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One-Dimensional Magnetic FeCoNi Alloy Toward Low-Frequency Electromagnetic Wave Absorption

Nano-Micro Letters 2022年第10期14卷 260-272页

作者： Bintong Yang Jiefeng Fang Chunyang Xu Hui Cao Ruixuan Zhang Biao Zhao Mengqiu Huang Xiangyu Wang Hualiang Lv Renchao Che Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsDepartment of Materials ScienceFudan UniversityShanghai 200438People’s Republic of China Willian G.Lowrie Department of Chemical and Biomolecular Engineering The Ohio State UniversityColumbusOH 43210USA Zhejiang Laboratory Joint-Research Center for Computational MaterialsHangzhou 311100People’s Republic of China

Rational designing of one-dimensional(1D)magnetic alloy to facilitate electromagnetic(EM)wave attenuation capability in low-frequency(2-6 GHz)microwave absorption field is highly desired but remains a significant *** this study,a composite EM wave absorber made of a FeCoNi medium-entropy alloy embedded in a 1D carbon matrix framework is rationally designed through an improved electrospinning *** 1D-shaped FeCoNi alloy embedded composite demonstrates the high-density and continuous magnetic network using off-axis electronic holography technique,indicating the excellent magnetic loss ability under an external EM ***,the in-depth analysis shows that many factors,including 1D anisotropy and intrinsic physical features of the magnetic medium-entropy alloy,primarily contribute to the enhanced EM wave absorption ***,the fabricated EM wave absorber shows an increasing effective absorption band of 1.3 GHz in the low-frequency electromagnetic field at an ultrathin thickness of 2 ***,this study opens up a new method for the design and preparation of high-performance 1D magnetic EM absorbers.

关键词： Medium-entropy magnetic alloy One-dimension Off-axis electronic holography technique Improved electrospinning Lower-frequency electromagnetic wave absorption

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European Physical Journal E 2024年第6期47卷 1-4页

作者： Andelman, David Di Meglio, Jean-Marc Safinya, Cyrus R. Tel Aviv University School of Physics and Astronomy Ramat Aviv Tel Aviv69978 Israel MSCmed Lab Université Paris Cité Paris75006 France Materials Department Molecular Cellular and Developmental Biology Department Department of Physics and Biomolecular Science & ampEngineering Program University of California Santa Barbara Santa BarbaraCA93106 United States

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σ-Alkynyl Adsorption Enables Electrocatalytic Semihydrogenation of Terminal Alkynes with Easy-Reducible/Passivated Groups over Amorphous PdS xNanocapsules

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Journal of the American chemical Society 2022年第42期144卷 19456-19465页

作者： Li, Huizhi Gao, Ying Wu, Yongmeng Liu, Cuibo Cheng, Chuanqi Chen, Fanpeng Shi, Yanmei Zhang, Bin Department of Chemistry Institute of Molecular Plus School of Science Tianjin University Tianjin300072 China Haihe Laboratory of Sustainable Chemical Transformations Tianjin300192 China Institute of New Energy Materials School of Materials Science and Engineering Tianjin University Tianjin300072 China

Highly chemo- and regioselective semihydrogenation of alkynes is significant and challenging for the synthesis of functionalized alkenes. Here, a sequential self-template method is used to synthesize amorphous palladium sulfide nanocapsules (PdSxANCs), which enables electrocatalytic semihydrogenation of terminal alkynes in H2O with excellent tolerance to easily reducible groups (e.g., C-I/Br/Cl, C═O) and the metal center deactivating skeletons (e.g., quinolyl, carboxyl, and nitrile). Mechanistic studies demonstrate that specific σ-alkynyl adsorption via terminal carbon and negligible alkene adsorption on isolated Pd2+sites ensure successful synthesis of various alkenes with outstanding time-irrelevant selectivity in a wide potential range. The key hydrogen and carbon radical intermediates are validated by electron paramagnetic resonance and high-resolution mass spectrometry. Gram-scale synthesis of 4-bromostyrene and expedient preparation of deuterated alkene precursors and drugs with D2O show promising applications. Impressively, PdSxANCs can be applied to the prevailing thermocatalytic semihydrogenation of functionalized alkyne using H2 © 2022 American chemical Society. All rights reserved.

