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Cell-Penetrating Peptides Transport Red Phosphorescence Nanoparticles Sensitized by Thermally Activated Delayed Fluorescent Polymer for Time-Resolved Luminescence Imaging

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SSRN 2023年

作者： Luo, Zihan Zhou, Zhuofan Pan, Yiwen Yuan, Huanxiang Hong, Yi Zhu, Zece Xu, Li Department of Pharmacy Hubei University of Chinese Medicine Wuhan430065 China Department of Chemistry College of Chemistry and Materials Engineering Beijing Technology and Business University Beijing100048 China Wuhan Textile University Department of Chemistry and Chemical Engineering State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan4320200 China

Ir complexes have received considerable attention in time-resolved luminescence imaging due to their long luminescence lifetimes. In this study, we devised and synthesized a red phosphorescent nanoparticle comprised of an Ir complex in a straightforward manner, significantly improving its bioimaging efficacy. The PMD-Ir quantum yield was elevated through energy transfer from the thermally activated delayed fluorescent (TADF) polymer PCzDP-20 inside the nanoparticle. Additionally, we successfully self-assembled a cell-penetrating peptide (CPP) F6G6(rR)3R2 (FR-20) into well-dispersed nanoparticles with PMD-Ir and PCzDP-20 in an aqueous solution. The resulting nanoparticle has good water dispersibility and cellular uptake rate, making it more effective for time-resolved luminescence imaging. © 2023, The Authors. All rights reserved.

关键词： Energy transfer

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Plasma-electrified up-carbonization for low-carbon clean energy

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Carbon Energy 2023年第1期5卷 25-70页

作者： Rusen Zhou Yadong Zhao Renwu Zhou Tianqi Zhang Patrick Cullen Yao Zheng Liming Dai Kostya(Ken)Ostrikov School of Food and Pharmacy Zhejiang Ocean UniversityZhoushanChina School of Chemistry and Physics Centre for Materials ScienceCentre for Clean Energy Technologies and PracticesCentre for Waste-Free-WorldQueensland University of Technology(QUT)BrisbaneQueenslandAustralia State Key Laboratory of Electrical Insulation and Power Equipment Center for Plasma BiomedicineXi'an Jiaotong UniversityXi'anShaanxiChina School of Chemical and Biomolecular Engineering The University of SydneySydneyNew South WalesAustralia School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideSouth AustraliaAustralia School of Chemical Engineering Australian Carbon Materials Centre(A-CMC)University of New South WalesSydneyNew South WalesAustralia

Low-value,renewable,carbon-rich resources,with different biomass feedstocks and their derivatives as typical examples,represent virtually inexhaustive carbon sources and carbon-related energy on *** conversion to higher-value forms(referred to as“up-carbonization”here),these abundant feedstocks provide viable opportunities for energy-rich fuels and sustainable platform chemicals ***,many of the current methods for such up-carbonization still lack sufficient energy,cost,and material efficiency,which affect their economics and carbon-emissions *** external electricity precisely delivered,discharge plasmas enable many stubborn reactions to occur under mild conditions,by creating locally intensified and highly reactive *** technology emerges as a novel,versatile technology platform for integrated or stand-alone conversion of carbon-rich *** plasma-based processes are compatible for integration with increasingly abundant and cost-effective renewable electricity,making the whole conversion carbon-neutral and further paving the plasma-electrified upcarbonization to be performance-,environment-,and *** the chief interest in this emerging area,no review article brings together the state-of-the-art results from diverse disciplines and underlies basic mechanisms and chemistry *** such,this review aims to fill this gap and provide basic guidelines for future research and transformation,by providing an overview of the application of plasma techniques for carbon-rich resource conversion,with particular focus on the perspective of discharge plasmas,the fundamentals of why plasmas are particularly suited for upcarbonization,and featured examples of plasma-enabled resource *** parallels drawn and specificity highlighted,we also discuss the technique shortcomings,current challenges,and research needs for future work.

