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Sulfanion-initiated open-vessel anionic ring-opening polymerization of N-sulfonyl aziridines

science china Chemistry 2021年第10期64卷 1778-1785页

作者： Meng Huo Yawen Bian Chunyang Yu Gansheng tong Chongyin zhang Xinyuan Zhu School of Chemistry'and Chemical engineering Frontiers Science Center for Transformative MoleculesShanghai Key Laboratory of Electrical Insulation and Thermal AgingShanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of Surface&Interface science of polymer materials of Zhejiang Province Department of ChemistryZhejiang Sci-Tech UniversityHangzhou 310018China shanghai Aerospace Equipments Manufacturer Co. Ltd.Shanghai Engineering Research Center of Specialized Polymer Materials for AerospaceShanghai 200245China

Anionic ring-opening polymerization(AROP)of N-sulfonyl aziridines is an important synthetic route to linear polyethyleneimine(PEI)and its *** most cases,inert atmosphere and dry solvent were needed because of the oxygen-and water-sensitive initiators/catalysts ***,the AROP of N-sulfonyl aziridines that can be entirely operated in air atmosphere is still a challenging ***,we report a series of sulfanions,including xanthates,dithiocarbamates,dithiobenzoates,thioacetates,and thiolates,as the initiators for the AROP of N-sulfonyl *** to their good stability,openvessel polymerization was achieved with high livingness,affording a range of well-definedα-,ω-telechelic poly(N-sulfonyl aziridine)homopolymers and block copolymers with narrow dispersities and tunable molecular ***α-end group of these polyaziridines was readily converted to thiol group,which enabled further post-polymerization functionalization with benzyl acrylate and poly(ethylene glycol)via thiol-ene click *** establishment of open-vessel sulfanion-initiated AROP of N-sulfonyl aziridines thus lays a solid foundation for the bulk preparation and application of poly(N-sulfonyl aziridine)s and PEI derivatives.

关键词： anionic ring-opening polymerization sulfanion open-vessel N-sulfonyl aziridines

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Waveform simulation in PandaX-4T

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chinese Physics C 2024年第7期48卷 1-13页

作者：李家富阿卜杜萨拉姆薄子豪陈葳谌勋程晨成赵侃崔祥仪樊英杰方德清耿立升 Karl Giboni 郭绪元韩晨成韩柯何昶达何金荣黄迪黄俊挺黄周侯汝全侯钰季向东巨永林李晨翔李名川李帅杰李涛林箐刘江来陆聪聪芦晓盈罗棱尹罗云阳马文博马余刚冒亚军孟月宁旭阳庞彬宇祁宁春钱志成任祥祥 Nasir Shaheed 尚晓凤邵熙元申国防司琳孙文良谈安迪陶奕王安庆王萌王秋红王少博王思广王为王秀丽王旭王舟魏月环武蒙蒙邬维浩吴渊肖梦姣肖翔燕斌斌阎玺宇杨勇喻纯旭袁影苑哲运有辉曾鑫宁张敏桢张鹏张世博张澍张涛张威张洋张瀛心张园园赵力周济芳周宁周小朋周永周钰博周知震 School of Physics and Astronomy Shanghai Jiao Tong UniversityKey Laboratory for Particle Astrophysics and Cosmology(MoE)Shanghai Key Laboratory for Particle Physics and CosmologyShanghai 200240China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China department of Modern Physics University of Science and Technology of ChinaHefei 230026China School of Physics Beihang UniversityBeijing 102206China International Research Center for Nuclei and Particles in the Cosmos&Beijing Key Laboratory of Advanced Nuclear materials and Physics Beihang UniversityBeijing 100191China School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China School of Physics Peking UniversityBeijing 100871China Yalong River Hydropower Development Company Ltd.288 Shuanglin RoadChengdu 610051China Research Center for Particle science and Technology Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237China Key Laboratory of Particle Physics and Particle Irradiation of Ministry of Education Shandong UniversityQingdao 266237China department of Physics University of MarylandCollege ParkMaryland 20742USA Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghai200240China School of Mechanical engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Physics Sun Yat-Sen UniversityGuangzhou 510275China Sino-French Institute of Nuclear engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China School of Physics and Astronomy Sun Yat-Sen UniversityZhuhai 519082China School of Physics Nankai UniversityTianjin 300071China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China shanghai jiao tong university Sichuan Research Institute Chengdu 610213China SJTU Paris Elite Institute of Technology Shanghai Jiao Tong UniversityShanghai 200240China department of Physics Yantai UniversityYantai 264005Ch

