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Pressure effects on metal/covalent-organic frameworks:structural and optical properties

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Science China Chemistry 2024年第9期67卷 2890-2903页

作者： Yixuan Wang Yunfeng yang xinyi yang Bo Zou Synergetic Extreme Condition High-Pressure Science Center State Key Laboratory of Superhard MaterialsCollege of PhysicsJilin UniversityChangchun 130012China

Metal-organic frameworks(MOFs)and covalent organic frameworks(COFs)with highly ordered porous structure,tunable bandgap,large specific surface area and structural diversity,provide an appealing platform for the development of stimulus response,sensing,imaging and *** various tuning methods,pressure engineering using the diamond anvil cell is a highly powerful in-situ technique,which can efficiently modulate the structural and optical properties of MOFs/*** is beyond the realization of traditional chemical *** review outlines the research progress in the experimentoriented discovery of new phases or unique properties under high pressure,including phase transition,abnormal compression,photoluminescence(PL)discoloration and ***,the improvement of PL quantum yield in MOFs could be achieved by pressure-treated engineering and hydrogen-bonding cooperativity *** also propose and establish the relationship between structure and optical properties under high ***,the challenge and outlook of the current fields are *** hope that this review will supply guidance for comprehending the development of high-pressure MOF/COF-related research fields,and offer novel strategies for designing more high-performance MOF/COF materials to ultimately expand their applications.

关键词： metal/covalent-organic frameworks pressure engineering phase transition abnormal compressive behaviors piezochromic behaviors emission enhancement

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龙国村偏苗的多语和谐

保山学院学报 2025年第1期44卷 75-81页

作者：熊志文杨欣怡云南师范大学文学院云南昆明650500

云南省广南县龙国村是苗族聚居、异系苗族杂居的典型自然村,通过描写龙国村偏苗的语言生活,以及分析偏苗的语言和谐,发现该村偏苗在稳定自由使用母语的基础上,同时兼用汉语和白苗话,其语言关系属于偏苗话和汉语、白苗话多语和谐型。此外... 详细信息

云南省广南县龙国村是苗族聚居、异系苗族杂居的典型自然村,通过描写龙国村偏苗的语言生活,以及分析偏苗的语言和谐,发现该村偏苗在稳定自由使用母语的基础上,同时兼用汉语和白苗话,其语言关系属于偏苗话和汉语、白苗话多语和谐型。此外,还分析了制约该地多语和谐的因素。

关键词：龙国村偏苗多语和谐

Promising porous materials for 99TcO4- removal from nuclear wastes

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National Science Open 2025年第1期 14-17页

作者： Xinyue Zhang Mengjie Hao xinyi yang Zhongshan Chen Suhua Wang Hui yang Xiangke Wang School of Environmental Science and Engineering Guangdong University of Petrochemical Technology College of Environmental Science and Engineering North China Electric Power University

As a kind of green and clean energy resource, nuclear energy has attracted extensive attention and utilization[1]. Technetium-99(99Tc) is a byproduct of235U, which exists extensively in the spent fuel and radioactive waste generated during nuclear energy production（about 6%） [2]. The volatile99Tc can escape during the vitrification process of nuclear waste, posing the risk of leakage [3].

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Optimizing iodine capture performance by metal-organic framework containing with bipyridine units

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Frontiers of Chemical Science and Engineering 2023年第4期17卷 395-403页

作者： xinyi yang Xiaolu Liu Yanfang Liu Xiao-Feng Wang Zhongshan Chen Xiangke Wang School of Chemistry and Chemical Engineering University of South ChinaHengyang 421001China College of Environmental Science and Engineering North China Electric Power UniversityBeijing 102206China

Radioactive iodine exhibits medical values in radiology,but its excessive emissions can cause environmental ***,the capture of radioiodine poses significant engineering for the environment and medical *** adsorptive capture of radioactive iodine by metal-organic frameworks(MOFs)has risen to *** this work,a Th-based MOF(denoted as Th-BPYDC)was structurally designed and synthesized,consisting of[Th_(6)(μ_(3)-O)_(4)(μ_(3)-OH)_(4)(H_(2)O)6]^(12+)clusters,abundant bipyridine units,and large cavities that allowed guest molecules diffusion and ***-BPYDC exhibited the uptake capacities of 2.23 g·g^(-1) and 312.18 mg·g^(-1) towards I_(2) vapor and I_(2) dissolved in cyclohexane,respectively,surpassing its corresponding analogue *** bipyridine units boosted the adsorption performance,and Th-BPYDC showed good reusability with high *** work thus opened a new way for the synthesis of MOFs to capture radioactive iodine.

