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Buildingcrystal structures ofconjugatedpolymersthrough X-ray diffraction and molecular modeling

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SmartMat 2021年第3期2卷 378-387页

作者： Ze-fan Yao Qi-yi Li Hao-Tian Wu yi-fan ding Zi-Yuan Wang Yang Lu Jie-Yu Wang Jian Pei Beijing National Laboratory for Molecular Sciences(BNLMS) Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCenter of Soft Matter Science and EngineeringCollege of Chemistry and Molecular EngineeringPeking UniversityBeijingChina

Crystal structure of conjugated molecules and polymers is fundamentally critical to understand their multilevel microstructures,carrier transport,and diverse ***,to determine the crystal structure of conjugated polymers is a significant challenge,mainly due to the poor crystallinity,weak diffraction,and instability under high-energy ***,we build the possible crystal structures of eight typical conjugated polymers,covering several widely used molecular segments in organic *** model the packing structures of these seed polymers based on synchrotron X-ray diffractions and molecular *** crystal structures provide a new platform to predict the packing structures of more related polymer systems,extending the molecular *** on this polymer crystal structure database,the multiscale microstructures and charge transport properties of conjugated polymers can be predicted before *** study sets up a polymer crystal structure database to eliminate the current trial-and-error approaches and accelerating the design of high-performance conjugated polymers.

关键词： charge transport conjugated polymers crystal structure molecular modeling

Compositional study of δ-NbN film by Auger electron microscopy

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Tungsten 2023年第1期5卷 130-135页

作者： Zhao-Xi Chen Peng Dong yi-Wen Zhang yi-Lan Jiang yi-fan ding Yue-Shen Wu Jing-Hui Wang Xiang Zhou Jun Li Center for Transformative Science ShanghaiTech UniversityShanghai 201210China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China ShanghaiTech Laboratory for Topological Physics ShanghaiTech UniversityShanghai 200031China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Wuhan National High Magnetic Field Center Huazhong University of Science&TechnologyWuhan 430074China

The chemical stoichiometry on the surface of superconducting δ-NbN thin films is of great importance for their ***,we fabricated the δ-NbN thin films on SiO2/Si substrate by DC sputtering *** film was characterized using X-ray diffraction(XRD) and atomic force microscopy(AFM).Transport properties were measured to reveal the field dependent superconducting transition *** XRD and electrical measurement show high crystallinity of δ-NbN phase.A homogeneous and smooth surface morphology was measured by *** electron spectroscopy(AES) was applied to analyze the composition along the depth of the *** evolution of Auger peak profile,heights and nitride stoichiometry at the film surface is *** current study provides a more thorough understanding of complex chemical compositions of δ-NbN thin films.

关键词： Superconducting films Magnetron sputtering Auger electron spectroscopy Depth profile Surface oxidation

Disposal of zinc extraction residues via iron ore sintering process:an innovative resource utilization

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Journal of Iron and Steel Research International 2024年第7期31卷 1636-1645页

作者： Chun-long fan Cheng-yi ding Tao Yang Yun-fei Luo yi-fan Wang Qian Li Hong-ming Long School of Metallurgical Engineering Anhui University of TechnologyMa'anshan 243002AnhuiChina Zhongye Changtian International Engineering Co. Ltd.Changsha 410205HunanChina Key Laboratory of Metallurgical Emission Reduction and Resources Recycling(Ministry of Education) Anhui University of TechnologyMa'anshan 243002AnhuiChina

Zinc extraction residue,a solid waste generated from the treatment of zinc-containing dust in rotary kilns,is commonly stockpiled in steel companies for extended *** poses significant disposal challenges and environmental pollution *** far,research on the treatment of zinc extraction residues has been slow,inadequate,and *** this gap,a novel approach was proposed to effectively treat the zinc extraction residue via the iron ore sintering *** was feasible to add 1 wt.%of zinc extraction residues to the sintering raw *** more adequate mineralization reaction resulted in higher yield and tumbler indexes,despite a slight decrease in sintering *** this may result in a slight decrease in sintering speed,the more complete mineralization reaction leads to improved sintering yield and tumbler ***,the addition of zinc extraction residues reduced the CO and NO_(x) concentrations in the sintering flue ***,the iron ore sintering process provided a viable solution for resource utilization and environmentally friendly treatment of zinc extraction residues.

