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Rigid Dysprosium(Ⅲ)Single-Molecule Magnets Exhibit Preserved Superparamagnetism in Solution

Chinese Journal of Chemistry 2022年第5期40卷 563-570页

作者： Xiali Ding Qiancheng Luo Yuanqi Zhai Xufeng Zhang Yi Lv Xinliang Zhang Chao Ke Chao Wu Yanzhen Zheng Frontier Institute of Science and Technology(FIST) State Key Laboratory of Mechanical Behavior for MaterialsMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi'an Key Laboratory of Sustainable Energy and Materials ChemistrySchool of Chemistry and School of PhysicsXi'an Jiaotong University99 Yanxiang RoadXi'anShaanxi710054 China Department of Hepatobiliary Surgery and The First Affiliated Hospital of Xi'an Jiaotong University 277 West Yanta RoadXi'anShaanxi710061 China Department of Spine Surgery Honghui HospitalXi'an Jiaotong University76 Nanguo RoadXi'anShaanxi710054 China Department of Orthopaedics and Trauma Hong Hui HospitalCollege of MedicineXi'an Jiaotong University555 East Youyi RoadXi'anShaanxi710054 China

Molecules with long preserved magnetic moments are perceived as the smallest units for storing bytes,which could bring a new revolution for information ***,the rational design of such molecules remains *** two rigid adamantanol ligand based dysprosium(III)complexes([Dy(1-AdO)_(2)(py)_(5)]BPh_(4)-1 and[Dy(2-AdO)_(2)(py)_(5)]BPh_(4)-2)with pentagonal-bipyramidal coordination geometry and local D5h symmetry were successfully prepared,which display excellent single-molecule magnet(SMM)behavior(U_(eff)≈1835 K,T_(B)_(ZFC)≈24 K,T_(B)^(100s)≈17 K and T_(B)^(H)=23 K for 1;U_(eff)≈1756 K,T_(B)^(ZFC)≈20 K,T_(B)^(100s)≈16 K and T_(B)^(H)=23 K for 2)due to the much weakened vibration in low energy ***,the large energy barriers and high blocking temperatures for these two complexes in solid states are well preserved in *** is never observed in previous studies of SMMs,indicating that the adamantanol is rigid and can be introduced to make the composed molecules stable enough to maintain the solid state magnetic property in solution.

关键词： Molecularmagnets Lanthanide D_(sh)-symmetry Superparamagnetism Solution

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RNA structure determination:From 2D to 3D

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Fundamental Research 2023年第5期3卷 727-737页

作者： Jie Deng Xianyang Fang Lin Huang Shanshan Li Lilei Xu Keqiong Ye Jinsong Zhang Kaiming Zhang Qiangfeng Cliff Zhang Guangdong Provincial key laboratory of Malignant Tumor Epigenetics and Gene Regulation Guangdong-Hong Kong Joint Laboratory for RNA MedicineSun Yat-Sen Memorial HospitalSun Yat-Sen UniversityGuangzhou 510120China Beijing Frontier Research Center for Biological Structure Center for Synthetic and Systems BiologySchool of Life SciencesTsinghua UniversityBeijing 100084China key laboratory of RNA Biology CAS Center for Excellence in BiomacromoleculesInstitute of BiophysicsChinese Academy of SciencesBeijing 100101China moe key laboratory for Cellular Dynamics and Center for Advanced Interdisciplinary Science and Biomedicine of IHM Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230027China University of Chinese Academy of Sciences Beijing 100049China moe key laboratory of Bioinformatics Beijing Advanced Innovation Center for Structural Biology&Frontier Research Center for Biological StructureCenter for Synthetic and Systems BiologySchool of Life SciencesTsinghua UniversityBeijing 100084China Tsinghua-Peking Center for Life Sciences Beijing 100084China

RNA molecules serve a wide range of functions that are closely linked to their *** basic structural units of RNA consist of single-and double-stranded *** order to carry out advanced functions such as catalysis and ligand binding,certain types of RNAs can adopt higher-order *** analysis of RNA structures has progressed alongside advancements in structural biology techniques,but it comes with its own set of challenges and corresponding *** this review,we will discuss recent advances in RNA structure analysis techniques,including structural probing methods,X-ray crystallography,nuclear magnetic resonance,cryo-electron microscopy,and small-angle X-ray ***,a combination of multiple techniques is employed for the integrated analysis of RNA *** also survey important RNA structures that have been recently determined using various techniques.