关键词： metal-organic framework iodine adsorption nuclear waste environmental remediation

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MOF-derived Fe based catalysts for efficiently Advanced Oxidation Processes: From single atoms to diatomic and nanoparticles

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Progress in Natural Science:Materials International 2023年第4期33卷 534-543页

作者： xinyi yang Jiewen Qin Zhichao Dai Yunqiang Sun Hongmei Liu Xiuwen Zheng Zunfu Hu School of Chemistry and Chemical Engineering Linyi University Key Laboratory of Advanced Biomaterials and Nanomedicine in Universities of Shandong School of Physics and Electronic Engineering Linyi University Qilu Normal University

Sub-nanometer catalysts have drawn great attention based on their superior catalytic activity and extensive application in advanced oxidation processes（AOPs）. Nonetheless, the precise regulation of the coordination environment and exploration of the peroxymonosulfate（PMS） activation mechanism remain the focus of ***, we report the preparation of Fe catalysts with diverse sizes, including single atoms（SAs）, double atoms（DAs）, and nanoparticles（NPs） via adjusting the precursor. Sub-nanometric Fe catalysts exhibit a higher catalytic activity for Bisphenol A（BPA） degradation. It is confirmed that the catalytic activity of the Fe diatomic catalysts（Fe2–N/C） is 2.5 times that of the Fe single-atom catalysts（Fe1–N/C） and 8.3 times that of the Fe-nanoparticleloaded catalysts(FeNP–N/C). Broad pH adaptation ranges and reusability have also been proved. Based on experimental verification and density functional theory, non-free radical pathways dominate the degradation process of BPA, while free radical pathways are in an auxiliary position, accompanied by electron transfer *** is found that the synergistic effect of Fe2–N6sites and pyridinic N adsorption centers contribute to the ultra-high catalytic activity of Fe2–N/C. This work opens up an efficient way for single atom catalysts-based advanced oxidation processes for the efficient removal of refractory organic pollutants.

关键词： Fe diatomic catalysts Advanced oxidation processes Non-free radical pathways Double reaction sites High efficiency degradation

Antibodies Targeting a Conserved Surface Polysaccharide Are Protective Against a Wide Range of Microbial Pathogens Producing β-1-6-Linked Poly-N-Acetylglucosamine(PNAG)

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Engineering 2024年第7期38卷 69-76页

作者： Xi Lu Guoqing Li Jing Pang xinyi yang Colette Cywes-Bentley Xuefu You Gerald B.Pier Beijing Key Laboratory of Antimicrobial Agents Institute of Medicinal BiotechnologyChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100050China Division of Infectious Diseases Department of MedicineBrigham and Women’s HospitalHarvard Medical SchoolBostonMA 02115USA

The b-1-6-linked poly-N-acetylglucosamine(PNAG)polymer is a conserved surface polysaccharide produced by many bacteria,fungi,and protozoan(and even filarial)*** wide-ranging expression makes PNAG an attractive target for vaccine development,as it potentially encompasses a broad range of *** progress has been made in discovering important properties of the biology of PNAG expression in recent *** molecular characterization and regulation of operons for the production of PNAG biosynthetic proteins and enzymes have been studied in many *** addition,the physiological function of PNAG has been further ***-based vaccines and PNAG-targeting antibodies have shown great efficacy in preclinical ***,clinical tests for both vaccines and antibodies have been carried out in humans and economically important animals,and the results are *** it is not destined to be a smooth road,we are optimistic about new vaccines and immunotherapeutics targeting PNAG becoming validated and eventually licensed for clinical use against multiple infectious agents.

