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Defect self-assembly of metal-organic framework triggers ferroptosis to overcome resistance

Bioactive materials 2023年第1期19卷 1-11页

作者： Haibao Peng Xingcai Zhang Peng Yang Jiaxu Zhao Wei Zhang Nianping Feng Wuli Yang Jing Tang Institute for Translational Brain Research Fudan UniversityShanghai200032China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai200438China Department of Pharmaceutical Sciences Shanghai University of Traditional Chinese MedicineShanghai201203China Department of Materials Science and Engineering Stanford UniversityStanfordCA94305United States School of Engineering and Applied Sciences Harvard UniversityCambridgeMA02138United States Engineering Research Center of Molecular-and Neuro-imaging of Ministry of Education School of Life Science and TechnologyXidian University710126China

The emergence of multidrug treatment resistance presents a hurdle for the successful chemotherapy of ***,resulting from the iron-dependent accumulation of lipid peroxides,has the potential to reverse multidrug ***,simultaneous delivery of the iron sources,ferroptosis inducers,drugs,and enhanced circulation carriers within matrices remains a significant ***,we designed and fabricated a defect self-assembly of metal-organic framework(MOF)-red blood cell(RBC)membrane-camouflaged multi-drug-delivery nanoplatform for combined ferroptosis-apoptosis treatment of multidrug-resistant *** and chemotherapeutic drugs are embedded in the centre of the iron(III)-based MOF at defect sites by coordination with metal clusters during a one-pot solvothermal synthesis *** RBC membrane could camouflage the nanoplatform for longer *** results demonstrate that this defect self-assembly-enabled MOF-membrane-camouflaged nanoplatform could deplete the glutathione,amplify the reactive oxidative species oxidative stress,and enable remarkable anticancer *** work provides an alternative strategy for overcoming multidrug resistance,which could regulate the fluidity and permeability of the cell membrane by ferroptosis to downregulate of P-glycoprotein protein expression by *** defect self-assembly-enabled MOF-membrane-camouflaged multi-drug-delivery nanoplatform has great therapeutic potential.

关键词： Metal-organic framework Defect nanostructures Ferroptosis Membrane-camouflaged Multi-drug-delivery

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Continuous Lithium-Ion Extraction From Seawater and Mine Water With a Fuel Cell System and Ceramic Membranes

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Energy & Environmental materials 2024年第6期 258-265页

作者： Cansu K?k Lei Wang Jean Gustavo A.Ruthes Antje Quade Matthew E.Suss Volker Presser INM-Leibniz Institute for New Materials Department of Materials Science & Engineering Saarland University Leibniz Institute for Plasma Science and Technology Faculty of Mechanical Engineering Technion-Israel Institute of Technology Wolfson Department of Chemical Engineering Technion-Israel Institute of Technology Grand Technion Energy Program Technion-Israel Institute of Technology Saarene-Saarland Center for Energy Materials and Sustainability

The demand for electronic devices that utilize lithium is steadily increasing in this rapidly advancing technological *** high-purity lithium in an environmentally friendly way is challenging by using commercialized ***,we propose the first fuel cell system for continuous lithium-ion extraction using a lithium superionic conductor membrane and advanced *** fuel cell system for extracting lithium-ion has demonstrated a twofold increase in the selectivity of Li+/Na+while producing electricity.

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Rationally Leveraging Polymer Chain-Length Heterogeneity for Robust Structural engineering

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CCS Chemistry 2024年第8期6卷 1965-1977页

作者： Zhanhui Gan Luyang Li Dongdong Zhou Zhuoqi Xu Zhuang Ma Jiawen He Weihua Li Xue-Hui Dong South China Advanced Institute for Soft Matter Science and Technology School of Emergent Soft MatterSouth China University of TechnologyGuangzhou 510640 State Key Laboratory of Molecular Engineering of Polymers Key Laboratory of Computational Physical SciencesDepartment of Macromolecular ScienceFudan UniversityShanghai 200433 College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065 Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices South China University of TechnologyGuangzhou 510640