关键词： Zinc extraction residue Iron ore sintering Co-processing Waste utilization Gas pollutant reduction

In-situ transmission electron microscopy observation of the evolution of dislocation loops and gas bubbles in tungsten during H2+and He+dual-beam irradiation

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Tungsten 2021年第4期3卷 434-447页

作者： yi-fan ding yi-Peng Li Xin-yi Liu Guang Ran Xiu-yin Huang Qing Han Yang Chen Jin-Chi Huang Zhe-Hui Zhou College of Energy Xiamen UniversityXiamen 361102China Fujian Research Center for Nuclear Engineering Xiamen 361102China

Dislocation loop and gas bubble evolution in tungsten were in-situ investigated under 30 keV H_(2)^(+)and He^(+)dual-beam irra-diation at 973 K and 1173 *** average size and number density of dislocation loops and gas bubbles were obtained as a function of irradiation *** quantitative calculation and analysis of the migration distance of 1/2loops at low irradiation dose indicated that the main mechanism of the formation ofloops should be attributed to the high-density helium cluster inducement mechanism,instead of the 1/2loop reaction mechanism.H2+and He+dual-beam irradiation induced the formation ofloops and 1/2loops,while increasing the irradiation temperature would increaseloop *** percentage ofloops was approximately 18.6%at 973 K and increased to 22.9%at 1173 *** loop reaction between two 1/2loops to form a large-sized 1/2loop was in-situ observed,which induced not only the decrease of the number of 1/2loops but also the significant increase of their ***loops impeded the movement of dislocation line and tended to escape from it instead of being *** the increase of irradiation dose,the yield strength increment(Δ_(σloop))caused by the change of loop size and density increased first and then decreased slightly,while the yield strength increment(Δ_(σbubble))caused by the change of bubble size and density always ***,within the current irradiation dose range,Δ_(σloop)was much larger thanΔ_(σbubble).

关键词： Tungsten H-He dual-beam irradiation In-situ transmission electron microscopy observation Loop

A brand new green coating technology for realizing the regulation of spherical propellant energy release process

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Defence Technology（防务技术） 2024年第6期36卷 78-94页

作者： Wenhao fan Yajun ding Zhongliang Xiao School of Chemistry and Chemical Engineering Nanjing University of Science and TechnologyNanjing210094China Key Laboratory of Special Energy Materials Nanjing University of Science and TechnologyMinistry of EducationNanjing 210094China

To achieve the controllable release of energy of nitrocellulose-based propellants,this paper combines the cellulose-based nanocomposites aqueous coating(Surelease®-NC)with fluidized bed coating equipment to successfully prepare the coated spherical propellant for the first *** effects of fluidized bed coating temperature,air velocity,flow speed and atomization pressure on the adhesion rate,coating integrity and coating uniformity of the coated spherical propellant were investigated,and the preparation of coated spherical propellant with homogeneous size and structural integrity was achieved for the first *** microscopic morphology,chemical structure,water vapor adsorption behavior,combustion performance,and ageing resistance property of the coated spherical propellant were systematically investigated by,Fourier transforms infrared spectroscopy(FTIR),Micro confocal raman spectrometer,field scanning electron microscopy(SEM),dynamic vapor adsorption techniques,and closed bomb test,confirming the surface core-shell structure and the tightly bonded interfacial structure of coated spherical ***,the coated spherical propellant has good hygroscopic,excellent progressive burning and long storage stability.

关键词： Nanocomposites aqueous coating Fluidized bed coating equipment Coated spherical propellant Controllable release of energy Long storage stability

Pachymic acid exerts antitumor activities by modulating the Wnt/β-catenin signaling pathway via targeting PTP1B

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Asian Pacific Journal of Tropical Biomedicine 2024年第4期14卷 170-180页

作者： Hao Zhang Kun Zhu Xue-Feng Zhang yi-Hui ding Bing Zhu Wen Meng Qing-Song ding fan Zhang Department of Emergency Affiliated Hangzhou First People’s HospitalZhejiang University School of MedicineHangzhou 310006ZhejiangChina Department of Cardiothoracic Surgery The Third Affiliated Hospital of Qiqihar Medical CollegeQiqihar 161000HeilongjiangChina Department of Cardiothoracic Surgery The Affiliated Heilongjiang Provincial Hospital of Harbin Institute of TechnologyHarbin 150036HeilongjiangChina

Objective:To determine the inhibitory effects of pachymic acid on lung adenocarcinoma(LUAD)cells and elucidate its underlying ***:CCK-8,wound healing,Transwell,Western blot,tube formation,and immunofluorescence assays were carried out to measure the effects of various concentrations of pachymic acid on LUAD cell proliferation,metastasis,angiogenesis as well as ***,molecular docking technology was used to detect the potential targeted binding association between pachymic acid and protein tyrosine phosphatase 1B(PTP1B).Moreover,PTP1B was overexpressed in A549 cells to detect the specific mechanisms of pachymic ***:Pachymic acid suppressed LUAD cell viability,metastasis as well as angiogenesis while inducing cell *** also targeted PTP1B and lowered PTP1B ***,PTP1B overexpression reversed the effects of pachymic acid on metastasis,angiogenesis,and autophagy as well as the expression of Wnt3a andβ-catenin in LUAD ***:Pachymic acid inhibits metastasis and angiogenesis,and promotes autophagy in LUAD cells by modulating the Wnt/β-catenin signaling pathway via targeting PTP1B.