关键词： Poly-N-acetylglucosamine Conjugate vaccine Monoclonal antibody

Distributed Event-triggered Control for Frequency Restoration in Islanded Microgrids with Reduced Trigger Condition Checking

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CSEE Journal of Power and Energy Systems 2024年第5期10卷 2156-2165页

作者： Yulin Chen Donglian Qi Zhenming Li Zhenyu Wang xinyi yang Jianliang Zhang College of Electrical Engineering Zhejiang UniversityHangzhou 310027China

For islanded microgrids(MGs),distributed control is regarded as a preferred alternative to centralized control for the frequency restoration of ***,distributed control with successive communication restricts the efficiency and resilience of the control *** address this issue,this paper proposes a distributed event-triggered control strategy for the frequency secondary control in islanded *** proposed event-triggered control is Zeno behavior free and enables each DG to update and propagate its state to neighboring DGs only when a specific“event”occurs,which significantly reduces the communication *** with the existing event-triggered control,a trigger condition checking period of the proposed event-triggered control is provided to reduce the computation burden when checking the trigger ***,using the aperiodicity and intermittent properties of the communication,a simple detection principle is proposed to detect and isolate the compromised communication links in a timely and economic fashion,which improves the resilience of the system against FDI ***,the control effectiveness of the proposed control scheme is validated by the simulation results of the tests on an MG with 4 DGs.

关键词： Distributed control event-triggered control islanded microgrid secondary control

Unravelling a solution-based formation of single- crystalline kinked wurtzite nanowires： The case of MnSe

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Nano Research 2017年第7期10卷 2311-2320页

作者： xinyi yang Bo Zhou Chuang Liu Yongming Sui Guanjun Xiao Yingjin wei Xin Wang Bo Zou State Key Laboratory of Superhard Materials Jilin University Changchun 130012 China Laboratory of Physics and Technology for Advanced Barteries (Ministry of Education) Jilin University Changchun 130012 China College of Physics Jilin University Changchun 130012 China

The search for a novel strategy to sculpt semiconductor nanowires （NWs） at the atomistic scale is crucial for the development of new paradigms in optics, electronics, and spintronics. Thus far, the fabrication of single-crystalline kinked semiconductor NWs has been achieved mainly through the vapor-liquid-solid growth technique. In this study, we developed a new strategy for sculpting single-crystalline kinked wurtzite （WZ） MnSe NWs by triggering the nonpolar axial-oriented growth, thereby switching--at the atomistic scale---the NW growth orientation along the nonpolar axes in a facile solution-based procedure. This presents substantial challenges owing to the dominant polar c axis growth in the solution-based synthesis of one-dimensional WZ nanocrystals. More significantly, the ability to continuously switch the nonpolar axial-growth orientation allowed us to craft the kinking landscape of types 150°, 120°, 90°, and 60°. A probabilistic analysis of kinked MnSe NWs reveals the correlations of the synergy and interplay between these two sets of nonpolar axial growth-orientation switching, which determine the actual kinked motifs. Furthermore, discriminating the side-facet structures of the kinked NWs significantly strengthened the spatially selected interaction of Au nanoparticles. We envisage that such a facile solution-based strategy can be useful for synthesizing other single-crystalline kinked WZ-type transition-metal dichalcogenide NWs to develop novel functional materials with finely tuned properties.

关键词： kinked nanowires single-crystalline nonpolar axial growth wurtzite MnSe

Notch信号通路——对健康和疾病的机械论观点

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Engineering 2024年第3期34卷 212-232页

作者： Yao Meng Zhihan Bo xinyi Feng xinyi yang Penny A.Handford Institute of Medicinal Biotechnology Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China Department of Biochemistry University of OxfordOxford OX13QUUK State Key Laboratory of Respiratory Health and Multimorbidity Beijing 100050China

The Notch signaling pathway is evolutionarily conserved across metazoan species and plays key roles in many physiological *** Notch receptor is activated by two families of canonical ligands(Deltalike and Serrate/Jagged)where both ligands and receptors are single-pass transmembrane proteins usually with large extracellular domains,relative to their intracellular *** interaction of the core binding regions,presented on opposing cell surfaces,formation of the receptor/ligand complex initiates force-mediated proteolysis,ultimately releasing the transcriptionally-active Notch intracellular *** review focuses on structural features of the extracellular receptor/ligand complex,the role of posttranslational modifications in tuning this complex,the contribution of the cell membrane to ligand function,and insights from acquired and genetic diseases.

关键词： Notch signaling pathway Structural biology Glycosylation Genetic disorders Cancer Pharmacological agents