Signal reconstruction through software processing is a crucial component of the background and signal models in the PandaX-4T experiment,which is a multi-tonne dark matter direct search *** accuracy of signal reconstruction is influenced by various detector artifacts,including noise,dark count of photomultiplier,photoionization of impurities in the detector,and other relevant *** this study,we presented a detailed description of a semi-data-driven approach designed to simulate a signal *** work provides a reliable model for the efficiency and bias of the signal reconstruction in the data analysis of *** comparing critical variables that relate to the temporal shape and hit pattern of the signals,we found good agreement between the simulation and data.

关键词： dark matter time projection chamber simulation

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Microstructure of Electrodeposited Cu Micro-cylinders in High-Aspect-Ratio Blind Holes and Crystallographic Texture of the Cu Overburden Film

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Journal of materials science & Technology 2016年第4期32卷 355-361页

作者： Yazhou zhang Guifu Ding hong Wang Ping Cheng National Key Laboratory of science and Technology on Micro/Nano Fabrication Department of Micro/Nano Electronics School of Electronic Informationand Electrical Engineering Shanghai Jiao Tong University Shanghai 200240 China

Microstructure and texture of electrodeposited Cu micro-cylinders in the blind hole play a vitally im- portant role in the electrical and mechanical properties of the three-dimensional （3-D） IC （integrated circuit）/Si integrations. In this paper, a new commercial additive system, which is specifically devel- oped for the high-aspect-ratio through-silicon-via （TSV） filling, was used to electrodeposit Cu in the blind holes. The microstructure of electrodeposited Cu micro-cylinder in the blind hole with a diameter of 40 μm and a depth of 140 μm was investigated by electron back-scattered diffraction （EBSD） technique. Grain size distribution of the Cu micro-cylinder in the blind hole differed from the bottom to the top. The grain boundaries contained a high fraction of Z3 CSL （coincident site lattice） boundaries. It has been reported that the Cu overburden film on the surface of the blind hole influenced the crystallographic orientation of Cu grains inside the damascene trench. So the effects of the current density and additive concentra- tion on the crystal structure of the overburden Cu film were also studied in this study. The experimental results indicated that the preferred orientation of the Cu overburden film changed from {111} to {220} when the current density increased from 2 to 80 mA cm-2. However, the effect of additives on the crystal structure of the Cu overburden film was dependent on the crystal structure of the seed layer.

关键词： Cu micro-cylinder electrodepositionElectron back-scattered diffraction (EBSD)Crystallographic orientationCu overburden film

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Ion conduction path in composite solid electrolytes for lithium metal batteries: from polymer rich to ceramic rich

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Frontiers in Energy 2022年第5期16卷 706-733页

作者： zhouyu zhang Hao CHEN Zhenglin HU Shoubin zhou Lan zhang Jiayan LUO Key Laboratory for Green Chemical Technology of the Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China shanghai Key Laboratory of Advanced High-Temperature materials and Precision Forming School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China Huafu High Technology Energy Storage Co. Ltd.Yangzhou 225600China CAS Key Laboratory of Green Process and engineering Beijing Key Laboratory of Ionic Liquids Clean ProcessState Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Solid-state electrolytes(SSEs)can address the safety issue of organic electrolyte in rechargeable lithium ***,neither polymer nor ceramic SSEs used alone can meet the demand although great progress has been made in the past few *** solid electrolytes(CSEs)composed of flexible polymers and brittle but more conducting ceramics can take advantage of the individual system for solid-state lithium metal batteries(SSLMBs).CSEs can be largely divided into two categories by the mass fraction of the components:“polymer rich”(PR)and“ceramic rich”(CR)systems with different internal structures and electrochemical *** review provides a comprehensive and in-depth understanding of recent advances and limitations of both PR and CR electrolytes,with a special focus on the ion conduction path based on polymer-ceramic interaction mechanisms and structural designs of ceramic fillers/*** addition,it highlights the PR and CR which bring the leverage between the electrochemical property and the mechanical ***,it further prospects the possible route for future development of CSEs according to their rational design,which is expected to accelerate the practical application of SSLMBs.