关键词： carbon-rich resources discharge plasmas low-carbon energy power-to-X process electrification

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Evolution of electromechanical properties in Fe-doped(Pb,Sr)(Zr,Ti)O_(3) piezoceramics

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Journal of advanced Ceramics 2021年第3期10卷 587-595页

作者： Chuan CHEN Yan WANG Zong-Yue LI Chun LIU Wen GONG Qing TAN Bing HAN Fang-Zhou YAO Ke WANG Joint Laboratory of Electric Power Intelligent Sensing Technology and Application Department of Sensing Technology for Electric PowerGlobal Energy Interconnection Research Institute Co.Ltd.Future Science ParkBeijing 102209China China Aerospace Science and Industry Corporation Beijing 100048China Naqu Branch of Tibet Electric Limited Company Naqu 852000China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Center of Advanced Ceramic Materials and Devices Yangtze Delta Region Institute of Tsinghua UniversityZhejiang 314006China Beijing Advanced Innovation Center for Materials Genome Engineering State Key Laboratory for Advanced Metals and MaterialsUniversity of Science and Technology BeijingBeijing 100083China Department of Orthodontics&National Engineering Laboratory for Digital and Material Technology Peking University School and Hospital of StomatologyBeijing 100081China State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong UniversityXi'an 710049China Foshan(Southern China)Institute for New Materials Foshan 528200China

Defects in acceptor-doped perovskite piezoelectric materials have a significant impact on their electrical ***,the defect mediated evolution of piezoelectric and ferroelectric properties of Fe-doped(Pb,Sr)(Zr,Ti)O_(3)(PSZT-Fe)piezoceramics with different treatments,including quenching,aging,de-aging,and poling,was investigated *** vacancies with a cubic symmetry are preserved in the quenched PSZT-Fe ceramics,rendering them robust ferroelectric *** the aged PSZT-Fe polycrystals,defect dipole between Fe dopant and oxygen vacancy has the same orientation with spontaneous polarization Ps,which enables the reversible domain switching and hence leads to the emergence of pinched polarization hysteresis and recoverable strain *** the defect dipoles can be gradually disrupted by bipolar electric field cycling,once again endowing the aged materials with representative ferroelectric *** the poled PSZT-Fe polycrystals,the defect dipoles are reoriented to be parallel to the applied poling field,and an internal bias field aligning along the same direction emerges simultaneously,being responsible for asymmetric hysteresis loops.

关键词： lead-zirconate-titanate(PZT) piezoelectric acceptor defect engineering electromechanical properties

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Microstructural Evolution of Defects Under Proton Irradiation in Porous Cu

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SSRN 2024年

作者： Li, Honglin Wang, Hao Huang, Zhifeng Wen, Pin Yin, Guanchao Chen, Fei Hubei Longzhong Laboratory Xiangyang441106 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China International School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics School of Science Wuhan University of Technology Wuhan430070 China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou730000 China

The high specific strength and exceptional thermal insulating properties of porous metals make them an ideal choice for aerospace structural components and thermal insulation materials. However, in the space environment, proton irradiation leads to the formation of voids, bubbles, and dislocation loops, significantly compromising their physical and mechanical properties. To date, there has been limited attention to the radiation resistance properties in research related to porous metals. This study conducted proton irradiation experiments with a total dose of 1×1017 ions/cm2 on porous Cu. This study discusses and explains the irradiation-induced damage characteristics on the surface of porous Cu before and after proton irradiation. This provides insights into the radiation damage mechanisms within the porous Cu ligaments and the hydrogen release behavior on the ligament surface. Cascade recoil and collision-induced thermal spike effects modify material defect characteristics and crystal structure. This study elucidates the defect evolution mechanism of porous materials under proton irradiation, offering new insights for the design of other radiation-resistant porous materials as protective materials for future advanced space probes. © 2024, The Authors. All rights reserved.

