Metal Ion-Directed Functional Metal–Phenolic Materials

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(13), P. 11432 - 11473

Published: May 10, 2022

Metal ions are ubiquitous in nature and play significant roles assembling functional materials fields spanning chemistry, biology, science. Metal-phenolic assembled from phenolic components the presence of metal through formation metal-organic complexes. Alkali, alkali-earth, transition, noble as well metalloids interacting with building blocks have been widely exploited to generate diverse hybrid materials. Despite extensive studies on synthesis metal-phenolic materials, a comprehensive summary how guide assembly compounds is lacking. A fundamental understanding engineering will facilitate specific properties. In this review, we focus diversity function material emerging applications. Specifically, discuss range underlying interactions, including (i) cation-π, (ii) coordination, (iii) redox, (iv) dynamic covalent highlight wide properties resulting these interactions. Applications (e.g., biological, catalytic, environmental) perspectives also highlighted.

Language: Английский

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Bioinspired Injectable Self-Healing Hydrogel Sealant with Fault-Tolerant and Repeated Thermo-Responsive Adhesion for Sutureless Post-Wound-Closure and Wound Healing

Nano-Micro Letters, Journal Year: 2022, Volume and Issue: 14(1)

Published: Sept. 13, 2022

Hydrogels with multifunctionalities, including sufficient bonding strength, injectability and self-healing capacity, responsive-adhesive ability, fault-tolerant repeated tissue adhesion, are urgently demanded for invasive wound closure healing. Motivated by the adhesive mechanism of mussel brown algae, bioinspired dynamic bonds cross-linked multifunctional hydrogel is designed based on sodium alginate (SA), gelatin (GT) protocatechualdehyde, ferric ions added, sutureless post-wound-closure. The through Schiff base bond, catechol-Fe coordinate bond strong interaction between GT temperature-dependent phase transition SA, endows resulting mechanical strength efficient closure, reopened wounds. Moreover, properties endowed mispositioning to be removed/repositioned, which conducive adhesion adhesives during surgery. Besides, hydrogels present good biocompatibility, near-infrared-assisted photothermal antibacterial activity, antioxidation thermo-responsive reversible hemostatic effect. in vivo incision evaluation demonstrated their capability promote post-wound-closure healing incisions, indicating that developed dressing could serve as versatile sealant.

Language: Английский

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Tannic Acid–Silver Dual Catalysis Induced Rapid Polymerization of Conductive Hydrogel Sensors with Excellent Stretchability, Self-Adhesion, and Strain-Sensitivity Properties

ACS Applied Materials & Interfaces, Journal Year: 2020, Volume and Issue: 12(50), P. 56509 - 56521

Published: Dec. 3, 2020

The application of conductive hydrogels in intelligent biomimetic electronics is a hot topic recent years, but it still great challenge to develop the through rapid fabrication process at ambient temperature. In this work, versatile poly(acrylamide) @cellulose nanocrystal/tannic acid–silver nanocomposite (NC) hydrogel integrated with excellent stretchability, repeatable self-adhesion, high strain sensitivity, and antibacterial property, was synthesized via radical polymerization within 30 s Notably, realized tannic (TA-Ag) mediated dynamic catalysis system that capable activating ammonium persulfate then initiated free-radical acrylamide monomer. Benefiting from incorporation TA-Ag metal ion nanocomplexes cellulose nanocrystals, which acted as connecting bridges by hydrogen bonds efficiently dissipate energy, obtained NC exhibited prominent tensile (up 4000%), flexibility, self-recovery, antifatigue properties. addition, showed adhesiveness different substrates (e.g., glass, wood, bone, metal, skin) significant properties, were merits for be assembled into flexible epidermal sensor long-term human–machine interfacial contact without concerns about use external adhesive tapes bacterial breeding. Moreover, remarkable conductivity (σ ∼ 5.6 ms cm–1) sensitivity (gauge factor = 1.02) allowed sensors monitor various human motions real time, including huge movement deformations wrist, elbow, neck, shoulder) subtle motions. It envisioned work would provide promising strategy preparation electronic skin, biomedical devices, soft robotics.