关键词： composite solid electrolytes active filler/framework ion conduction path interphase compatibility multilayer design

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Clean energy technology： materials, processes and devices for electrochemical energy conversion and storage

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Frontiers in Energy 2017年第3期11卷 233-235页

作者： hong YANG Junliang zhang Baolian YI department of Chemical & Biomolecular engineering University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA Institute of Fuel Cells School of Mechanical Engineering Shanghai Jiao Tong University Shanghai 200240 China Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China

Climate change is a major modern-day challenge that faces the human society. Developing clean energy technology requires near-term approaches and long- term strategy. A solution to meet the daunting challenge is for us to make a switch in energy use to various carbon-free, renewable sources. Due to the intermittency and geographical constraint of renewable energy supply, its broad application requires to develop smart energy storage and conversion technology. Distributed system, microgrid and clean vehicles are among the major society-level solutions that are actively considered. Electrochemical energy, if made in a highly efficient and clean manner, should greatly help in our ability to adapt to this change.

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Ultrafine ordered L1_(2)-Pt-Co-Mn ternary intermetallic nanoparticles as high-performance oxygen-reduction electrocatalysts for practical fuel cells

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Journal of Energy Chemistry 2024年第6期93卷 157-165,I0005页

作者： Enping Wang Liuxuan Luo Yong Feng Aiming Wu Huiyuan Li Xiashuang Luo Yangge Guo Zehao Tan Fengjuan Zhu Xiaohui Yan Qi Kang Zechao Zhuang Daihui Yang Shuiyun Shen Junliang zhang china-UK Low Carbon College Shanghai Jiao Tong UniversityShanghai 201306China Institute of Fuel Cells Key Laboratory for Power Machinery and Engineering of MOESchool of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China shanghai Tangfeng Energy Technology Co.Ltd. Shanghai 201306China State Key Laboratory of Advanced Chemical Power Sources Guizhou Meiling Power Sources Co.Ltd.Zunyi 563003GuizhouChina School of Chemistry and Chemical engineering Chongqing UniversityChongqing 400044China Institute of New Energy for Vehicles School of Materials Science and EngineeringTongji UniversityShanghai 201804China department of Chemical engineering Columbia UniversityNY 10027USA

The long-range periodically ordered atomic structures in intermetallic nanoparticles(INPs)can significantly enhance both the electrocatalytic activity and electrochemical stability toward the oxygen reduction reaction(ORR)compared to the disordered atomic structures in ordinary solid-solution alloy ***,through a facile and scalable synthetic method,a series of carbon-supported ultrafine Pt_3Co_(x)Mn_(1-x)ternary INPs are prepared in this work,which possess the"skin-like"ultrathin Pt shells,the ordered L1_(2) atomic structure,and the high-even dispersion on supports(L1_(2)-Pt_3Co_(x)Mn_(1-x)/~SPt INPs/C).Electrochemical results present that the composition-optimized L1_(2)-Pt_3Co_(0.7)Mn_(0.3)/~SPt INPs/C exhibits the highest electrocata lytic activity among the series,which are also much better than those of the pristine ultrafine Pt/***,it also has a greatly enhanced electrochemical *** addition,the effects of annealing temperature and time are further *** importantly,such superior ORR electrocatalytic performance of L1_(2)-Pt_3Co_(0.7)Mn_(0.3)/~SPt INPs/C are also well demonstrated in practical fuel *** characterization analyses further reveal the major origins of the greatly enhanced ORR electrocata lytic performance:the Pt-Co-Mn alloy-induced geometric and ligand effects as well as the extremely high L1_(2) atomic-ordering *** work not only successfully develops a highly active and stable ordered ternary intermetallic ORR electrocatalyst,but also elucidates the corresponding"structure-function"relationship,which can be further applied in designing other intermetallic(electro)catalysts.

