Transparent, Mechanically Strong, Extremely Tough, Self‐Recoverable, Healable Supramolecular Elastomers Facilely Fabricated via Dynamic Hard Domains Design for Multifunctional Applications

Advanced Functional Materials, Journal Year: 2019, Volume and Issue: 30(3)

Published: Oct. 22, 2019

Abstract The design and synthesis of supramolecular self‐healing polymers with high healing efficiency excellent integrated mechanical properties is challenging due to conflicting attributes dynamic properties. Herein, this study introduces a concept, that is, “dynamic hard domains,” balance performance, strength, elastic recovery, at the same time obtain extreme toughness. essential features domains include: (i) noncrystallized loose structure, (ii) low binding energy mobility, (iii) sequential dissociation rapid rearrangement. Based on strategy, simple one‐step polycondensation route reported synthesize transparent polyurethane‐urea elastomer (PPGTD‐IDA), which successfully combines decent toughness, outstanding notch‐sensitiveness, self‐recoverability, room‐temperature self‐healing. Upon rupture, PPGTD‐IDA completely restores within 48 h. Furthermore, results demonstrate repeatable prominent antiaging healability. Taking advantages merits PPGTD‐IDA, it can be utilized for fabricating impact‐resistant materials protection aluminum alloys as well stretchable conductors, exhibits unique characteristics such stable conductivity during stretching (even after or notch), automatic elimination notch stretching/releasing cycles.

Language: Английский

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Disulfide-Mediated Reversible Polymerization toward Intrinsically Dynamic Smart Materials

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(5), P. 2022 - 2033

Published: Jan. 6, 2022

The development of a dynamic chemistry toolbox to endow materials behavior has been key the rational design future smart materials. rise supramolecular and covalent offers many approaches construction polymers that can adapt, respond, repair, recycle. Within this toolbox, building blocks based on 1,2-dithiolanes have become an important scaffold, featuring their reversible polymerization mediated by disulfide bonds, which enables unique class at intersection adaptable networks. This Perspective aims explore as versatile structural unit for summarizing state art well providing overview fundamental challenges involved in research area its potential directions.

Language: Английский

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100th Anniversary of Macromolecular Science Viewpoint: Toward Catalytic Chemical Recycling of Waste (and Future) Plastics

ACS Macro Letters, Journal Year: 2020, Volume and Issue: 9(11), P. 1494 - 1506

Published: Oct. 12, 2020

The current global materials economy has long been inefficient due to unproductive reuse and recycling efforts. Within the wider portfolio, plastics have revolutionary many industries but they treated as disposable commodities leading their increasing accumulation in environment waste. field of chemistry had significant bearing ushering industry will undoubtedly a hand transforming it become more sustainable. Existing approaches include development synthetic biodegradable turning renewable raw order produce similar our petrol-based or create new polymers. Additionally, chemists are confronting environmental crisis by developing alternative methods deal with legacy plastic Important emergent technologies, such catalytic chemical upcycling, potential alleviate numerous issues related future refuse and, doing so, help pivot from linearity circularity.

Language: Английский

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

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 59(13), P. 5278 - 5283

Published: Feb. 25, 2020

Supramolecular polymers that can heal themselves automatically usually exhibit weakness in mechanical toughness and stretchability. Here we exploit a toughening strategy for dynamic dry supramolecular network by introducing ionic cluster-enhanced iron-carboxylate complexes. The resulting simultaneous exhibits tough strength, high stretchability, self-healing ability, processability at room temperature. excellent performance of these distinct is attributed to the hierarchical existence four types combinations high-density network, including covalent disulfide bonds, noncovalent H-bonds, complexes clustering interactions. extremely facile preparation method this polymer offers prospects high-performance low-cost material among others coatings wearable devices.

Language: Английский

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Dynamic and reconfigurable materials from reversible network interactions

Nature Reviews Materials, Journal Year: 2022, Volume and Issue: 7(7), P. 541 - 556

Published: Jan. 31, 2022

Language: Английский

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Dual closed-loop chemical recycling of synthetic polymers by intrinsically reconfigurable poly(disulfides)

Matter, Journal Year: 2021, Volume and Issue: 4(4), P. 1352 - 1364

Published: Feb. 6, 2021

Language: Английский

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Architecture-Controlled Ring-Opening Polymerization for Dynamic Covalent Poly(disulfide)s

Journal of the American Chemical Society, Journal Year: 2019, Volume and Issue: 141(43), P. 17075 - 17080

Published: Oct. 11, 2019

A strategy is reported for controlling the architecture of poly(disulfide)s by ring-opening polymerization. Aryl thiol initiators shift ring–chain equilibrium to yield cyclic polymers, while alkyl thiols favor linear ones. Control over polymerization enables synthesis large polymers (630 kDa) and catalytic depolymerization recycle monomers. This work provides a new avenue create dynamic covalent with controlled geometry length, allowing better characterization structure–property relationships expand their materials potentials.

Language: Английский

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

Advanced Materials, Journal Year: 2020, Volume and Issue: 32(23)

Published: April 30, 2020

Elastomers with excellent mechanical properties are in substantial demand for various applications, but there is always a tradeoff between their strength and stretchability. For example, partially replacing strong covalent crosslinking by weak sacrificial bonds can enhance the stretchability also usually decreases strength. To surmount this inherent tradeoff, supramolecular strategy of introducing zipper-like sliding-ring mechanism hydrogen-bond-crosslinked polyurethane network proposed. A very small amount (0.5 mol%) an external additive (pseudo[2]rotaxane crosslinker) dramatically increase both elongation nearly one order magnitude. Based on investigation relationship molecular structure properties, enhancement attributable to unique molecular-level ring-sliding motion, which efficiently dissipates work solvent-free network. This research not only provides distinct general construction high-performance elastomers paves way practical application artificial machines toward networks.

Language: Английский

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Tannic acid–thioctic acid hydrogel: a novel injectable supramolecular adhesive gel for wound healing

Green Chemistry, Journal Year: 2021, Volume and Issue: 23(4), P. 1794 - 1804

Published: Jan. 1, 2021

Thiyl radical–polyphenol Michael addition was utilized to prepare tannic acid–thioctic acid (TATA) hydrogel under mild condition. It also found that this could be used as wound adhesive with good biocompatibility.

Language: Английский

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Adaptive Ionogel Paint from Room‐Temperature Autonomous Polymerization of α‐Thioctic Acid for Stretchable and Healable Electronics

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(24)

Published: April 8, 2021

Abstract Development of a universal stretchable ionic conductor coating on insulating substrates, irrespective surface chemistry and substrate shapes, is immense interest for compliant integrative large‐area electronics but has proved to be extremely challenging. Existing methods relying either the concurrent deposition polymerizing precursors or divided formulation painting processes both suffer from several limitations in terms adhesion, dehydration, processability, pre‐treatment. Here an ionogel paint that readily prepared concentration‐induced autonomous ring‐opening polymerization natural small molecule—α‐thioctic acid (TA) at ambient conditions reported. The presence liquid prevents polyTA further depolymerization via forming COOH···OS hydrogen bonds, resulting ultra‐stretchable ionogels with widely tunable mechanical conductive properties, self‐healability, as well tissue‐like strain adaptability. Moreover, owing its adhesion adjustable rheology, can directly coated diverse substrates arbitrary shapes (including porous materials, 3D printed frames, elastic threads) render them conductivity. Applications ionogel‐coated skin‐like highly sensitive durable large‐strain sensors are demonstrated, suggesting paint's great potential emerging soft electronics.

Language: Английский

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