The inherent uncertainty of chain length in synthetic polymers casts doubt on the explicit understanding of fundamental *** study quantitatively assesses the critical role of chain-length distribution in the self-assembly process,aiming to identify the point at which discernible discrepancies begin to *** blending discrete diblock copolymers of varying sizes,chain-length nonuniformity can be precisely regulated while the average composition remains *** a minor heterogeneity leads to an expansion of lattice dimension,while a phase transition occurs as the difference exceeds a ***,a transition from the Frank–Kasperσphase to the body-centered cubic phase was triggered by enlarging the size difference of the corona block,while introducing heterogeneity in the core block stabilized the hexagonally close-packed spheres.A self-consistent field theory calculation reveals that the synergy between the long and short chains effectively releases packing frustration,leading to substantial changes in the free-energy landscape and stabilizing unconventional phases otherwise *** work calls particular attention to the importance of chain-length heterogeneity and provides a robust approach to finely tuning the phase behavior and physical properties of block copolymers without altering their chemical composition.

关键词： discrete polymer molecular weight distribution self-assembly hexagonally close-packed phase Frank-Kasper phases

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Plastic‑Swelling Preparation of Functional Graphene Aerogel Fiber Textiles

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Advanced Fiber materials 2023年第6期5卷 2016-2027页

作者： Yuxiang Qi Yuxing Xia Peng Li Ziqiu Wang Xin Ming Bo Wang Kai Shen Gangfeng Cai Kaiwen Li Yue Gao Yingjun Liu Chao Gao Zhen Xu MOE Key Laboratory of Macromolecular Synthesis and Functionalization International Research Centre for X PolymersDepartment of Polymer Science and EngineeringZhejiang University38 Zheda RoadHangzhou 310027People’s Republic of China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030032People’s Republic of China

Graphene aerogel fibers(GAFs)combine the advantages of lightweight,high specific strength and conductivity of graphene,showing great potential in multifunctional wearable ***,the fabrication and application of GAF textiles are considerably limited by the low structural robustness of ***,we report a plastic-swelling method to fabricate GAF textiles with high performance and *** textiles were achieved by plastic-swelling,the prewoven graphene oxide fiber(GOF)tow *** near-solid plastic-swelling process allows GAFs in textiles to maintain high structural order and controllable density,and exhibit record-high tensile strength up to 103 MPa and electrical conductivity up to 1.06.104 S m−1 at the density of 0.4 g cm−*** textiles exhibit high strength of 113 MPa,multiple electrical and thermal functions,and high porosity to serve as host materials for more functional *** plastic-swelling provides a general strategy to fabricate diverse aerogel fiber textiles,paving the road for their realistic application.

关键词： Aerogel fiber Plastic-swelling Smart textiles Graphene

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Stretchable piezoelectric polymer blend for dynamic stress and strain sensing

Stretchable piezoelectric polymer blend for dynamic stress a...

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Nano-, Bio-, Info-Tech Sensors, and Wearable Systems 2023

作者： Tu, Ruowen Sodano, Henry A. Department of Aerospace Engineering University of Michigan Ann ArborMI48109 United States Department of Materials Science and Engineering University of Michigan Ann ArborMI48109 United States Department of Macromolecular Science and Engineering University of Michigan Ann ArborMI48109 United States

