Featured
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| Open AccessInternal water circulation mediated synergistic co-hydrolysis of PET/cotton textile blends in gamma-valerolactone
Recycling strategies for mixed plastics and textile blends currently aim for recycling only one of the components. Here the authors demonstrate a water coupling strategy to co-hydrolyze polyester/cotton textile blends into polymer monomers and platform chemicals.
- Shun Zhang
- , Wenhao Xu
- & Yu-Zhong Wang
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Article
| Open AccessUrea-formaldehyde resin room temperature phosphorescent material with ultra-long afterglow and adjustable phosphorescence performance
Organic room temperature phosphorescent materials have useful properties, but development can be limited by processing and stability challenges. Here, the authors report a derivatisation strategy for the preparation of room temperature phosphorescent materials responsive to an electrostatic field.
- Wensheng Xu
- , Bowei Wang
- & Ligong Chen
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Article
| Open AccessMolecular orbital breaking in photo-mediated organosilicon Schiff base ferroelectric crystals
Switchable structural and physical bistability in ferroelectric materials can be achieved as result of molecular orbital breaking. Here, the authors describe the photo-mediated bistability in organosilicon Schiff base ferroelectric crystals for the modulation of dielectric, second-harmonic generation, and ferroelectric polarization and showing good in vitro biocompatibility.
- Zhu-Xiao Gu
- , Nan Zhang
- & Han-Yue Zhang
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Article
| Open AccessSpider-silk-inspired strong and tough hydrogel fibers with anti-freezing and water retention properties
Hydrogel fibres have potential in a range of applications such as flexible electronics, but achieving the desired mechanical properties can be challenging. Here, the authors report spider silk-inspired hydrogel fibres with tuneable mechanical properties suitable for flexible electronics.
- Shaoji Wu
- , Zhao Liu
- & Yurong Yan
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Article
| Open AccessHighly porous metal-organic framework liquids and glasses via a solvent-assisted linker exchange strategy of ZIF-8
The canonical metal-organic framework ZIF-8 does not melt and form a glass. Here, authors incorporated two additional organic linkers into ZIF-8 to generate meltable derivatives which can be transformed into highly porous glasses by melt-quenching.
- Wen-Long Xue
- , Pascal Kolodzeiski
- & Sebastian Henke
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Article
| Open AccessHeat-activated growth of metastable and length-defined DNA fibers expands traditional polymer assembly
The combination of dynamic, energy driven folding and growth with structural stiffness and length control is difficult to achieve in synthetic polymer self-assembly. Here the authors show that highly charged, monodisperse DNA oligomers assemble via seeded growth into length-controlled supramolecular fibers during heating.
- Michael D. Dore
- , Muhammad Ghufran Rafique
- & Hanadi F. Sleiman
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Article
| Open AccessNylons with Highly-Bright and Ultralong Organic Room-Temperature Phosphorescence
It may be useful to obtain nylon with room temperature phosphorescence, but identifying a suitable luminophore is challenging. Here, the authors report the doping of nylon with cyano-substituted benzimidazole derivatives for room temperature phosphorescent nylons.
- Dian-Xue Ma
- , Zhong-Qiu Li
- & Yu-Wu Zhong
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Article
| Open AccessConcentration-induced spontaneous polymerization of protic ionic liquids for efficient in situ adhesion
Adhesives require a balance between cohesion and interfacial adhesion, which can be challenging to achieve. Here the authors report the polymerisation of a protic ionic liquid-based monomer, with internal and external non-covalent interactions contributing to both cohesion and adhesion.
- Jun Zhang
- , Xuan Zhou
- & Shiguo Zhang
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Article
| Open Access“Ion-imprinting” strategy towards metal sulfide scavenger enables the highly selective capture of radiocesium
Selective capture of radiocaesium is highly challenging in radioactive contamination remediation. Here, authors developed “ion-imprinting” strategy towards metal sulfide scavengers to achieve selective capture of Cs(I) in high-salt environments and successful cleanup of actual 137Cs-liquid-wastes.
- Jun-Hao Tang
- , Shao-Qing Jia
- & Xiao-Ying Huang
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Article
| Open AccessA large-strain and ultrahigh energy density dielectric elastomer for fast moving soft robot
Dielectric elastomer actuators require high driving electric fields to achieve high performances for soft robots due to their low dielectric constant and high stiffness. Here, the authors introduce polar fluorinated groups and nanodomains aggregated by long alkyl side chains into the dielectric elastomer design to overcome these issues and develop fast soft robots.