关键词： Palladium compounds

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High sulfur loading and shuttle inhibition of advanced sulfur cathode enabled by graphene network skin and N,P,F-doped mesoporous carbon interfaces for ultra-stable lithium sulfur battery

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Nano Research Energy 2023年第1期2卷 148-156页

作者： Haotian Liu Fan Liu Zehua Qu Jieling Chen Hui Liu Yiqing Tan Jiabao Guo Yan Yan Shuang Zhao Xinsheng Zhao Xinming Nie Xin Ma Zengxia Pei Mingkai Liu School of Chemistry&Materials Science Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional MaterialsJiangsu Normal UniversityXuzhou 221116China School of Physics and Astronomy Sun Yat-sen UniversityZhuhai 519082China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200433China School of Physics and Electronic Engineering Jiangsu Normal UniversityXuzhou 221116China School of Chemistry and Materials Science Nanjing University of Information Science and TechnologyNanjing 210044China School of Chemical and Biomolecular Engineering The University of SydneySydneyNew South Wales 2006Australia

Achieving high loading of active sulfur yet rational regulating the shuttle effect of lithium polysulfide(LiPS)is of great significance in pursuit of high-performance lithium-sulfur(Li-S)***,we develop a free-standing graphene nitrogen(N),phosphorus(P)and fluorine(F)co-doped mesoporous carbon-sulfur(G-NPFMC-S)film,which was used as a binder-free cathode in Li-S *** developed mesoporous carbon(MC)achieved a high specific surface area of 921 m^(2)·g^(-1)with a uniform pore size distribution of 15 *** inserted graphene network inside G-NPFMC-S cathode can effectively improve its electrical conductivity and simultaneously restrict the shuttle of LiPS.A high sulfur loading of 86%was achieved due to the excellent porous structures of graphene-NPFMC(G-NPFMC)*** implemented as a freestanding cathode in Li-S battery,this G-NPFMC-S achieved a high specific capacity(1,356 mAh·g^(-1)),favorable rate capability,and long-term cycling stability up to 500 cycles with a minimum capacity fading rate of 0.025%per cycle,outperforming the corresponding performances of NPFMC-sulfur(NPFMC-S)and MC-sulfur(MC-S).These promising results can be ascribed to the featured structures that formed inside G-NPFMC-S film,as that highly porous NPFMC can provide sufficient storage space for the loading of sulfur,while,the N,P,F-doped carbonic interface and the inserted graphene network help hinder the shuttle of LiPS via chemical adsorption and physical barrier *** proposed unique structure can provide a bright prospect in that high mass loading of active sulfur and restriction the shuttle of LiPS can be simultaneously achieved for Li-S battery.

关键词： lithium sulfur battery high sulfur loading shuttle inhibition heteroatoms doped interface graphene network barrier

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“Three‐in‐one”strategy:Heat regulation and conversion enhancement of a multifunctional separator for safer lithium-sulfur batteries

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Carbon Energy 2023年第11期5卷 54-67页

作者： Kaiping Zhu Luhe Li Pan Xue Jun Pu Liyun Wu Gengde Guo Ran Wang Ye Zhang Huisheng Peng Guo Hong Qiang Zhang Yagang Yao National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional MaterialsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjingChina Key Laboratory of Functional Molecular Solids Ministry of EducationCollege of Chemistry and Materials ScienceAnhui Normal UniversityWuhuChina State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceLaboratory of Advanced MaterialsFudan UniversityShanghaiChina Department of Materials Science and Engineering College of EngineeringCity University of Hong KongHong KongChina Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijingChina

The safety problems encountered with lithium–sulfur batteries(LSBs)hinder their development for practical ***,a highly thermally conductive separator was constructed by cross‐weaving super‐aligned carbon nanotubes(SA‐C)on super‐aligned boron nitride@carbon nanotubes(SA‐BC)to create a composite film(SA‐BC/SA‐C).This separator was used to fabricate safe LSBs with improved electrochemical *** highly aligned separator structure created a uniform thermal field that could rapidly dissipate heat accumulated during continuous operation due to internal resistance,which prevented the development of extremely high *** array of boron nitride nanosheets endowed the composite separator with a large number of adsorption sites,while the highly graphitized carbon nanotube skeleton accelerated the catalytic conversion of high‐valence polysulfides into low‐valence *** arrayed molecular brush design enabled the regulation of local current density and ion flux,and considerably alleviated the growth of lithium dendrites,thus promoting the smooth deposition of Li ***,a battery constructed with the SA‐BC/SA‐C separator showed a good discharge capacity of 685.2 mAh g−1 over 300 cycles(a capacity decay of 0.026%per cycle)at 2 C and 60°***“three‐in‐one”multifunctional separator design strategy constitutes a new path forward for overcoming the safety problems of LSBs.

