynamic Polymeric Networks

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