ISBN: (纸本)9781510660779

Flexible and stretchable stress and strain sensing materials have gained a lot of research interest recently as the development of wearable sensors for health monitoring, motion capturing and soft robotics. In these applications where dynamic stress and strain are common, piezoelectricity becomes a suitable sensing mechanism due to its fast response and high sensitivity. Existing research on flexible piezoelectric materials includes nanocomposites and sandwich composites made of piezoelectric fillers and elastomers. However, the giant modulus mismatch between the two distinct phases makes nanocomposites or sandwich materials prone to inaccurate sensing under large strains due to the weak stress transfer efficiency. In this research, polyvinylidene fluoride (PVDF) and unvulcanized nitrile rubber (NBR) are both dissolved in N, N-dimethylformamide (DMF) and then precipitation printed into a water bath to produce PVDF/NBR polymer blends. The blends are further vulcanized via hot pressing. The resulting blends exhibit polar phases of PVDF, highly uniform blend morphology, as well as excellent stretchability. As a stretchable sensor, the PVDF/NBR (2:8) shows consistent open circuit voltage-strain and open circuit voltage-stress relationships, as well as a high operating strain range up to 70%. Therefore, the PVDF/NBR blend can be used as a promising dynamic stress/strain sensing material for wearable sensors or soft robotic sensors. © 2023 SPIE.

关键词： Open circuit voltage

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Automated classification of big X-ray diffraction data using deep learning models

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npj Computational materials 2023年第1期9卷 169-180页

作者： Jerardo E.Salgado Samuel Lerman Zhaotong Du Chenliang Xu Niaz Abdolrahim Materials Science program University of RochesterRochesterNew York 14627USA Department of Computer Science University of RochesterRochesterNew York 14627USA Department of Mechanical Engineering University of RochesterRochesterNew York 14627USA Laboratory for Laser Energetics University of RochesterRochesterNew York 14627USA

In current in situ X-ray diffraction(XRD)techniques,data generation surpasses human analytical capabilities,potentially leading to the loss of *** techniques require human intervention,and lack the performance and adaptability required for material *** the critical need for high-throughput automated XRD pattern analysis,we present a generalized deep learning model to classify a diverse set of materials’crystal systems and space *** our approach,we generate training data with a holistic representation of patterns that emerge from varying experimental conditions and crystal *** also employ an expedited learning technique to refine our model’s expertise to experimental *** addition,we optimize model architecture to elicit classification based on Bragg’s Law and use evaluation data to interpret our model’s *** evaluate our models using experimental data,materials unseen in training,and altered cubic crystals,where we observe state-of-the-art performance and even greater advances in space group classification.

关键词： Automate classify cubic

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Severe Plastically Deformed Mg–Zn–Zr–RE Alloy Developed as a Biomaterial

Severe Plastically Deformed Mg–Zn–Zr–RE Alloy Developed a...

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Magnesium Technology Symposium held at the TMS Annual Meeting and Exhibition, 2024

作者： Shunmugasamy, Vasanth C. Mansoor, Bilal Mechanical Engineering Program Texas A&M University at Qatar Doha Qatar Department of Materials Science and Engineering Texas A&M University College StationTX United States

ISBN: (纸本)9783031502392

Mg alloysMagnesium alloys (Mg alloys) have high corrosion rateCorrosion Rate that inhibits their application as biomaterialBiomaterials. For safe use as biomaterial, it is essential to control their corrosion ratesCorrosion Rate. In Mg alloys, microgalvanicMicro-galvanic corrosion coupling between the α-Mg matrix and secondary precipitates can exist which results in increased corrosion rate. To address this challenge, we engineered the microstructureMicrostructure of a biodegradable Mg–Zn–RE–Zr alloy by severe plastic deformationPlastic deformation process such as friction stir processingFriction Stir Processing (FSP) (FSP), improving its corrosion resistance and mechanical propertiesMechanical Properties simultaneously. Subjecting the alloy to FSP resulted in refined grains, basal textureTexture and broken and uniformly distributed secondary precipitates. In vitro corrosion of base material showed microgalvanic coupling between precipitate and matrix, resulting in unstable surface layer. The processed alloy showed uniform corrosion owing to formation of stable surface film formation, due to the refined grains, texture, and distribution of precipitates. The results show promising potential of Mg alloyMagnesium alloys (Mg alloys)as biomaterialBiomaterials. © The Minerals, Metals & materials Society 2024.