关键词： Radiation damage

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Study on linear segregation of zl205a alloy 6th

Study on linear segregation of zl205a alloy

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6th International Conference on Mechanical Structures and Smart materials, ICMSSM 2020

作者： Hu, Wu Zhu, Ke Wang, Meng Huang, Weidong Zeng, Jianmin Key Laboratory of Nonferrous Materials and New Processing Technology Guangxi University Nanning China State Key Laboratory of Solidification Technology Northwest Polytechnic University Xian China

ISBN: (纸本)9783035736861

Linear segregation of high strength aluminum alloy ZL205A castings were studied by X-ray Nondestructive testing, scanning electron microscope and energy dispersive spectrometer. It is found that the linear segregation occurs at the large wall thickness of the casting and/or at the place where the wall thickness is in transition. Segregation element is mainly Cu, which exists as compound θ(Al2Cu) phase. The formation of linear segregation is related to the flow of Cu-rich melt in the late solidification period, while the occurrence of thermal cracks promotes the formation of linear segregation. The formation of linear segregation of the casting can be effectively prevented by eliminating hot spots of the casting, refining crystal grains and increasing solidification speed of the casting. © 2021 Trans Tech Publications Ltd, Switzerland Online: 2021-02-01.

关键词： Solidification

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Excellent Strength-Ductility Synergy Properties of Mg-Sn-Zn-Zr Alloy Mediated by a Novel Differential Thermal Ecap (Dt-Ecap)

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SSRN 2024年

作者： Zhou, Tianshui Wang, Bing Zhang, Minjie Li, Yaqin Hu, Shiwen Li, Xiaoqiang Liu, Dexue State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of Technology Lanzhou730050 China School of Materials Science and Engineering Lanzhou University of Technology Lanzhou730050 China

The application of structural magnesium (Mg) alloys in engineering industry is usually impeded by the challenge of strength-ductility synergy. In this study, a considerable ductility (elongation, ~27-33%) and high ultimate tensile strength (UTS, ~340-370 MPa) Mg-Sn-Zn-Zr alloy was developed by a combination of aging, extrusion and novel differential thermal equal-channel angular pressing (DT-ECAP) process. Both dislocation slip and (double) cross-slip are primary deformation mechanisms of the alloy. Furthermore, jogs or kinks induced by cross-slip were also observed in the alloy before and after tensile test, indicating good deformability. More importantly, based on the two-beam bright-filed TEM under three g conditions, multiple slip systems containing pyramidal , prismatic and basal dislocations were activated to accommodate both c-axis and a-axis strains of the alloy, leading to superior work-hardening effect and thus superb ductility. On the other hand, DT-ECAP process was in favor of grain refinement and ultrafine second phases with ~54-63 nm were precipitated due to high density of defects. Therefore, the principal strengthening mechanisms of DT-ECAPed alloys were grain boundary strengthening, precipitation strengthening and dislocation strengthening. The contributions of the three strengthening mechanisms to TYSs of second pass (2P) and forth pass (4P) alloys are ~77 MPa and ~66 MPa, ~30 MPa and ~27 MPa, ~34 MPa and ~27 MPa, respectively. The current work develops a novel DT-ECAP process for preparing a new Mg-Sn-Zn-Zr alloy with strength-ductility synergy and provides a strategy to break the strength-ductility tradeoff dilemma of rare-earth-free Mg alloy. © 2024, The Authors. All rights reserved.

关键词： Equal channel angular pressing

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High‑Performance and Long‑Term Stability of MXene/PEDOT:PSS‑Decorated Cotton Yarn for Wearable Electronics Applications

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advanced Fiber materials 2024年第2期6卷 367-386页

作者： Guifang He Fanggang Ning Xiang Liu Yaxin Meng Zhiwei Lei Xianda Ma Mingwei Tian Xuqing Liu Xiansheng Zhang Xueji Zhang Lijun Qu College of Textiles and Clothing and Research Center for Intelligent and Wearable Technology and State Key Laboratory of Bio‑Fibers and Eco‑Textiles and Intelligent Wearable Engineering Research Center of Qingdao Qingdao UniversityQingdao 266071People’s Republic of China College of Textile and Fashion Xinjiang UniversityUrumqi 830017People’s Republic of China State Key Laboratory of Solidification Processing and Center of Advanced Lubrication and Seal Materials Northwestern Polytechnical UniversityXi’an 710072People’s Republic of China Shandong Laboratory of Yantai Advanced Materials and Green Manufacture Yantai 264006People’s Republic of China School of Biomedical Engineering and Health Science Center Shenzhen UniversityShenzhen 518060People’s Republic of China