关键词： RNA structure RNA structure probing X-ray crystallography Nuclear magnetic resonance spectroscopy Cryo-electron microscopy Small angle X-ray scattering

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In situ instant generation of an ultrabroadband near-infrared emission center in bismuth-doped borosilicate glasses via a femtosecond laser

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Photonics Research 2019年第3期7卷 300-310页

作者： LIPING WANG JIANGKUN CAO YAO LU XIAOMAN LI SHANHUI XU QINYUAN ZHANG ZHONGMIN YANG MINGYING PENG State key laboratory of Luminescent Materials and Devices Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques School of Materials Science and Engineering South China University of Technology Department of Orthopedics Zhujiang Hospital Southern Medical University School of Physics and Physical Engineering Shandong Provincial Key Laboratory of Laser Polarization and Information TechnologyQufu Normal University

Bismuth(Bi)-doped photonic materials, which exhibit broadband near-infrared(NIR) luminescence(1000–1600 nm), are evolving into interesting gain media. However, the traditional methods have shown their limitations in enhancing Bi NIR emission, especially in the microregion. Consequently, the typical NIR emission has seldom been achieved in Bi-doped waveguides, which highly restricts the application of Bi-activated ***, superbroadband Bi NIR emission is induced in situ instantly in the grating region by a femtosecond(fs)laser inside borosilicate glasses. A series of structural and spectroscopic characterizations are summoned to probe the generation mechanism. And we show how this novel NIR emission in the grating region can be enhanced significantly and erased reversibly. Furthermore, we successfully demonstrate Bi-activated optical *** results present new insights into Bi-doped materials and push the development of broadband waveguide amplification.

关键词： ultrabroadband near-infrared emission center bismuth-doped borosilicate glasses via a femtosecond laser

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Interacting plexcitons for designed ultrafast optical nonlinearity in a monolayer semiconductor

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Light(Science & Applications) 2022年第5期11卷 877-887页

作者： Yuxiang Tang Yanbin Zhang Qirui Liu Ke Wei Xiang’ai Cheng Lei Shi Tian Jiang College of Advanced Interdisciplinary Studies National University of Defense Technology410073 ChangshaChina key laboratory of Micro-and NanoPhotonic Structures(Ministry of Education) and State Key Laboratory of Surface PhysicsDepartment of PhysicsFudan University200433 ShanghaiChina State key laboratory of High Performance Computing College of ComputerNational University of Defense Technology410073 ChangshaChina Beijing Institute for Advanced Study National University of Defense Technology100000 BeijingChina

Searching for ideal materials with strong effective optical nonlinear responses is a long-term task enabling remarkable breakthroughs in contemporary quantum and nonlinear ***,hybridized light-matter quasiparticles,are an appealing candidate to realize such ***,we explore a class of peculiar polaritons,named plasmon–exciton polaritons(plexcitons),in a hybrid system composed of silver nanodisk arrays and monolayer tungsten-disulfide(WS2),which shows giant room-temperature nonlinearity due to their deep-subwavelength localized ***,comprehensive ultrafast pump–probe measurements reveal that plexciton nonlinearity is dominated by the saturation and higher-order excitation-induced dephasing interactions,rather than the well-known exchange interaction in traditional microcavity ***,we demonstrate this giant nonlinearity can be exploited to manipulate the ultrafast nonlinear absorption properties of the solid-state *** findings suggest that plexcitons are intrinsically strongly interacting,thereby pioneering new horizons for practical implementations such as energy-efficient ultrafast all-optical switching and information processing.

关键词： nonlinearity monolayer nonlinear

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Representation of conspecific vocalizations in amygdala of awake marmosets

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National Science Review 2023年第11期10卷 8-19页

作者： Guoqiang Jia Siyi Bai Yingxu Lin Xiaohui Wang Lin Zhu Chenfei Lyu Guanglong Sun Kang An Anna Wang Roe Xinjian Li Lixia Gao Department of Neurology of the Second Affiliated Hospital and Interdisciplinary Institute of Neuroscience and Technology Zhejiang University School of Medicine key laboratory of Biomedical Engineering of Ministry of Education College of Biomedical Engineering and Instrument ScienceZhejiang University College of Information Mechanical and Electrical EngineeringShanghai Normal University moe Frontier Science Center for Brain Science and Brain-Machine Integration School of Brain Science and Brain Medicine Zhejiang University key laboratory of Medical Neurobiology of Zhejiang Province Zhejiang University School of Medicine

Human speech and animal vocalizations are important for social communication and animal *** in the auditory pathway are responsive to a range of sounds, from elementary sound features to complex acoustic sounds. For social communication, responses to distinct patterns of vocalization are usually highly specific to an individual conspecific call, in some species. This includes the specificity of sound patterns and embedded biological information. We conducted single-unit recordings in the amygdala of awake marmosets and presented calls used in marmoset communication, calls of other species and calls from specific marmoset individuals. We found that some neurons(47/262) in the amygdala distinguished ’Phee’ calls from vocalizations of other animals and other types of marmoset vocalizations. Interestingly, a subset of Phee-responsive neurons(22/47) also exhibited selectivity to one out of the three Phees from two different ’caller’ marmosets. Our findings suggest that, while it has traditionally been considered the key structure in the limbic system, the amygdala also represents a critical stage of socially relevant auditory perceptual processing.

