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Solvent-driven reversible transformation between electrically neutral thiolate protected Ag_(25)and Ag_(26)clusters

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Science China Chemistry 2021年第6期64卷 948-952页

作者： Yu-ling Tan ling Yang Tian-Chen Yu Hong Yu Xin-Yao Wang ying-lin song Zheng Niu Jian-Ping Lang College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China School of Physical Science and Technology Soochow UniversitySuzhou 215006China

Two atom-precise silver nanoclusters[Ag_(25)Cl_2(Tab)_(14)(Ph COO)_(11)(DMF)_4](PF_6)_(12)(Ag_(25),DMF=N,N-dimethylformamide)and[Ag_(26)Cl_2(Tab)_(14)(Ph COO)_(13)(DMAc)_4](PF_6)_(11)(Ag_(26),DMAc=N,N-dimethylacetamide)were synthesized based on the electrically neutral thiolate protective ligand,4-(trimethylammonio)benzenethiolate(Tab).The weak Ag–S interaction in Tab-protected silver nanoclusters allows to insert or leave a single silver atom in the Ag–S skeleton through solvent-trigger core fragmentation and re-arrangement,thereby realizing the reversible conversion of Ag_(25)and Ag_(26)for the first time.

关键词： silver nanocluster electrically neutral thiolate reversible transformation

Temperature-dependent chloride-mediated access to atom-precise silver thiolate nanoclusters

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Science China Chemistry 2022年第6期65卷 1094-1099页

作者： ling Yang Xin-Yao Wang Xiao-Yan Tang Meng-Yi Wang Chun-Yan Ni Hong Yu ying-lin song Brendan F.Abrahams Jian-Ping Lang College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou215123China School of Materials Engineering Changshu Institute of TechnologyChangshu215500China School of Physical Science and Technology Soochow UniversitySuzhou215006China School of Chemistry University of MelbourneParkvilleVictoria3010Australia

By using a unique temperature-dependent,chloride-mediated approach,two atom-precise silver nanoclusters[Cl@Ag_(14)(Tab)_(12)-(C_(5)H_(4)NCl)_(12)](PF_(6))_(13)(Cl@Ag_(14))and[Cl_(3)@Ag_(24)(Tab)_(20)(C_(5)H_(4)NCl)_(11)]Cl(PF_(6))_(20)(Cl_(3)@Ag_(24))(Tab=4-(trimethylammonio)benzenethiolate,C_(5)H_(4)NCl=3-chloropyridine)were obtained ***,the number of chloride ions encapsulated inside the Ag-S shell could be regulated by the slow dissolution of almost insoluble KCl at various *** inclusion of additional core chloride ions results in the expansion of the surrounding Ag-S *** article provides a promising synthetic approach for controlling the number of Ag atoms that form a shell around the anionic core,in addition to offering a potential pathway for the introduction of other inorganic anions into silver *** broadly,through the use of related ligands,the synthetic strategy offers scope for generating new families of silver thiolate clusters of varying size and composition.

关键词： temperature-dependent chloride-mediated core expansion silver thiolate nanocluster transformation

Flexible Vertex Engineers the Controlled Assembly of Distorted Supramolecular Tetrahedral and Octahedral Cages

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Research 2022年第2期2022卷 333-344页

作者： Shu-Jin Bao Ze-Ming Xu Tian-Chen Yu ying-lin song Heng Wang Zheng Niu Xiaopeng Li Brendan F.Abrahams Pierre Braunstein Jian-Ping Lang Collge of Chemistry Chemical Enginering and Materias ScienceSoochow UniversitySuzhou 215123China State Key Laboratory of rgnomallic Chemistry Shanghai Jnstitute of Organic ChemistryChinese Academy of SciencesShanghai 200032China School of Plysical Science and Techmology Soochow UinversitySuzhou 215006China College of Chemistry and Enwironmenrial Engineering Shenzhen UniversilyShenzhen 518071China School of Chemistry University of MelbourneVictoria 3010Australia Universite de Strasbourg-CNRS Institut de Chimie(UMR 7177 CNRS)4 Rue Blaise Pascal CS 9003267081 StrasbourgFrance

Designing and building unique cage asemblies atrat increasing interet from supramolecular chemists but remain synthetically ***,we propose the use of a flexible vertex with adjustable angles to selectively form highly distorted tetrahedral and octahedral cages,for the first time,in which the flexible ve rtex forms from the synergistic eft of coordination and covalent *** inherent interligand angle of the vertex can be modulated by guest anions present,which allows for the fine-tuning of diferent cage ***,the reversible structural transformation between tetrahedral and octahedral cages was achieved by anion exchange monitored by mass spectrometric technique,the smaller anions favoring tetrahedral cages,while the larger anions supporting octahedral ***,the KBr-based cage thin films exhibited prominent enhancement of their third-order NLO responses in two or three orders of magnitude compared to those obtained for their corresponding *** work not only provides a new methodology to build irregular polyhedral structures in a controlled and tunable way but also provides access to new kinds of promising functional optical materials.