High-performance wearable electronics are highly desirable for the development of body warming and human health monitoring *** the present study,high electrically conductive and photothermal cotton yarns(CYs)with long-term stability were prepared as wearable *** process contains back-to-back decoration of the fiber surface by Ti_(3)C_(2)T_(x)(MXene)nanosheets,and the poly(3,4-ethylenedioxythiophene)polystyrene sulfonate(PEDOT:PSS)composite,to form a core–shell structure(MP@CY).The addition of a small amount of PEDOT:PSS plays a dual role of protecting the MXene from oxidation and increasing the electrical *** resulting yarn exhibits excellent electrical conductivity(21.8Ωcm^(−1)),rapid electrothermal response,and superb photothermal conversion capability,supporting its application as an optical/electrical dual-drive heater.A three-dimensional(3D)honeycomb-like textile wearable heater based on MP@CY as weft yarn demonstrates outstanding electrical thermal properties(0–2.5 V,30–196.8°C)and exceptional photothermal conversion(130 mW cm^(−2),64.2°C).Using an Internet of Things(IoT)microcontroller and Espressif(ESP)electronics chip,which are combined with wireless fidelity(Wi-Fi)and smartphone,real-time visualization and precise control of the temperature interface can be ***,MP@CY-based knitted sensors,obtained by hand-knitting,are utilized for monitoring human movement and health,exhibiting high sensitivity and long-term cycling stability.

关键词： Long-term stability Conductive cotton yarn MXene PEDOT:PSS Wearable electronics devices

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Synthesis of amorphous Pd-based nanocatalysts for efficient alcoholysis of styrene oxide and electrochemical hydrogen evolution

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Nano Research 2023年第4期16卷 4650-4655页

作者： Yiyao Ge Jingjie Ge Biao Huang Xixi Wang Guigao Liu Xiang-Huan Shan Lu Ma Bo Chen Guanghua Liu Songmo Du An Zhang Hongfei Cheng Qingbo Wa Shiyao Lu Lujiang Li Qinbai Yun Kuo Yuan Qinxin Luo Zhichuan J.Xu Yonghua Du Hua Zhang Department of Chemistry City University of Hong KongHong KongChina Hong Kong Branch of National Precious Metals Material Engineering Research Center(NPMM) City University of Hong KongHong KongChina Shenzhen Research Institute City University of Hong KongShenzhen 518057China Department of Chemical and Biological Engineering HKUST Jockey Club Institute for Advanced Study&Energy InstituteThe Hong Kong University of Science and TechnologyHong KongChina School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore Department of Chemistry University of Science and Technology of ChinaHefei 230026China National Synchrotron Light Source II Brookhaven National LaboratoryUptonNew York 11973USA State Key Laboratory of New Ceramics&Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Amorphous nanomaterials with long-range disordered structures could possess distinct properties and promising applications,especially in catalysis,as compared with their conventional crystalline *** is imperative to achieve the controlled preparation of amorphous noble metal-based nanomaterials for the exploration of their phase-dependent ***,we report a facile wet-chemical reduction strategy to synthesize various amorphous multimetallic Pd-based nanomaterials,including PdRu,PdRh,and *** phase-dependent catalytic performances of distinct Pd-based nanomaterials towards diverse catalytic applications have been ***,the usage of PdRu nanocatalysts with amorphous and crystalline face-centered cubic(fcc)phases can efficiently switch the ring-opening route of styrene oxide to obtain different products with high selectivity through alcoholysis reaction and hydrogenation reaction,***,when used as an electrocatalyst for hydrogen evolution reaction(HER),the synthesized amorphous PdRh nanocatalyst exhibits low overpotential and high turnover frequency values,outperforming its crystalline fcc counterpart and most of the reported Pd-based HER electrocatalysts.