关键词： vocalization non-human primate marmoset amygdala

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Multidimensional defects tailoring local electron and Mg^(2+) diffusion channels for boosting magnesium storage performance of WO_(3)/MoO_(2)

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Journal of Energy Chemistry 2023年第9期84卷 476-485页

作者： Shiqi Ding Yuxin Tian Jiankang Chen He Lv Amin Wang Jingjie Dai Xin Dai Lei Wang Guicun Li Alan Meng Zhenjiang Li College of Materials Science and Engineering Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life ScienceMOECollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina Qingdao Engineering Research Center for New Metallic Functional Materials Characteristic Laboratory of Advanced Metal Functional Materials and Processing in Universities of ShandongQingdao Binhai UniversityQingdao 266555ShandongChina College of Electromechanical Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina

Defect engineering presents great promise in addressing lower specific capacity,sluggish diffusion kinetics and poor cycling life issues in energy storage ***,multidimensional(0D/2D/3D) structural defects are constructed in WO_(3)/MoO_(2) simultaneously via competing for and sharing with O atoms during simple hydrothermal *** and 2D defects tailor local electron,activating more sites and generating built-in electric fields to yield ion reservoir,meanwhile,3D defect owning lower anisotropic property tailors Mg^(2+) diffusion channels to fully exploit Mg^(2+) adsorbed sites induced by OD and 2D defects,enhance the kinetics and maintain structural *** from synergistic effect of 0D/2D/3D structural defects,the designed WO_(3)/MoO_(2) shows the higher specific capacity(112.8 mA h g^(-1) at 50 mA g^(-1) with average attenuation rate per cycle of 0.068%),superior rate capability and excellent cycling stability(specific capacity retention of 80% after 1500 cycles at 1000 mA g^(-1)).This strategy provides design ideas of introducing multidimensional structural defects for tailoring local electron and microstructure to improve energy storage property.

关键词： Multidimensional defects Local electron tailoring Heterostructure Cathode Magnesium ions batteries

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Periodic Homogenization for Inner Boundary Conditions with Equi-valued Surfaces:the Unfolding Approach

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Chinese Annals of Mathematics,Series B 2013年第2期34卷 213-236页

作者： Doina CIORANESCU Alain DAMLAMIAN Tatsien LI Laboratoire Jacques-Louis Lions(UMR 7598 du CNRS) Universit Pierre et Marie Curie4 Place Jussieu75005 ParisFrance Universit Paris-Est Laboratoire d'Analyse et de Math'ematiques AppliquesCNRS UMR 8050 Centre Multidisciplinaire de Crteil94010 CrteilCedexFrance Nonlinear Mathematical Modeling and Methods laboratory Shanghai key laboratory for contemporary Applied Mathematics School of Mathematical Sciences Fudan UniversityShanghai 200433China

Making use of the periodic unfolding method,the authors give an elementary proof for the periodic homogenization of the elastic torsion problem of an infinite 3dimensional rod with a multiply-connected cross section as well as for the general electroconductivity problem in the presence of many perfect conductors(arising in resistivity well-logging).Both problems fall into the general setting of equi-valued surfaces with corresponding assigned total *** unfolding method also gives a general corrector result for these problems.

关键词： Periodic homogenization Elastic torsion Equi-valued surfaces Resistivitywell-logging Periodic unfolding method

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PHDs-seq:a large-scale phenotypic screening method for drug discovery through parallel multi-readout quantification

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Cell Regeneration 2023年第1期12卷 204-216页

作者： Jun Li Jun Chi Yang Yang Zhongya Song Yong Yang Xin Zhou Yang Liu Yang Zhao State key laboratory of Natural and Biomimetic Drugs MOE Key Laboratory of Cell Proliferation and DifferentiationBeijing Key Laboratory of Cardiometabolic Molecular MedicineInstitute of Molecular MedicineCollege of Future TechnologyPeking UniversityBeijing 100871China Peking‑Tsinghua Center for Life Sciences Peking UniversityBeijing 100871China Plastech Pharmaceutical Technology Ltd Nanjing 210031China Jiangsu key laboratory of Molecular Biology for Skin Diseases and STIs Institute of DermatologyChinese Academy of Medical Sciences and Peking Union Medical CollegeNanjingChina Department of General Surgery Peking University Third HospitalBeijing 100191China