Language: Английский

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Lignin-based carbon fibers: Formation, modification and potential applications

Green Energy & Environment, Journal Year: 2021, Volume and Issue: 7(4), P. 578 - 605

Published: April 8, 2021

As an aromatic polymer in nature, lignin has recently attracted gross attention because of its advantages high carbon content, low cost and bio-renewability. However, most is directly burnt for power generation to satisfy the energy demand pulp mills. a result, only handful isolated used as raw material. Thus, increasing value addition on expand scope applications currently challenge demanding immediate attention. Many efforts have been made valorization lignin, including preparation precursors fibers. complex structure diversity significantly restrict spinnability lignin. In this review, we provide elaborate knowledge lignin-based fibers ranging from relationships among chemical structures, formation conditions properties fibers, their potential applications. Specifically, control procedures different spinning methods melt spinning, solution electrospinning, together with stabilization carbonization are deeply discussed overall understanding towards We also offer perspectives challenges new directions future development

Language: Английский

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Combined Catalysis for Engineering Bioinspired, Lignin-Based, Long-Lasting, Adhesive, Self-Mending, Antimicrobial Hydrogels

ACS Nano, Journal Year: 2020, Volume and Issue: 14(12), P. 17004 - 17017

Published: Dec. 11, 2020

The engineering of multifunctional biomaterials using a facile sustainable methodology that follows the principles green chemistry is still largely unexplored but would be very beneficial to world. Here, employment catalytic reactions in combination with biomass-derived starting materials design promote development eco-friendly technologies and materials. Herein, we disclose two cycles (combined catalysis) comprising oxidative decarboxylation quinone-catechol redox catalysis for lignin-based antimicrobial hydrogels. bioinspired mimics catechol employed by marine mussels nature. resultant hydrogels (1) are robust elastic, (2) have strong activity, (3) adhesive skin tissue various other surfaces, (4) able self-mend. A systematic characterization was carried out fully elucidate understand efficient strategy subsequent Electron paramagnetic resonance analysis confirmed long-lasting environment within hydrogel system. Initial vitro biocompatibility studies demonstrated low toxicity This proof-of-concept could developed into an important technological platform eco-friendly, their use biomedical flexible electronic applications.

Language: Английский

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High-strength hydrogels: Fabrication, reinforcement mechanisms, and applications

Nano Research, Journal Year: 2023, Volume and Issue: 16(2), P. 3475 - 3515

Published: Jan. 3, 2023

Language: Английский

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Ultrafast Fabrication of Lignin-Encapsulated Silica Nanoparticles Reinforced Conductive Hydrogels with High Elasticity and Self-Adhesion for Strain Sensors

Chemistry of Materials, Journal Year: 2022, Volume and Issue: 34(11), P. 5258 - 5272

Published: June 2, 2022

Conductive hydrogels are receiving considerable attention because of their important applications, such as flexible wearable electronic, human-machine interfaces, and smart/soft robotics. However, the insufficient mechanical performance inferior adhesive capability severely hinder potential applications in an emerging field. Herein, a highly elastic conductive hydrogel that integrated robustness, self-adhesiveness, UV-filtering, stable electrical was achieved by synergistic effect sulfonated lignin-coated silica nanoparticles (LSNs), polyacrylamide (PAM) chains, ferric ions (Fe3+). In detail, dynamic redox reaction constructed between catechol groups LSNs Fe3+, which could promote rapid gelation acrylamide (AM) monomers 60 s. The optimized containing 1.5 wt % junction points exhibited excellent elasticity (<15% hysteresis ratio), high stretchability (∼1100% elongation), improved robustness (tensile compressive strength ∼180 kPa ∼480 kPa). Notably, abundant endowed with long-lasting robust self-adhesion, enabling seamless adhesion to human skin. Meanwhile, also provided exceptional UV-blocking (∼95.1%) for hydrogels. combined advantages were manifested sensors high-fidelity detection various deformations over wide range strain (10–200%) good repeatability stability. We believed designed may become promising candidate material future electronics long-term movements monitoring.

Language: Английский

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Lignin and cellulose derivatives-induced hydrogel with asymmetrical adhesion, strength, and electriferous properties for wearable bioelectrodes and self-powered sensors

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 414, P. 128903 - 128903

Published: Feb. 15, 2021

Language: Английский

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Bioadhesive and conductive hydrogel-integrated brain-machine interfaces for conformal and immune-evasive contact with brain tissue

Matter, Journal Year: 2022, Volume and Issue: 5(4), P. 1204 - 1223

Published: Jan. 31, 2022

Language: Английский

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Bioinspired adhesive and tumor microenvironment responsive nanoMOFs assembled 3D-printed scaffold for anti-tumor therapy and bone regeneration

Nano Today, Journal Year: 2021, Volume and Issue: 39, P. 101182 - 101182

Published: May 15, 2021

Language: Английский

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