Amphoteric Cellulose‐Based Double‐Network Hydrogel Electrolyte Toward Ultra‐Stable Zn Anode

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(13)

Published: Feb. 1, 2023

Zinc (Zn) metal anode suffers from uncontrollable Zn dendrites and parasitic side reactions at the interface, which restrict practical application of aqueous rechargeable zinc batteries (ARZBs). Herein, an amphoteric cellulose-based double-network is introduced as hydrogel electrolyte to overcome these obstacles. On one hand, groups build anion/cation transport channels regulate electro-deposition behavior on (002) crystal plane enabled by homogenizing Zn2+ ions flux. other strong bonding between negatively charged carboxyl promote desolvation process [Zn(H2 O)6 ]2+ eliminate reactions. Based above two functions, enables ultra-stable cycling with a cumulative capacity 7 Ah cm-2 20 mA /20 mAh for Zn||Zn cell. This work provides significant concepts developing electrolytes realize stable high-performance ARZBs.

Language: Английский

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Stimuli-Responsive Polymer-Based Nanosystems for Cancer Theranostics

ACS Nano, Journal Year: 2023, Volume and Issue: 17(23), P. 23223 - 23261

Published: Dec. 2, 2023

Stimuli-responsive polymers can respond to internal stimuli, such as reactive oxygen species (ROS), glutathione (GSH), and pH, biological enzymes, external lasers ultrasound, etc., by changing their hydrophobicity/hydrophilicity, degradability, ionizability, thus have been widely used in biomedical applications. Due the characteristics of tumor microenvironment (TME), stimuli-responsive that cater specifically TME extensively prepare smart nanovehicles for targeted delivery therapeutic diagnostic agents tissues. Compared conventional drug nanosystems, TME-responsive nanosystems many advantages, high sensitivity, broad applicability among different tumors, functional versatility, improved biosafety. In recent years, a great deal research has devoted engineering efficient polymeric significant improvement made both cancer diagnosis therapy. this review, we summarize some advances involving use polymer nanocarriers delivery, imaging, therapy, theranostics. Various chemical stimuli will be described context nanosystems. Accordingly, groups responsible responsiveness strategies incorporate these into discussed detail. With on topic expending at fast pace, innovative concepts, sequential cascade release, NIR-II multifunctional formulations, emerged popular enhanced performance, which also included here with up-to-date illustrations. We hope review offer valuable insights selection optimization help accelerate future applications treatment.

Language: Английский

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Self‐Healing Hydrogel Bioelectronics

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(21)

Published: Nov. 22, 2023

Abstract Hydrogels have emerged as powerful building blocks to develop various soft bioelectronics because of their tissue‐like mechanical properties, superior bio‐compatibility, the ability conduct both electrons and ions, multiple stimuli‐responsiveness. However, hydrogels are vulnerable damage, which limits usage in developing durable hydrogel‐based bioelectronics. Self‐healing aim endow with property repairing specific functions after failure, thus improving durability, reliability, longevity. This review discusses recent advances self‐healing hydrogels, from mechanisms, material chemistry, strategies for properties improvement hydrogel materials, design, fabrication, applications bioelectronics, including wearable physical biochemical sensors, supercapacitors, flexible display devices, triboelectric nanogenerators (TENGs), implantable etc. Furthermore, persisting challenges hampering development prospects proposed. is expected expedite research

Language: Английский

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Wide‐Humidity Range Applicable, Anti‐Freezing, and Healable Zwitterionic Hydrogels for Ion‐Leakage‐Free Iontronic Sensors

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(22)

Published: March 15, 2023

Hydrogels have entered the spotlight for applications in soft electronics. It is essential and challenging to obtain hydrogels that can function properly under varying environmental circumstances, is, 30-90% relative humidity (RH) -20 40 °C due their intrinsic nature lose absorb water upon variations temperature. In this work, a green solvent, solketal, introduced into poly 3-dimethyl-2-(2-methylprop-2-enoyloxy)ethyl azaniumyl propane-1-sulfonate (poly(DMAPS)) zwitterionic hydrogels. Compared glycerol, solketal endows with greater possibility further modification as well improved content mechanical performance consistency over RH. Encouragingly, optimized hydrogel demonstrates its unique merits dielectric layer iontronic sensors, featuring non-leaky ions, high sensitivity (1100 kPa-1 ), wide humidity, temperature range applicability. A wide-humidity healable stretchable electrode attained by combining substrate Ag paste. full-device highly-sensitive sensor developed. This study pioneering work tackles broad applicability issue of hydrogels, ion-leakage-free ionic skins dielectrics. The outcomes will considerably promote advancements fields electronics sensors.

Language: Английский

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A Molecularly Engineered Zwitterionic Hydrogel with Strengthened Anti‐Polyelectrolyte Effect: from High‐Rate Solar Desalination to Efficient Electricity Generation

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(43)

Published: June 21, 2023

Abstract Polyzwitterionic hydrogel is an emerging material for solar‐driven water evaporation in saline environment due to its special anti‐polyelectrolyte effect, which a promising approach co‐generation of freshwater and electricity. However, the molecular impact on effect remains unclear, let alone optimize zwitterionic structure promote efficiency high‐salinity brine. Herein, molecularly engineered developed incorporated phenyl‐methylene‐imidazole motif greatly enhances salt binding ability strengthens leading boosted hydration, improved tolerance, ultra‐low enthalpy (almost half traditional gel), durable anti‐microbial Besides, gradient solar‐thermal network penetrated transport channel heat confinement. The gel exhibits excellent rate 3.17 kg m −2 h −1 seawater, 1.6 times that such high could be maintained during 8 continuous desalination, demonstrating outstanding tolerance. flux ion stream can generate considerable voltage (321.3 mV) simultaneously. This work will bring new insights understanding at level materials design evaporation.