High-throughput phenotypic screening is a cornerstone of drug development and the main technical approach for stem cell ***,simultaneous detection of activated core factors responsible for cell fate determination and accurate assessment of directional cell transition are difficult using conventional screening methods that focus on changes in only a few *** PHDs-seq(Probe Hybridization based Drug screening by sequencing)platform was developed to evaluate compound function based on their transcriptional effects in a wide range of signature *** this proof-of-concept demonstration,several sets of markers related to cell fate determination were profiled in adipocyte reprogramming from dermal *** validating the accuracy,sensitivity and reproducibility of PHDs-seq data in molecular and cellular assays,a panel of 128 signalling-related compounds was screened for the ability to induce reprogramming of keloid fibroblasts(KF)into ***,the potent ATP-competitive VEGFR/PDGFR inhibitor compound,ABT869,was found to promote the transition from fibroblasts to *** study highlights the power and accuracy of the PHDs-seq platform for high-throughput drug screening in stem cell research,and supports its use in basic explorations of the molecular mechanisms underlying disease development.

关键词： High-throughput screening PHDs-seq Adipocyte reprogramming ABT869

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Anion-Responsive Manganese Porphyrin Facilitates Chloride Transport and Induces Immunogenic Cell Death

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CCS Chemistry 2022年第7期4卷 2409-2419页

作者： Fang-Xin Wang Jie-Wei Liu Xiao-Qiao Hong Cai-Ping Tan Li Zhang Wen-Hua Chen Peter J.Sadler Zong-Wan Mao moe key laboratory of Bioinorganic and Synthetic Chemistry Department of ChemistrySun Yat-Sen UniversityGuangzhou 510275 Department of Chemistry University of WarwickCoventry CV47AL School of Biotechnology and Health Sciences Wuyi UniversityJiangmen 529020

Chloride is the most abundant anion in living *** natural or synthetic chloride anionophores function via hydrogen-bonding ***,dynamic metal-anion coordination can also be an efficient way of transporting chloride across ***,we investigate anion transport by manganese(Ⅲ)meso-tetraphenylporphyrin chloride{[Mn(TPP)Cl],TPP=meso-tetraphenylporphyrin}complex that exhibits labile axial coordination.[Mn(TPP)Cl]showed high chloride transport activity in a bilayer vesicle model with an EC_(50) value of 4.42×10^(−3) mol%.In living cells,[Mn(TPP)Cl]induced rapid chloride influx and *** release of Ca^(2+)and adenosine 5′-triphosphate(ATP),as well as the relocation of calreticulin,revealed that[Mn(TPP)Cl]caused immunogenic cell *** analysis indicated that[Mn(TPP)Cl]impaired several physiological processes,including DNA synthesis,transcription,mitochondrial respiration,RNA translation,and immune *** study suggests that dynamic metal-anion interactions across membranes might provide a practical strategy for the interference of chloride homeostasis.

关键词： manganese porphyrin anionophore chloride transport autophagy immunogenic cell death

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P2X7/P2X4 Receptors Mediate Proliferation and Migration of Retinal Microglia in Experimental Glaucoma in Mice

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Neuroscience Bulletin 2022年第8期38卷 901-915页

作者： Meng-Xi Xu Guo-Li Zhao Xin Hu Han Zhou Shu-Ying Li Fang Li Yanying Miao Bo Lei Zhongfeng Wang State key laboratory of Medical Neurobiology and moe Frontiers Center for Brain Science Institutes of Brain ScienceFudan UniversityShanghai200032China Institute of Neuroscience and Third Affiliated Hospital Henan Provincial People’s HospitalHenan Eye InstituteHenan Eye HospitalPeople’s Hospital of Zhengzhou UniversityZhengzhou UniversityZhengzhou450003China

Microglia are involved in the inflammatory response and retinal ganglion cell damage in ***,we investigated how microglia proliferate and migrate in a mouse model of chronic ocular hypertension(COH).In COH retinas,the microglial proliferation that occurred was inhibited by the P2X7 receptor(P2X7R)blocker BBG or P2X7R knockout,but not by the P2X4R blocker *** of primary cultured microglia with BzATP,a P2X7R agonist,mimicked the effects of cell proliferation and migration in COH retinas through the intracellular MEK/ERK signaling *** migration assays showed that the P2X4R agonist CTP induced microglial migration,which was completely blocked by *** vivo and in vitro experiments demonstrated that ATP,released from activated Müller cells through connexin43 hemichannels,acted on P2X7R to induce microglial proliferation,and acted on P2X4R/P2X7R(mainly P2X4R)to induce microglial *** results suggest that inhibiting the interaction of Müller cells and microglia may attenuate microglial proliferation and migration in glaucoma.

关键词： Glaucoma Chronic ocular hypertension Retinal microglia Proliferation Migration P2X7R/P2X4R Müller cells

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