关键词： vertex tetrahedral synergistic

Three-dimensional super-resolution longitudinal magnetization spot arrays

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Light(Science & Applications) 2017年第1期6卷 630-637页

作者： Zhong-Quan Nie Han lin Xiao-Fei Liu Ai-Ping Zhai Yan-Ting Tian Wen-Jie Wang Dong-Yu Li Wei-Qiang Ding Xue-Ru Zhang ying-lin song Bao-Hua Jia Key Lab of Advanced Transducers and Intelligent Control Systems Ministry of Education of Shanxi ProvinceCollege of Physics and OptoelectronicsTaiyuan University of TechnologyTaiyuan 030024China Centre for Micro-Photonics Faculty of ScienceEngineering and TechnologySwinburne University of TechnologyHawthornVictoria 3122Australia Department of Science Taiyuan Institute of TechnologyTaiyuan 030008China Department of Physics Lingnan Normal UniversityZhanjiang 524048China Department of Physics Harbin Institute of TechnologyHarbin 150001China

We demonstrate an all-optical strategy for realizing spherical three-dimensional(3D)super-resolution(∼λ3/22)spot arrays of pure longitudinal magnetization by exploiting a 4πoptical microscopic setup with two high numerical aperture(NA)objective lenses,which focus and interfere two modulated vectorial *** phase filters(MPFs)are designed via an analytical approach derived from the vectorial Debye diffraction theory to modulate the two circularly polarized *** system is tailored to constructively interfere the longitudinal magnetization components,while simultaneously destructively interfering the azimuthal *** a result,the magnetization field is not only purely longitudinal but also super-resolved in all three ***,the MPFs can be designed analytically to control the number and locations of the super-resolved magnetization spots to produce both uniform and nonuniform arrays in a 3D ***,an all-optical control of all the properties of light-induced magnetization spot arrays has been demonstrated for the first *** results open up broad applications in magnetic-optical devices such as confocal and multifocal magnetic resonance microscopy,3D ultrahigh-density magneto-optic memory,and light-induced magneto-lithography.

关键词： inverse Faraday effect longitudinal magnetization magnetic-optical devices magneto-optics vectorial beams vectorial Debye diffraction theory

C16,a novel advanced glycation endproduct breaker,restores cardiovascular dysfunction in experimental diabetic rats

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Acta Pharmacologica Sinica 2005年第12期26卷 1460-1466页

作者： Gang CHENG~3 Li-li WANG~(2,4) Wen-sheng QU~2 Long LONG~2 Hao CUI~2 Hong-ying LIU~2 ying-lin CAO~3 song LI~2 2 Beijing Institute of Pharmacology and Toxicology,Beijing 100850,China 3 Shenyang Pharmaceutical University,Shenyang 110016,China Shenyang Pharmaceutical University Shenyang China Beijing Institute of Pharmacology and Toxicology Beijing China

Aim:Advanced glycation endproducts（AGE）have been implicated in the patho-genesis of diabetic complications,including diabetic cardiovascular dysfunction.3-[2-（4-Bromo-phenyl）-1-methyl-2-oxo-ethyl]-4,5,6,7-tetrahydro-benzothiazol-3-iumbromide（C16）,a novel AGE breaker,was investigated for its effects on the deve-lopment of cardiovascular disease in diabetic ***:Rats that hadstreptozotocin-induced diabetes for 12 weeks were divided into groups receivingC 16 or vehicle by ***:In hemodynamic studies of the left ventricle,C16 treatment（25 or 50 mg/kg）for 4 weeks resulted in a significant increase in leftventricular systolic pressure,+dp/dtmax,and-dp/dtmaxas compared with vehicle-treated diabetic ***,in hemodynamic studies of the cardiovascularsystem,C16（12.5,25,or 50 mg/kg）treatment for 4 weeks resulted in a dose-dependent and significant increase in cardiac output,a reduction of total periph-eral resistance,and an increase in systemic arterial compliance when comparedwith vehicle-treated diabetic *** studies showed that C16 treatmentalso resulted in a significant decrease in immunoglobulin G-red blood cell surfacecrosslink content and an increase in collagen *** and im-munohistochemical examinations indicated that C 16 was able to prevent increasesof the collagen type Ⅲ/Ⅰ ratio in the aorta and decrease the accumulation of AGEin the ***:C16 has the ability to reduce AGE accumulation intissues in vivo,and can restore diabetes-associated cardiovascular disorders *** provides a potential therapeutic approach for cardiovascular diseaseassociated with diabetes and aging in humans.