- Wenwen Feng
- , Lin Sun
- & Chao Wang
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Article
| Open AccessDisentangling the effects of structure and lone-pair electrons in the lattice dynamics of halide perovskites
By comparing CsSrBr3 and CsPbBr3 with close structural similarity but the latter lacking lone-pair electrons on the octahedral metal, the authors reveal the similar vibrational anharmonicities in the two perovskites, which disentangles the electronic properties and vibrational anharmonicities.
- Sebastián Caicedo-Dávila
- , Adi Cohen
- & David A. Egger
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Article
| Open AccessStretchable phosphorescent polymers by multiphase engineering
Stretchable phosphorescent materials have potential in applications such as wearable electronics, but achieving a suitable balance of emission and stretchability is challenging. Here, the authors report the use of microphase separation to show stretchability with emission lifetimes maintained.
- Nan Gan
- , Xin Zou
- & Wei Huang
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Article
| Open AccessTracking nuclear motion in single-molecule magnets using femtosecond X-ray absorption spectroscopy
The authors use femtosecond K-edge X-ray absorption spectroscopy to follow nuclear motion in a manganese-based tri-nuclear single-molecule magnet, and resolve changes in bond lengths on the order of hundreds of ångströms and on sub-picosecond timescales.
- Kyle Barlow
- , Ryan Phelps
- & J. Olof Johansson
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Article
| Open AccessMechanically controlled multifaceted dynamic transformations in twisted organic crystal waveguides
Crystals with mechanical responses are of interest, but often only one or two dynamic motions can be achieved with one crystal. Here, the authors report a combination of dynamic movements in naturally twisted optical waveguiding microcrystals.
- Mehdi Rohullah
- , Vuppu Vinay Pradeep
- & Rajadurai Chandrasekar
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Article
| Open AccessVitrification-enabled enhancement of proton conductivity in hydrogen-bonded organic frameworks
Proton conduction is one of the interesting applications of hydrogen-bonded organic frameworks. Here, the authors report hydrogen-bonded organic framework that can be transformed into glassy state, effectively mitigating grain boundary effects, and significantly enhancing proton conduction performance.
- Feng-Fan Yang
- , Xiao-Lu Wang
- & Linfeng Liang
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Article
| Open AccessSustainable 3D printing by reversible salting-out effects with aqueous salt solutions
Here, the authors show a facile and sustainable 3D printing by utilizing a reversible salting-out effect on poly(N-isopropylacrylamide) (PNIPAM) solutions. Aqueous salt solutions lower the phase transition temperature of PNIPAM solutions below 10 °C and instantly solidify the PNIPAM solutions upon contact.
- Donghwan Ji
- , Joseph Liu
- & Jinhye Bae
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Article
| Open AccessGas adsorption and framework flexibility of CALF-20 explored via experiments and simulations
CALF-20 is a water stable structure capable of selectively separating CO2 from flue gas. Here authors use a close feedback loop between theory and experiments to understand CO2/water adsorption and framework flexibility of CALF-20.
- Rama Oktavian
- , Ruben Goeminne
- & Peyman Z. Moghadam
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Article
| Open AccessBulk transparent supramolecular glass enabled by host–guest molecular recognition
Strategies to produce supramolecular glass and the study of its intrinsic structure and mechanical properties remains largely unexplored. Here, the authors prepare a supramolecular glass via the host–guest recognition between methyl-β-cyclodextrin and para-hydroxybenzoic acid with recyclability, compatibility, and thermal processability.
- Changyong Cai
- , Shuanggen Wu
- & Shengyi Dong
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Article
| Open AccessFinely manipulating room temperature phosphorescence by dynamic lanthanide coordination toward multi-level information security
Room temperature phosphorescent materials have many desirable properties, but fine control of these can be challenging. Here, the authors report a strategy for this control by dynamic lanthanide coordination in combination with organic phosphors.