关键词： conversion enhancement heat regulation high safety lithium-sulfur batteries multifunctional separator

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Gelatin methacryloyl granular scaffolds for localized mRNA delivery

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Aggregate 2024年第2期5卷 386-400页

作者： Bruna Gregatti Carvalho Aya Nakayama Hiromi Miwa SangWon Han Lucimara Gaziola de la Torre Dino Di Carlo Junmin Lee Han-Jun Kim Ali Khademhosseini Natan Roberto de Barros Terasaki Institute for Biomedical Innovation(TIBI) Los AngelesCaliforniaUSA Department of Materials and Bioprocess Engineering School of Chemical EngineeringUniversity of Campinas(UNICAMP)CampinasBrazil Department of Bioengineering University of California at Los Angeles(UCLA)Los AngelesCaliforniaUSA Department of Biophysics Paulista School of MedicineFederal University of São Paulo(UNIFESP)CampinasBrazil Department of Materials Science and Engineering Pohang University of Science and Technology(POSTECH)PohangRepublic of Korea Institute for Convergence Research and Education in Advanced Technology Yonsei UniversityIncheonRepublic of Korea College of Pharmacy Korea UniversityPohangRepublic of Korea Centre for Biomaterials Cellular and Molecular Theranostics(CBCMT)Vellore Institute of Technology(VIT)VelloreIndia

Messenger RNA(mRNA)therapy is the intracellular delivery of mRNA to produce desired therapeutic *** strategies for local mRNA delivery is still required where direct intra-articular injections are inappropriate for targeting a specific *** mRNA delivery efficiency depends on protecting nucleic acids against nuclease-mediated degradation and safe site-specific intracellular ***,novel mRNA-releasing matrices based on RGD-moiety-rich gelatin methacryloyl(GelMA)microporous annealed particle(MAP)scaffolds are *** concentration in aerogel-based microgels(μgels)produced through a microfluidic process,MAP stiffnesses,and microporosity are crucial parameters for cell adhesion,spreading,and *** being loaded with mRNA complexes,MAP scaffolds composed of 10%GelMAμgels display excellent cell viability with increasing cell infiltration,adhesion,proliferation,and gene *** intracellular delivery is achieved by the sustained release of mRNA complexes from MAP scaffolds and cell adhesion on mRNA-releasing *** findings highlight that hybrid systems can achieve efficient protein expression by delivering mRNA complexes,making them promising mRNA-releasing biomaterials for tissue engineering.

关键词： GelMA lipid-based nanocarriers MAP scaffolds microfluidics mRNA

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Two-Dimensional Conductive Metal-Organic Framework Reinforced Spinterface in Organic Spin Valves

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CCS Chemistry 2024年第1期6卷 208-217页

作者： Xiaoyu Song Chao Jin Hongliang Chen Shuaishuai Ding Zhongyi Liu Yang Li Xiaoli Yan Wenbo Mi Long Chen Wenping Hu Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic ScienceTianjin UniversityTianjin 300072 School of Chemistry and Chemical Engineering Yantai UniverisityYantaiShandong 264005 Tianjin Key Laboratory of Low Dimensional Materials Physics and Processing Technology School of ScienceTianjin UniversityTianjin 300072 State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchunJilin 130012

Interface engineering in device fabrication is a significant but complicated *** great successes have been achieved by conventional physical in situ or ex situ methods,it still suffers from complicated *** this work,we present a facile method for fabricating phthalocyanine(Pc)-based two-dimensional conductive metal–organic framework(MOF)*** on PcM-Cu(M=Ni,Cu,H_(2))MOF films,spin valves with a vertical configuration of La_(0.67)Sr_(0.33)MnO_(3)/PcM-Cu MOFs/Co were constructed successfully,and exhibited notably high negative magnetoresistance(MR)up to -22% at 50 *** penetrated Co atoms coordinated with the dehydrogenated hydroxy groups in the MOFs resulting in an antiferromagnetic layer of the PcM-Cu-Co hybrid ***,a significant exchange bias effect was demonstrated at the PcM-Cu MOF/Co interface,beneficial for the MR ***,our present study provides new insights into developing high-performance organic spin valves via de novo molecular design.