关键词： Pachymic acid Lung adenocarcinoma Protein tyrosine phosphatase 1B Wnt/β-catenin signaling pathway Metastasis Angiogenesis Autophagy

Recent Progress on Water-based Liquid Embolic Agents in Endovascular Treatment

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Chemical Research in Chinese Universities 2024年第5期40卷 776-785页

作者： QI yi fan Hailong Department of Neurosurgery Faculty of Medicine and Graduate School of MedicineHokkaido UniversitySapporo060-8638Japan Institute for Chemical Reaction Design and Discovery(WPI-ICReDD) Hokkaido UniversitySapporo001-0021Japan

Vascular embolization treatment,a minimally invasive surgery for various blood vessel-related conditions,has emerged as a crucial method in treating such as hemorrhage,arteriovenous malformation,aneurysms,and hypervascular *** embolic agents are gaining prominence due to their distinct advantage in infiltrating distal regions,expanding the scope of embolization beyond the reach of solid *** strides in biomaterials and technologies have spurred the development of novel liquid embolic agents,addressing challenges posed by traditional *** mini-review provides a concise overview of the recent progress in water-based liquid embolic agents,highlighting their potential to overcome limitations associated with current embolic *** presenting selected research outcomes,we illuminate advancements that enhance the efficacy of liquid embolic ***,the review outlines essential properties for effective liquid embolic agents,offering insights for future developments in this field.

关键词： Endovascular treatment Lquid embolic agent Hydrogel

Interface engineering via molecules/ions/groups for electrocatalytic water splitting

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Nano Research 2024年第9期17卷 7864-7879页

作者： Defang ding Youwen Liu fan Xia Engineering Research Center of Nano-Geomaterials of Ministry of Education Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074China State Key Laboratory of Materials Processing and Die&Mould Technology and School of Materials Science and Engineering Huazhong University of Science and Technology WuhanHubei 430074China

The electrochemical water splitting to produce hydrogen converts electric energy into clean hydrogen energy,which is a groundbreaking concept of energy *** achieve high efficiency,numerous strategies have been developed to enhance the performance of *** these,interface engineering with molecules/ions/groups,serves as a versatile approach for optimizing the performance of electrocatalysts in water *** the basis of numerous achievements in high-performance electrocatalysts engineered through molecules/ions/groups at interface,a comprehensive understanding of these advancements is crucial for guiding future ***,after providing a concise overview of the background,the interface engineering via molecules/ions/groups for electrocatalytic water splitting is demonstrated from three ***,the engineering of electronic state of electrocatalysts by molecules/ions/groups at interface to reduce the Gibbs free energy of the corresponding ***,the modification of local microenvironment surrounding electrocatalysts via molecules/ions/groups at interface to enhance the transfer of reactants and ***,the protection of electrocatalysts with molecule/ion/group fences improves their durability,including protecting active sites from leaching and defending them against harmful *** fundamental principles of these three aspects are outlined for each,along with pertinent ***,several research directions and challenges are proposed.

关键词： electrocatalyst water splitting interface engineering molecules/ions/groups

Advanced nanofabrication for elastic inorganic aerogels

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Nano Research 2024年第10期17卷 8842-8862页

作者： Xiaota Cheng Xinyi Chang fan Wu Yalong Liao Kai Pan Hao Fong Jianyong Yu yi-Tao Liu Bin ding Innovation Center for Textile Science and Technology College of TextilesDonghua UniversityShanghai 201620China Aerospace Institute of Advanced Material and Processing Technology Beijing 100074China College of Materials Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China

Inorganic aerogels with low density,high porosity,large specific surface area,and superior mechanical properties are excellent candidate materials in fields such as thermal management,energy,catalysis,and biomedical applications.A comprehensive overview of existing elastic inorganic aerogels is provided,covering their structural units,preparation methods,mechanical performances,and ***,based on the constituent building blocks and microstructures,a detailed analysis of the mechanical properties and guidelines for elastic design of aerogels is *** with a succinct summary of prospective developmental direction,this review deliberates on the challenges and potential opportunities of elastic inorganic aerogels,with the intent of providing a versatile platform for designing new types of elastic inorganic aerogels for various applications.

关键词： inorganic aerogels compressive stretchable fabrication mechanical performances applications