- Longqiang Li
- , Jiayin Zhou
- & Tao Chen
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| Open AccessConstructing ordered and tunable extrinsic porosity in covalent organic frameworks via water-mediated soft-template strategy
The synthesis of covalent organic frameworks (COFs) by a soft-template methodology is challenging. Here, the authors attach the soft templates to the COFs backbone via ion bonds, avoiding crystallization incompatibilities and allowing subsequent removal of the template by ion exchange for enhanced U(VI)/Th(IV) adsorption performance.
- Ningning He
- , Yingdi Zou
- & Lijian Ma
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Article
| Open AccessConverting inorganic sulfur into degradable thermoplastics and adhesives by copolymerization with cyclic disulfides
The inherent instability of poly(sulfur) renders the conversion of elementary sulfur into sulfur-rich polymers challenging which limits the use of this industrial by-product. Here, the authors demonstrate that inorganic sulfur can be utilized by copolymerizing with cyclic disulfides, producing high-performance thermoplastic elastomers with self-healing ability and degradability.
- Yuanxin Deng
- , Zhengtie Huang
- & Da-Hui Qu
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Article
| Open AccessCellulose nanofiber-mediated manifold dynamic synergy enabling adhesive and photo-detachable hydrogel for self-powered E-skin
Certain devices require rapid adhesion and detachment, but achieving both can be challenging. Here, the authors report the development of a supramolecular hydrogel with reversible tough adhesion and triggered photodetachment.
- Lei Zhang
- , Lu Chen
- & Chaoji Chen
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Article
| Open AccessEfficient recovery and recycling/upcycling of precious metals using hydrazide-functionalized star-shaped polymers
Despite the use of amine-functionalized polymers as metal adsorbents, they are generally ineffective at recovering precious metals. Here the authors prepare a star-shaped, hydrazide-functionalized polymer as a recoverable standalone adsorbent with high precious metal adsorption capability/selectivity and practical feasibility.
- Seung Su Shin
- , Youngkyun Jung
- & Jung-Hyun Lee
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Article
| Open AccessMulti-color dual wavelength vat photopolymerization 3D printing via spatially controlled acidity
Dual wavelength vat photopolymerization has emerged as a powerful approach to create multimaterial objects but require changing the resin during the printing process. Here, the authors develop a method of dual-wavelength 3D printing that can directly access multicolor parts without requiring changing of resin feedstocks or introduction of new materials during the printing process.
- Kyle C. H. Chin
- , Grant Ovsepyan
- & Andrew J. Boydston
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Article
| Open AccessGiant dielectric tunability in ferroelectric ceramics with ultralow loss by ion substitution design
The authors realize composite optimization in dielectric tunable materials by simultaneously achieving low electric field, large tunability, and low loss through ion substitution design in ferroelectric tunable materials.
- Ruitao Li
- , Diming Xu
- & Di Zhou
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Article
| Open AccessCoordination cages integrated into swelling poly(ionic liquid)s for guest encapsulation and separation
The efficient encapsulation of guests by coordination cages in the solid state is prevented by their flexibility, dynamicity, and metal-ligand bond reversibility. Here, the authors report coordination cages integrated into poly(ionic liquid)s to control swelling and mechanical properties of the gels and develop efficient and regenerable supramolecular separation materials.
- Xiang Zhang
- , Dawei Zhang
- & Mingyuan He
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Article
| Open AccessColor morphing surfaces with effective chemical shielding
Photochromic materials suffer from degradation when exposed to harsh chemical environments, but this can be overcome by providing chemical shielding via superomniphobicity. Here, the authors show the design rationale and careful materials selection for fabrication of color morphing surfaces that can simultaneously display excellent chemical resistance.
- Adil Majeed Rather
- , Sravanthi Vallabhuneni
- & Arun Kumar Kota
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Article
| Open AccessDelayed room temperature phosphorescence enabled by phosphines
Room-temperature phosphorescence usually occurs immediately after the removal of excitation. Here the authors achieve combined instant and delayed phosphorescence through introduction of phosphines into carbazole emitters.
- Guang Lu
- , Jing Tan
- & Hui Xu
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Article
| Open AccessBoosting organic phosphorescence in adaptive host-guest materials by hyperconjugation
Room-temperature phosphorescence is usually inefficient in purely organic material. Here, the authors achieve near-unity phosphorescence efficiency with color tunability in adaptive host-guest materials through use of hyperconjugation.