关键词： Platinum Cobalt Manganese Oxygen reduction reaction Ordered intermetallic L1_(2)atomic structure Proton-exchange membrane fuel cell

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A new route to fabricate flexible,breathable composites with advanced thermal management capability for wearable electronics

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npj Flexible Electronics 2023年第1期7卷 321-329页

作者： Huibao Chen Yafei Ding Guimei Zhu Yu Liu Qun Fang Xue Bai Yan Zhao Xin Li xingyi Huang tong-Yi zhang Baowen Li bin Sun College of Physics Qingdao UniversityQingdao 266071PR China College of Electronics and Information Qingdao UniversityQingdao 266071PR China department of materials science and engineering Southern University of Science and TechnologyShenzhen 518055PR China School of Microelectronics Southern University of Science and TechnologyShenzhen 518055PR China School of Physical Education Qingdao UniversityQingdao 266071PR China Shenzhen Institute of Advanced Electronic materials Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055PR China College of Textile and Clothing engineering Soochow UniversitySuzhou 215123PR China department of polymer science and engineering Shanghai Key Laboratory of Electrical Insulation and Thermal AgingShanghai Jiao Tong UniversityShanghai 200240PR China materials Genome Institute Shanghai University200444 ShanghaiPR China department of Physics and Shenzhen International Quantum AcademySouthern University of Science and TechnologyShenzhen 518055PR China Paul M Rady department of Mechanical engineering Department of PhysicsUniversity of ColoradoBoulderCO 80305-0427USA Weihai Innovation Research Institute of Qingdao university Weihai 264200PR China

Wearable electronics with miniaturization and high-power density call for devices with advanced thermal management capabilities,outstanding flexibility,and excellent ***,it is difficult to achieve these goals simultaneously due to the conflict between high thermal conductivity and permeability and ***,we report an approach to fabricate flexible,breathable composites with advanced thermal management capability by coating the boron nitride nanosheets(BNNSs)layer with high thermal conductivity on the grids of patterned electrospun thermoplastic polyurethane(TPU)fibrous *** composite exhibited a significant enhancement of thermal conductivity and preserved instinctive breathability *** the composite was integrated into flexible devices,its saturating operating temperature dropped significantly compared to that of pure Ecoflex ***,the surface temperature fluctuation was less than 0.5°C during more than 2000 cycles bendingreleasing ***,a prototype to fabricate wearable electronics with advanced thermal management capability was proposed.

关键词： thermal polyurethane boron

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New insight into the adsorption of ruthenium,rhodium,and palladium from nitric acid solution by a silica-polymer adsorbent

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Nuclear science and Techniques 2020年第4期31卷 16-28页

作者： Shi-Chang zhang Shun-Yan Ning Jie zhou Si-Yi Wang Wei zhang Xin-Peng Wang Yue-zhou Wei Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured materials School of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China School of Nuclear science and engineering Shanghai Jiao Tong UniversityShanghai 200240China

A porous silica-polymer-based adsorbent,isoBuBTP/Si O2-P,was prepared by a vacuum impregnation method and used for the recovery of ruthenium,rhodium,and palladium from nitric acid *** experimental results revealed that iso Bu-BTP/SiO2-P exhibited unique adsorption properties such as high saturation adsorption capacity(Ru:0.35 mmol g^-1,Rh:0.32 mmol g^-1,Pd:1.05 mmol g^-1)and excellent selectivity over other metal ions,such as lanthanides(SF(PGM/M)>40)in 1 M HNO3 *** adsorption process conformed to the pseudosecond-order model and Langmuir *** the UV,FTIR,and XPS analyses,it can be concluded that the strong affinity between functional groups(C–N=C)and metal ions as well as NO3-played a role in coordination during the adsorption ***,the desorption behavior was studied,and it was found that the adsorbed Pd,Rh,and Ru could be eluted with a 0.01 M nitric acid–0.1M thiocarbamide solution,5M hydrochloric acid,and sodium hypochlorite(CP)solution,***,based on those findings,a simple process for the separation and recovery of Pd,Rh,and Ru from high-level liquid waste using iso Bu-BTP/SiO2-P was designed and proposed.

