Recent advances in conductive hydrogels: classifications, properties, and applications

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 52(2), P. 473 - 509

Published: Dec. 9, 2022

Hydrogel-based conductive materials for smart wearable devices have attracted increasing attention due to their excellent flexibility, versatility, and outstanding biocompatibility. This review presents the recent advances in multifunctional hydrogels electronic devices. First, with different components are discussed, including pure single network based on polymers, additional additives (i.e., nanoparticles, nanowires, nanosheets), double additives. Second, a variety of functionalities, self-healing, super toughness, self-growing, adhesive, anti-swelling, antibacterial, structural color, hydrophobic, anti-freezing, shape memory external stimulus responsiveness introduced detail. Third, applications flexible illustrated strain sensors, supercapacitors, touch panels, triboelectric nanogenerator, bioelectronic devices, robot). Next, current challenges facing summarized. Finally, an imaginative but reasonable outlook is given, which aims drive further development future.

Language: Английский

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Fast and programmable locomotion of hydrogel-metal hybrids under light and magnetic fields

Science Robotics, Journal Year: 2020, Volume and Issue: 5(49)

Published: Dec. 9, 2020

Reconfiguring and programming the action of a magnetically driven robot using light.

Language: Английский

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Ionic Conductive Organohydrogels with Dynamic Pattern Behavior and Multi‐Environmental Stability

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

Published: April 2, 2021

Abstract Multi‐environmental tolerant hydrogels have received significant attention and are promising for application as smart materials in multiple environments (e.g., water, oil, freezing, dry). However, the macroscopic change anti‐swelling mechanisms of organohydrogels different solvents their corresponding applications not been adequately harnessed. Herein, an ionic organohydrogel with excellent mechanical properties unique behaviors (information identification encryption) sensing is prepared. The prepared shows obvious transparent owing to microphase separation poor swelling suitable solvents, can be treated a dynamic information memory device recording encrypting information. Furthermore, interaction between water dimethylsulfoxide (DMSO), demonstrates prominent freezing resistance (−90 20 °C) moisturizing retention (76% after 15 days). In addition, conductive hydrogel exhibits outstanding human motion detection physiological signal response displays stable performance dry conditions, oil or environments. It envisioned that design strategies mechanistic investigation may bio‐sensors information‐recognition platforms harsh

Language: Английский

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Hydrogel: Diversity of Structures and Applications in Food Science

Food Reviews International, Journal Year: 2021, Volume and Issue: 37(3), P. 313 - 372

Published: Jan. 21, 2021

Hydrogels are a series of soft and wet materials with three dimensions crosslinked networks. have attracted great attention due to their diverse functional properties, wide range applications, such as in robots actuators, stretched electronic devices, tissue engineering materials, controlled-release drug delivery vehicles, biomedicine food science, (bio)sensors. In general, there four core concerns hydrogel including the polymer source, structure fabrication, gel function, applications. According logic that “structure determines function”, it is believed rational design structures can effectively regulate functions applications hydrogels. Hence, current review, “structure” topic will be highly regarded, crosslinking mechanisms structural diversity hydrogels comprehensively summarized. Additionally, also show application potential science. review pays more nutrition health, processing, safety. It whished this not only serves reference for improving comprehensive understanding but provides forward-looking idea

Language: Английский

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4D-printed untethered self-propelling soft robot with tactile perception: Rolling, racing, and exploring

Matter, Journal Year: 2021, Volume and Issue: 4(10), P. 3313 - 3326

Published: Oct. 1, 2021

Language: Английский

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Reconstructable Gradient Structures and Reprogrammable 3D Deformations of Hydrogels with Coumarin Units as the Photolabile Crosslinks

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(18)

Published: March 31, 2021

Abstract Morphing hydrogels have versatile applications in soft robotics, flexible electronics, and biomedical devices. Controlling component distribution internal stress within a hydrogel is crucial for shape‐changing. However, existing gradient structures of are usually non‐reconstructable, once encoded by chemical reactions covalent bonds. Fabricating with distinct inevitable every new configuration, resulting poor reusability, adaptability, sustainability that disadvantageous diverse applications. Herein, containing reversible photo‐crosslinks enable reprogramming the 3D deformations into various configurations reported. The prepared micellar polymerization hydrophobic coumarin monomer hydrophilic acrylic acid. presence hexadecyltrimethylammonium chloride micelles increases local concentration units also improves mechanical properties forming robust polyelectrolyte/surfactant complexes serve as physical crosslinks. High‐efficiency photodimerization photocleavage coumarins realized under 365 254 nm light irradiation, respectively, affording tuning network structure hydrogel. Through photolithography, different sequentially patterned one direct configurations. Such strategy should be applicable other photolabile toward reprogrammable control functions.