- Huili Ma
- , Lishun Fu
- & Wei Huang
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Article
| Open AccessIsostructural doping for organic persistent mechanoluminescence
Organic mechanoluminescent materials have potential in a range of applications, but it can be challenging to achieve long-lived emission. Here, the authors report isostructural doping as a strategy to achieve multicolour and high efficiency organic mechanoluminescence, applied in stress sensing.
- Zongliang Xie
- , Yufeng Xue
- & Bin Liu
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Article
| Open AccessIn situ enzymatic control of colloidal phoresis and catalysis through hydrolysis of ATP
The design of synthetic systems that can sense chemical gradients and respond with directional motility and chemical activity is of interest. Here, the authors realize and control such behaviors in a synthetic system by tailoring multivalent interactions of adenosine nucleotides with catalytic microbeads.
- Ekta Shandilya
- , Bhargav Rallabandi
- & Subhabrata Maiti
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Article
| Open AccessSelf-condensation-assisted chemical vapour deposition growth of atomically two-dimensional MOF single-crystals
2D MOFs have a variety of applications, including molecular separation and atomically thin electronics. Here authors demonstrate the preparation of monolayer and few-layer MOF single-crystals using a self-condensation-assisted CVD method.
- Lingxin Luo
- , Lingxiang Hou
- & Jian Zheng
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Article
| Open AccessHighly efficient in crystallo energy transduction of light to work
Crystals are known to have a range of responses to light, but multiple responses in the same material are rare. Here, the authors report different mechanical effects in response to light across three polymorphs as a result of a dimerization reaction.
- Jiawei Lin
- , Jianmin Zhou
- & Junbo Gong
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Article
| Open AccessVisible-light-excited robust room-temperature phosphorescence of dimeric single-component luminophores in the amorphous state
Organic room temperature phosphorescence (RTP) is limited to rigid environments. Here, the authors report a single-component system with robust persistent RTP emissions in various aggregation states, such as crystalline, fine powder, and amorphous.
- Danman Guo
- , Wen Wang
- & Zhiyong Yang
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Article
| Open AccessStaggered structural dynamic-mediated selective adsorption of H2O/D2O on flexible graphene oxide nanosheets
Graphene oxide is a promising material for molecular separation technologies. Here, the authors propose a realistic staggered stacking structure that plays a crucial role in H/D recognition in water adsorption, as well as high mobilities of water.
- Ryusuke Futamura
- , Taku Iiyama
- & Katsumi Kaneko
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Article
| Open AccessTimescale correlation of shallow trap states increases electrochemiluminescence efficiency in carbon nitrides
Differences in timescales of electron transfer reactions limit the efficiency of electrochemiluminescence. Here, the authors coordinate the timescales using shallow trap states in carbon nitride to achieve high efficiencies applied in nitrite sensing.
- Yanfeng Fang
- , Hong Yang
- & Yuanjian Zhang
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Article
| Open AccessControl of polymers’ amorphous-crystalline transition enables miniaturization and multifunctional integration for hydrogel bioelectronics
Soft elastic materials could be useful in the fabrication of brain-machine interfaces, but achieving the desirable material properties can be challenging. Here, the authors report control of the amorphous-crystalline transition of polymers to alter hydrogel properties and monitor mouse behaviour.
- Sizhe Huang
- , Xinyue Liu
- & Siyuan Rao
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Article
| Open AccessConfining single Er3+ ions in sub-3 nm NaYF4 nanoparticles to induce slow relaxation of the magnetisation
Many of the most industrially important magnets require the addition of rare-earths to improve their coercivity and magnetic performance. Here, the authors place a single paramagnetic rare-earth ion, Er3+, in a diamagnetic nanoparticle, and study the slow relaxation of the resulting nanoparticles, providing vital information for the further development of rare-earth magnetic materials.
- Diogo A. Gálico
- , Emille M. Rodrigues
- & Muralee Murugesu
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Article
| Open AccessEstablishing superfine nanofibrils for robust polyelectrolyte artificial spider silk and powerful artificial muscles
Spider silk has desirable properties, but these are hard to replicate with artificial materials. Here, the authors report a polyelectrolyte artificial spider silk, with control over dissociation of the polymer chains by introduction of ions, and thermally driven supercontraction.