Language: Английский

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Tumor Abnormality-Oriented Nanomedicine Design

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(18), P. 10920 - 10989

Published: Sept. 15, 2023

Anticancer nanomedicines have been proven effective in mitigating the side effects of chemotherapeutic drugs. However, challenges remain augmenting their therapeutic efficacy. Nanomedicines responsive to pathological abnormalities tumor microenvironment (TME) are expected overcome biological limitations conventional nanomedicines, enhance efficacies, and further reduce effects. This Review aims quantitate various TME, which may serve as unique endogenous stimuli for design stimuli-responsive provide a broad objective perspective on current understanding cancer treatment. We dissect typical transport process barriers drug delivery, highlight key principles designed tackle series delivery process, discuss "all-into-one" "one-for-all" strategies integrating needed properties nanomedicines. Ultimately, we insight into future perspectives toward clinical translation

Language: Английский

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Driving Polymer Brushes from Synthesis to Functioning

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(27)

Published: March 23, 2023

The great success of controlled radical polymerizations has encouraged researchers to develop more facile and robust approaches for surface-initiated (SIPs) fabricate polymer brushes, even non-experts. In recent years, external-stimuli-mediated polymerization methods have come the fore as SIPs because their less rigorous synthetic procedures high controllability, which expand opportunities synthesizing macromolecules with desired chemical compositions structures, well tailor-made polymers bioconjugates that show broad applicability physiological compatibility. This review discusses latest developments in methods, particular, external-stimuli mediated atom transfer (ATRP), photo-induced polymerizations, reversible addition-fragmentation chain (RAFT) polymerization, other combination application surface grafting. implementation these is interest due unique possibilities temporally control a process, fast straightforward environmentally benign features, lead established emerging applications biolubrication, antifouling, biosensing.

Language: Английский

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Injectable Polyzwitterionic Lubricant for Complete Prevention of Cardiac Adhesion

Macromolecular Bioscience, Journal Year: 2023, Volume and Issue: 23(4)

Published: March 3, 2023

After cardiac surgery, tissue damage to the heart may cause adhesion between and its surrounding tissues. Post-operative lead limited normal function, decreased quality of increased risk major bleeding during reoperation. Therefore, it is necessary develop an effective anti-adhesion therapy overcome adhesion. An injectable polyzwitterionic lubricant developed prevent tissues maintain pumping function heart. This evaluated in a rat model. Poly (2-methacryloyloxyethyl phosphorylcholine) (i.e., PMPC) polymers are successfully prepared via free radical polymerization monomer MPC, optimal lubricating performance, biocompatibility both vitro vivo demonstrated. Besides, model conducted evaluate bio-functionality lubricated PMPC. The results prove that PMPC promising for complete adhesion-prevention. shows excellent properties can effectively

Language: Английский

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Hydrothermal Synthesis of Highly Crystalline Zwitterionic Vinylene-Linked Covalent Organic Frameworks with Exceptional Photocatalytic Properties

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(46), P. 25222 - 25232

Published: Oct. 19, 2023

Ionic covalent organic frameworks (COFs) featuring both crystallinity and ionic characteristics have attracted tremendous attention in recent years. Compared with single anion- or cation-containing COFs, zwitterionic COFs possess unique functionalities beyond such as tunable charge density superhydrophilic highly ion-conductive characteristics, endowing them huge potential various applications. However, it remains a considerable challenge to directly synthesize robust, crystalline from the original building blocks. Herein, we report green hydrothermal synthesis strategy prepare vinylene-linked (ZVCOFs) predesigned block by utilizing 4-dimethylaminopyridine (DMAP) high-efficiency catalyst for first time. Detailed theoretical calculations experiments revealed that high catalytic activity of DMAP role water contributed formation ZVCOFs. It was found participation could not only remarkably reduce activation energy barrier thus enhance reaction reversibility but also enable hydration sites facilitate ordered layered arrangement, which are favorable ZVCOF crystallization. Benefiting π-conjugated structure hydrophilic characteristic, obtained ZVCOFs achieved an ultrahigh sacrificial photocatalytic hydrogen evolution rate 2052 μmol h-1 under visible light irradiation apparent quantum yield up 47.1% at 420 nm, superior nearly all COF-based photocatalysts ever reported. Moreover, be deposited on support film device, demonstrated remarkable performance 402.1 mmol m-2 evolution.

Language: Английский

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Amphoteric Cellulose‐Based Double‐Network Hydrogel Electrolyte Toward Ultra‐Stable Zn Anode

Angewandte Chemie, Journal Year: 2023, Volume and Issue: 135(13)

Published: Feb. 1, 2023

Abstract Zinc (Zn) metal anode suffers from uncontrollable Zn dendrites and parasitic side reactions at the interface, which restrict practical application of aqueous rechargeable zinc batteries (ARZBs). Herein, an amphoteric cellulose‐based double‐network is introduced as hydrogel electrolyte to overcome these obstacles. On one hand, groups build anion/cation transport channels regulate electro‐deposition behavior on (002) crystal plane enabled by homogenizing 2+ ions flux. other strong bonding between negatively charged carboxyl promote desolvation process [Zn(H 2 O) 6 ] eliminate reactions. Based above two functions, enables ultra‐stable cycling with a cumulative capacity 7 Ah cm −2 20 mA /20 mAh for Zn||Zn cell. This work provides significant concepts developing electrolytes realize stable high‐performance ARZBs.

Language: Английский

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