关键词： Corrosion resistance

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Fiber lithium-ion battery from a view of application

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science Bulletin 2024年第24期69卷 3796-3799页

作者： Xiangran Cheng Chenhao Lu Jiaxin Li Chuanfa Li Haibo Jiang Yanan Zhang Tianbing Song Jiajia Wang Xiaocheng Gong Bingjie Wang Huisheng Peng State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceInstitute of Fiber Materials and Devicesand Laboratory of Advanced MaterialsFudan UniversityShanghai 200438China

With the rise of flexible wearable electronics,the demands for flexible energy storage devices have significantly increased to power other flexible electronics[1].Lithium-ion batteries(LIBs),renowned for their high energy density,long cycle lifespan,and high operating voltage,have been widely used as commercial power sources for various portable electronics[2].However,traditional LIBs,typically characterized by rigid and bulky structures,fail to meet the requirements of next-generation electronic ***.

关键词： battery lithium typically

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Development of a novel quality control indicator for coffee roasting based on the digitalization of smell by a portable electronic nose 20

Development of a novel quality control indicator for coffee ...

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20th International Joint Conference on Computer science and Software engineering, JCSSE 2023

作者： Somaudon, Varanya Sakuldee, Pathapee Kerdcharoen, Teerakiat Materials Science and Engineering Program Mahidol University Faculty of Science Bangkok Thailand School of Science Material Engineering Mae Fah Luang University Chiang rai Thailand Mahidol University Faculty of Science Department of Physics Bangkok Thailand

ISBN: (纸本)9798350300505

Northern Thailand is home to several Arabica coffee-growing regions, including Mae-kampong, Teentok, Mae-lord, and Monngo Valleys, whose coffees are featured throughout this study. These coffees have distinct aromas and flavors due to their varied cultivation locations, which are influenced by unique climatic conditions. The purpose of this paper is to comprehend the aroma of coffees brought from various locations and roasted under the same conditions. Our lab-made electronic nose (e-nose) was used to digitalize and analyze the smell of coffee. In order to monitor the coffee scent throughout roasting and assess how similar the aromas of coffee samples taken from various locations are to one another, principal component analysis and hierarchical cluster analysis were used. It was found that our e-nose system is an effective tool for determining the geo-location of the coffee origin as well as for quality control of coffee production. © 2023 IEEE.

关键词： Electronic nose

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Electrochemical and Structural Characterization of Electropolymerized Composite of NH2-Graphene and Polyaniline

Electrochemical and Structural Characterization of Electropo...

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2023 IEEE International Conference on Agrosystem engineering, Technology and Applications, AGRETA 2023

作者： Pa-A, Jonathan E. Enriquez, Erwin P. Silliman University Department of Chemistry Dumaguete City6200 Philippines Ateneo de Manila University School of Science and Engineering Department of Chemistry and Program in Materials Science and Engineering Quezon City1108 Philippines

ISBN: (纸本)9798350347333

The NH2-graphene/polyaniline composites are synthesized by in situ electropolymerization of aniline monomer and NH2-functionalized graphene ('NH2-graphene') sheets in acidic electrolyte solution by constant-potential coulometry. Cyclic voltammetry and FTIR analyses confirm the covalent attachment of polyaniline backbone onto NH2-graphene in the composite. Having the same functional moieties (NH2-group), the polyaniline nanofibers are grafted laterally forming 'synapses' resulting in improved charge-transfer reaction and stability of the composite. This link is believed to be 'phenazine-like' microstructure formed at the edges of graphene sheets as evidenced by SEM and TEM images. The voltammograms of the NH2-graphene/polyaniline composite films coated onto pencil lead graphite electrodes (PLGE) exhibit remarkable increase in the current density relative to the bare PLGE and polyaniline-coated PLGEs. Based on the electrochemical impedance spectroscopy (EIS) measurements, the enhancement in the electrochemical properties of the composite may be due to the good chargetransfer redox activity of polyaniline fibers that are grafted onto the NH2-graphene sheet. The composite film also demonstrated photo-responsive property which could be useful for sensing or photovoltaic cell design. © 2023 IEEE.

关键词： Electrochemical impedance spectroscopy

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