关键词： two-dimensional conductive metal-organic framework two-dimensional polymer phthalocyanine spintronics organic spin valve

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High-Performance D-A Copolymer Donor Based on Difluoroquinoxaline A-Unit with Alkyl-Chlorothiophene Substituents for Polymer Solar Cells

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CCS Chemistry 2023年第10期5卷 2378-2388页

作者： Can Zhu Ke Hu Lei Meng Xiaolei Kong Wenbin Lai Shucheng Qin Beibei Qiu Jinyuan Zhang Zhanjun Zhang Yilei Wu Xiaojun Li Yongfang Li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190 School of Chemical Science University of Chinese Academy of SciencesBeijing 100049 Key Laboratory of Solid State Optoelectronic Devices of Zhejiang Province College of Physics and Electronic Information EngineeringZhejiang Normal UniversityJinhuaZhejiang 321004 Department of Chemical Engineering Stanford UniversityStanfordCalifornia 94305-4125 Laboratory of Advanced Optoelectronic Materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123

Side chain engineering with fluorine substitution is widely used to enhance photovoltaic performance of polymer donors in the research field of polymer solar cells(PSCs).However,fluorine substitution has disadvantages of complicated synthesis and high ***,we synthesized a novel D-A copolymer donor PBQ9 based on difluoroquinoxaline A-unit with chlorine substitution on its alkyl-thiophene side chains instead of fluorine substitution in the polymer donor PBQ6,which greatly shortens the synthetic route and reduces the ***,the optimized binary PSC with PBQ9 as polymer donor and m-TEH as acceptor demonstrated a high power conversion efficiency(PCE)of 18.81%(certified PCE of 18.33%by National Institute of Metrology,China)with a high fill factor of 80.59%,and the photovoltaic performance of the PSCs is insensitive to the different batches of the polymer *** results indicate that PBQ9 is a high-performance polymer donor and that chlorine substitution is an effective strategy to improve photovoltaic performance and reduce the cost of polymer donors.

关键词： D-A copolymer donors polymer solar cells difluoroquinoxaline A-unit chlorothiophene substituents

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Making Passive Daytime Radiative Cooling Metafabrics on a Large Scale

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Advanced Fiber materials 2022年第1期4卷 3-4页

作者： Shaowu Pan Huisheng Peng State Key Laboratory for Modifcation of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua University2999 Renmin RoadShanghai 201620China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Scienceand Laboratory of Advanced MaterialsFudan UniversityShanghai 200438China

Cooling is pervasive in modern society and contributes signifcantly to global energy use.A hierarchical-morphology metafabric has been recently reported to show efcient passive daytime radiative cooling ability and may be also easily scaled up by industrial textile manufacturing *** above study represents an important advance in personal thermal management through the use of intelligent garments.

关键词： technology. hierarchical intelligent

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Synthesis of Co_(4)S_(3)/Co_(9)S_(8) nanosheets and comparison study toward the OER properties induced by different metal ion doping

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Chinese chemical Letters 2022年第3期33卷 1395-1402页

作者： Fenghua Chen Zhaoqian Zhang Weiwei Liang Xiaoyun Qin Zhen Zhang Liying Jiang College of Materials and Chemical Engineering Zhengzhou University of Light IndustryZhengzhou 450002China Tianjin Key Laboratory of Molecular Optoelectronic Department of Chemistry School of ScienceTianjin UniversityTianjin 300072China School of Electrical and Information Engineering Zhengzhou University of Light IndustryZhengzhou 450002China

Regulation of chemical composition and nanostructure, such as the introduction of dopant into two-dimensional nanomaterials, is a general and valid strategy for the efficient electrocatalyst design. In this work, Co_(4)S_(3)/Co_(9)S_(8) nanosheets, with an ultrathin layer structure, were successfully synthesized via an efficient solvothermal process combined with ultrasonic exfoliation. Different metal ions (M = Fe^(3+), Cr^(3+), Mn^(2+) and Ni^(2+)) were then doped by a simple cation exchange method and the effects of different dopants on the OER activities of Co_(4)S_(3)/Co_(9)S_(8) NS were further investigated in alkaline media. The corresponding results implied that M-doped Co_(4)S_(3)/Co_(9)S_(8) NS (M = Fe^(3+), Cr^(3+), Mn^(2+) and Ni^(2+)) exhibited different electrocatalytic properties. Evidenced by XPS spectra, the different OER activities were mainly aroused by the redistribution of charge at the interface due to an electronic interaction between the doped metal ions and Co_(4)S_(3)/Co_(9)S_(8) NS.

关键词： Chalcogenides chemical synthesis Catalytic properties Doping Nanosheets OER

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