- Wenqian He
- , Meilin Wang
- & Zunfeng Liu
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Article
| Open AccessSweat permeable and ultrahigh strength 3D PVDF piezoelectric nanoyarn fabric strain sensor
Electronic packaging causes piezoelectric sensors to be airtight, resulting in poor wearing comfort. To address this issue, the authors develop a 3D all-fiber piezoelectric sensor with sweat permeable using the advanced 3D textile technology.
- Wei Fan
- , Ruixin Lei
- & Shengbo Ge
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Article
| Open AccessHighly defective ultra-small tetravalent MOF nanocrystals
Crystalline materials’ properties are highly dependent on their size. Here authors report a general synthesis of ultrasmall (4–6 nm) and highly defective Zr/Hf-Metal Organic Frameworks nanoparticles that present enhanced peptide hydrolysis performance.
- Shan Dai
- , Charlotte Simms
- & Christian Serre
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Article
| Open AccessAn organic proton cage that is ultra-resistant to hydroxide-promoted degradation
Organic cations are typically unstable under low-humidity, alkaline conditions. Here, the authors report an organic cation featuring a proton protected within a cage that can withstand vapor-phase alkaline conditions.
- Chase L. Radford
- , Torben Saatkamp
- & Steven Holdcroft
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Article
| Open AccessRedefined ion association constants have consequences for calcium phosphate nucleation and biomineralization
While clusters in calcium orthophosphate nucleation have long been known, their speciation and mechanistic pathways to hydroxyapatite remain debated. Here the authors report a revision of ion association in the calcium phosphate system and explore the consequences thereof on the early stages of phase separation.
- David P. McDonogh
- , Julian D. Gale
- & Denis Gebauer
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Article
| Open AccessIntelligent perceptual textiles based on ionic-conductive and strong silk fibers
Perception plays a pivotal role in advancing future intelligent textiles. Here, the authors develop smart perceptual textiles using natural-derived ionic-conductive silk fibers. These textiles can electrically detect external hazards and precisely pinpointing human touch, making them suitable for smart protective clothing and soft human-machine interfaces.
- Haojie Lu
- , Yong Zhang
- & Yingying Zhang
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Article
| Open AccessRapid room-temperature phosphorescence chiral recognition of natural amino acids
Chiral recognition of amino acids with luminescence, despite its advantages, is usually slow and lacks generality. Here, the authors demonstrate that L-phenylalanine derived benzamide can manifest the structural difference between the natural, left-handed amino acid and its right-handed counterpart via the difference in room-temperature phosphorescence, irrespective of the specific chemical structure.
- Xiaoyu Chen
- , Renlong Zhu
- & Guoqing Zhang
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Article
| Open AccessOrbital hybridization of donor and acceptor to enhance the conductivity of mixed-stack complexes
Mixed-stack complexes consisting of alternating donors and acceptors typically show low electrical conductivity. Here, the authors improved the conductivity by hybridizing the frontier orbitals of the donor and acceptor at the neutral–ionic boundary.
- Tomoko Fujino
- , Ryohei Kameyama
- & Hatsumi Mori
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Article
| Open AccessBioadhesive interface for marine sensors on diverse soft fragile species
It is useful to be able to equip marine animals with sensors, but it can be challenging to attach these to soft marine organisms. Here, the authors use an adhesive hydrogel to achieve rapid attachment of sensors to marine life including jellyfish, squid and lobster.
- Camilo Duque Londono
- , Seth F. Cones
- & Xuanhe Zhao
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Article
| Open AccessUnconventional mechanical and thermal behaviours of MOF CALF-20
CALF-20 MOF is considered a benchmark sorbent for industrial scale CO2 capture. Here authors use machine-learning potential simulations to show that CALF-20 exhibits anomalous structural responses to temperature and strain stimuli, with potential applications in mechanical/thermal sensing.
- Dong Fan
- , Supriyo Naskar
- & Guillaume Maurin
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Article
| Open Access3D printable strong and tough composite organo-hydrogels inspired by natural hierarchical composite design principles
The preparation of composite hydrogels can allow for mechanical properties to be enhanced, and hierarchical structures can be effective. Here, the authors report improved mechanical properties by the addition of ceramic platelets to an organohydrogel in direct ink writing.
- Quyang Liu
- , Xinyu Dong
- & Wei Zhai