关键词： BTP Adsorption Ruthenium Rhodium Palladium High-level liquid waste

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Stimuli-responsive dual drugs-conjugated polydopamine nanoparticles for the combination photothermal-cocktail chemotherapy

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chinese Chemical Letters 2021年第1期32卷 561-564页

作者： Lei zhou Chang Du Rong zhang Changming Dong School of Chemistry and Chemical engineering Shanghai Key Laboratory of Electrical Insulation and Thermal AgingShanghai Jiao Tong UniversityShanghai 200240China Joint Research Center for Precision Medicine Department of Obstetrics and GynecologyShanghai Jiao Tong University Affiliated Sixth People’s Hospital South CampusShanghai Fengxian Central HospitalShanghai 201499China

We developed one-pot aqueous copolymerization of two dopamine prodrugs to prepare dual drugsconjugated polydopamine nanoparticles(PDOXCBs),which integrated near infrared(NIR)-mediated photothermal effect with cocktail chemotherapy into one copolymer *** a mild NIR irradiation(808 nm,1 W/cm^(2),10 min),PDOXCBs gradually heated aqueous solution over 12.8-13.9℃,which accordingly enhanced in vitro dual doxorubicin(DOX) and chlorambucil(CB) drug-release with assistance of the other stimuli of pH 5.0 and 10 mmol/L D,L-dithiothreitol(DTT).The combination photothermal-cocktail chemotherapy(PTT-CCT) treatment based on PDOXCB27 plus NIR irradiation gave a highly lowered half maximal inhibitory concentration(IC_(50)) of 2.23 μg/mL and a combination index of0.36,displaying a superior synergistic effect between PTT and CCT in vitro.

关键词： Near infrared polymer drug conjugate Cocktail chemotherapy Photothermal therapy Combination therapy

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3D-printed surface promoting osteogenic differentiation and angiogenetic factor expression of BMSCs on Ti6Al4V implants and early osseointegration in vivo

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Journal of materials science & Technology 2019年第2期35卷 336-343页

作者： Jinkai zhang Wenhui zhou Hui Wang Kaili Lin Fengshan Chen department of Orthodontics School & Hospital of Stomatology Tongji University shanghai engineering Research Center of Tooth Restoration and Regeneration department of Oral & Cranio-Maxillofacial Surgery Shanghai Ninth People's Hospital Shanghai Jiao Tong University School of Medicine Shanghai Key Laboratory of Stomatology Shanghai Research Institute of Stomatology

Three-dimensional-printed(3 D-P) titanium implants display many advantages, such as design flexibility,higher efficiency, the capability to easily construct complex or customized structures, etc., and is believed to potentially replace traditional implants. However, the biological performance of the 3 D-P titanium surface has not been investigated systematically. Herein, we analyzed the surface characteristics of 3 D-P Ti6 Al4 V implants and evaluated the biological responses of bone marrow derived mesenchymal stromal cells(BMSCs) to the 3 D-P surface in vitro. Moreover, after implantation into the rat femoral condyle for3 and 6 weeks, the osseointegration performance was evaluated. The results showed the 3 D-P Ti6 Al4 V implant presented distinct fluctuant macroscale rough surface and relatively better hydrophilicity which enhanced the adhesion, proliferation, osteogenic differentiation and angiogenetic factor expression of BMSCs. Moreover, the in vivo osseointegration performance was also better than that of the control group at the early stage. The present study suggested the 3 D-P titanium alloy is a promising candidate to be used as implant material.

关键词： Three-dimensional printing Titanium alloy BMSCs Osteogenesis Osseointegration

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