关键词： amorphous nanomaterials Pd-based nanocatalysts phase engineering of nanomaterials ring-opening reaction of styrene oxide electrocatalytic hydrogen evolution

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Single Ti atoms coupled with Ti-O clusters enable low temperature hydrogen cycling by sodium alanate

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Rare Metals 2024年第6期43卷 2671-2681页

作者： Zhuang-He Ren Xin Zhang Wen-Xuan Zhang Zhen-Guo Huang Li-Mei Yang Ya-Xiong Yang Zheng-Long Li Juan Li Wen-Ping Sun Ming-Xia Gao Hong-Ge Pan Yong-Feng Liu State Key Laboratory of Silicon and Advanced Semiconductor Materials Zhejiang UniversityHangzhou 310027China School of Materials Science and Engineering Zhejiang UniversityHangzhou 310058China School of Civil&Environmental Engineering.University of Technology Sydney Sydney2007 NSWAustralia Institute of Science and Technology for New Energy Xi'an Technological UniversityXi'an 710021China College of Materials Science and Engineering Zhejiang University of TechnologyHangzhou 310014China

Ti-based catalysts are known to improve the hydrogen storage performance of NaAlH4by facilitating the dissociation/recombination of H-H and Al-H *** catalytic activity of metallic Ti species strongly depends on its particle size and *** clusters and even single atoms are therefore highly desirable,but their controllable fabrication has been highly *** rein,we demonstrate a novel facile sonochemical synthesis of a Ti-O clusters featuring single Ti atom catalyst at room *** reducing TiCl_(4)by MgBu_(2)with ultrasound instead of heating as driving force,numerous single Ti atoms coupled with Ti-O clusters with Ti loading on graphene(Ti_(1)/Ti-O@G)up to 22.6 wt%have been successfully *** prepared Ti_(1)/Ti-O@G contributes high reactivity and superior catalytic activity,therefore enabling full dehydrogenation of NaAlH_(4)at 80℃in thermogravimetric mode and re-hydrogenation at 30℃and 10 MPa with 4.9 wt% H_(2).This fact indicates for the first time that single Ti atom catalyst with high loading is highly effective in catalyzing hydrogen cycling of NaAlH4at remarkably reduced temperatures.

关键词： Hydrogen storage Nanocatalysis Transition metals Single Ti atoms NaAlH_(4)

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Twin crystal structured Al-10 wt.% Mg alloy over broad velocity conditions achieved by high thermal gradient directional solidification

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Journal of materials Science & technology 2021年第12期71卷 152-162页

作者： Luyan Yang Shuangming Li Kai Fan Yang Li Yanhui Chen Wei Li Deli Kong Pengfei Cao Haibo Long Ang Li Institute of Microstructure and Properties of Advanced Materials Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing100124China State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an710072China Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons Forschungszentrum Jülich52428JülichGermany

Twin crystal structured Al-10 wt.% Mg alloys that were grown over a broad solidification velocity range were prepared and studied for the first *** high thermal gradient(G)and growth velocity(V)of directional solidification resulted in the dominant solidification of twins:the twinned dendrite trunks at constant high Vs curved in the G direction with large angles in 7 mm diameter crucibles and invaded regular columnar grains because of a distinct kinetics growth *** deceleration experiments were designed to produce twin crystals that evolved with lower values of V(100,10,and 0.5μm/s)and had a structural coarsening *** cell growth in the absence of arms occurred at a growth velocity of 10μm/s.A coherency loss was observed at a growth velocity of 0.5μm/s with straight coherent twin boundaries turning into curved incoherent *** theoretical analyses were performed to understand the structural evolution of the *** results demonstrate the possibility of producing dense and controlled twin crystals in the Al-Mg system under most industrial production conditions;thus,this approach can be a new structural choice for designing Al-Mg-based alloys that have widespread commercial applications.

关键词： Directional solidification Aluminum alloy Microstructural evolution Feathery crystals Twinned dendrites

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