Language: Английский

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Engineering Hydrogel‐Based Biomedical Photonics: Design, Fabrication, and Applications

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(23)

Published: April 30, 2021

Light guiding and manipulation in photonics have become ubiquitous events ranging from everyday communications to complex robotics nanomedicine. The speed sensitivity of light-matter interactions offer unprecedented advantages biomedical optics, data transmission, photomedicine, detection multi-scale phenomena. Recently, hydrogels emerged as a promising candidate for interfacing bioengineering by combining their light-guiding properties with live tissue compatibility optical, chemical, physiological, mechanical dimensions. Herein, the latest progress over hydrogel its applications guidance light is reviewed. Physics through living tissues, existing technical challenges translating these tools into settings are discussed. A comprehensive thorough overview materials, fabrication protocols, design architectures used provided. Finally, recent examples applying structures such optical fibers, photonic constructs, use light-driven robots, photomedicine tools, organ-on-a-chip models described. By providing critical selective evaluation field's status, this work sets foundation next generation research.

Language: Английский

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Light responsive hydrogels for controlled drug delivery

Frontiers in Bioengineering and Biotechnology, Journal Year: 2022, Volume and Issue: 10

Published: Dec. 16, 2022

Light is an easy acquired, effective and non-invasive external stimulus with great flexibility focusability. Thus, light responsive hydrogels are of particular interests to researchers in developing accurate controlled drug delivery systems. obtained by incorporating photosensitive moieties into their polymeric structures. Drug release can be realized through three major mechanisms: photoisomerization, photochemical reaction photothermal reaction. Recent advances material science have resulted development photosensitizers, such as rare metal nanostructures black phosphorus nanoparticles, order respond a variety sources. Hydrogels incorporated photosensitizers crucial for clinical applications, the use ultraviolet near-infrared well up-conversion nanoparticles has greatly increased therapeutic effects. Existing systems been utilized delivering drugs, proteins genes chemotherapy, immunotherapy, photodynamic therapy, gene wound healing other applications. Principles associated site-specific targeting, metabolism, toxicity used optimize efficacy safety, improve patient compliance convenience. In view importance this field, we review current development, challenges future perspectives delivery.

Language: Английский

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Recent Progress in Cyclic Aryliodonium Chemistry: Syntheses and Applications

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(4), P. 1364 - 1416

Published: Jan. 17, 2023

Hypervalent aryliodoumiums are intensively investigated as arylating agents. They excellent surrogates to aryl halides, and moreover they exhibit better reactivity, which allows the corresponding arylation reactions be performed under mild conditions. In past decades, acyclic aryliodoniums widely explored However, unmet need for is improvement of their notoriously low reaction economy because coproduced iodides during often wasted. Cyclic have intrinsic advantage in terms economy, started receive considerable attention due valuable synthetic applications initiate cascade reactions, can enable construction complex structures, including polycycles with potential pharmaceutical functional properties. Here, we summarizing recent advances made research field cyclic aryliodoniums, nascent design aryliodonium species applications. First, general preparation typical diphenyl iodoniums described, followed by heterocyclic monoaryl iodoniums. Then, initiated arylations coupled subsequent domino summarized construct polycycles. Meanwhile, building biaryls axial atropisomers discussed a systematic manner. Finally, very advance employed halogen-bonding organocatalysts described.

Language: Английский

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Stimuli-responsive dynamic hydrogels: design, properties and tissue engineering applications

Materials Horizons, Journal Year: 2023, Volume and Issue: 10(9), P. 3325 - 3350

Published: Jan. 1, 2023

This review provides a brief overview of the recent developments in hydrogel systems that respond dynamically to various stimuli, including some interesting fabrication strategies, and their application cardiac, bone, neural tissue regeneration.

Language: Английский

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