关键词： C16 advanced glycation endproduct cardiovascular dysfunction hemodynamics diabetes collagen

C333H,a novel PPARα/γ dual agonist,has beneficial effects on insulin resistance and lipid metabolism

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Acta Pharmacologica Sinica 2006年第2期27卷 223-228页

作者： Cheng XU~3 Li-li WANG~(2,4) Hong-ying LIU~2 Xing-bo ZHOU~3 ying-lin CAO~3 song LI~2 ~2Institute of Pharmacology and Toxicology.Beijing 100850,China.~3Pharmaceutical University of Shenyang.Shenyang 110016.China Pharmaceutical University of Shenyang Shenyang China Institute of Pharmacology and Toxicology Beijing China

Aim:To examine the effects of novel peroxisome proliferator-activated receptor(PPAR)α/γ dual agonist C333H on insulin resistance and lipid ***:An established dual-luciferase reporter gene assay system was used invitro to test the activity of C333H with respect to the transcription of humanPPARα and PPARγ.A preadipocyte differentiation assay and reverse transcrip-tion-polymerase chain reaction were used to detect the functional activities *** db/db mice,the effects of C333H were investigated with respect tolowering of blood glucose and lipid ***:C333H was determined to bea novel PPARα/γ dual agonist because it strongly induced luciferase activity onhuman PPARα and PPARγ,promoting the differentiation of preadipocytes toadipocytes,and functioning in upregulating the expression of some glucose andlipid metabolic target genes of the *** addition,C333H efficiently reducedblood lipid and glucose concentrations in db/db diabetic ***:C333Hhas dual action on both PPARα and PPARγ,and might be of interest for theamelioration of lipid metabolic disorders and insulin resistance associated withtype 2 diabetes.

关键词： C333H peroxisome proliferator-activated receptor insulin resistance lipid metabolism diabetes

Nuclear Magnetic Resonance Studies on Huwentoxin-Ⅺ from the Chinese Bird Spider Ornithoctonus huwena:15N Labeling and Sequence-specific 1H,15N Nuclear Magnetic Resonance Assignments

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Acta Biochimica et Biophysica Sinica 2006年第7期 457-466页

作者： Kuan PENG~1 ying lin~1 song-Ping LIANG~(1,2*) 1 College of Life Science,Peking University,Beijing 100871,China 2 College of Life Science,Hunan Normal University,Changsha 410081,China

Huwentoxin-XI purified from the Chinese bird spider Ornithoctonus huwena is a toxin withboth antiprotease activity and potassium channel blocking *** determine its solution structure,huwentoxin-Ⅺ was expressed in a yeast eukaryotic expression system and studied by ***15N labelingstrategy was used to facilitate the process of resonance *** nearly complete sequence-specificassignments of proton and nitrogen resonances were obtained by analyzing a series of two-dimensional（2D）and three-dimensional（3D）spectra,including DQF-COSY,TOCSY,NOESY,15N-1H HSQC,15N-1H HNHA,15N-1H HNHB,15N-1H TOCSY-HSQC and15N-1H NOESY-HSQC *** structure analysis ofhuwentoxin-Ⅺ showed that it mainly contains an N-terminal 310-helix from Thr3 to Arg5 and a C-terminalα-helix from Gln45 to Cys52,plus a triple-stranded antiparallel β-sheet of Glul 8-Asn23,Thr26-Ile31 *** studies provide a solid basis for the final structure determination of huwentoxin-Ⅺ.

关键词： huwentoxin-XI toxin nuclear magnetic resonance 15N labeling sequence-specific assignment

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激波作用下水泥试样内部损伤试验方法研究

岩土力学 2008年第9期29卷 2314-2318页

作者：林英松蒋金宝丁雁生中国石油大学(华东)石油工程学院山东东营257061 中国科学院力学研究所北京100081

通过优化试验方案,实现了爆炸激波对水泥试样内部的损伤破坏试验,观察到激波对试样的损伤破坏现象。根据试验需求,设计、制作和标定了可用于测量水泥试样内部激波压力(或速度)的传感器,并在水中与商业传感器一起进行了测试,发现两种传... 详细信息

通过优化试验方案,实现了爆炸激波对水泥试样内部的损伤破坏试验,观察到激波对试样的损伤破坏现象。根据试验需求,设计、制作和标定了可用于测量水泥试样内部激波压力(或速度)的传感器,并在水中与商业传感器一起进行了测试,发现两种传感器获得的波形一致,并且该传感器的尺度可以满足试验的需要。利用量纲分析的方法,得到了激波在水泥试样中的衰减规律模型,通过比较相同条件下实测压力与模型计算的压力,发现计算压力要比实测压力高5%～15%。

关键词：试验研究激波损伤低渗透油藏层内爆炸

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含砾岩样中切削齿冲击载荷变化规律试验

中国石油大学学报（自然科学版） 2012年第3期36卷 98-101页

作者：林英松孔栋梁黄名召邹德永单清林中国石油大学石油工程学院山东青岛266580 长城钻探工程有限公司钻井一公司盘锦124010 中国石油海洋工程有限公司钻井事业部天津300280

通过直径为19 mm的单齿切削含砾岩样试验,研究砾石直径、胶结强度、切削深度、切削齿后倾角等对切削齿所受冲击载荷的影响规律,分析PDC钻头钻进砾石层的损坏机制。结果表明:切削齿受到的冲击力随着砾石层胶结强度、砾石直径的增加而增大... 详细信息

通过直径为19 mm的单齿切削含砾岩样试验,研究砾石直径、胶结强度、切削深度、切削齿后倾角等对切削齿所受冲击载荷的影响规律,分析PDC钻头钻进砾石层的损坏机制。结果表明:切削齿受到的冲击力随着砾石层胶结强度、砾石直径的增加而增大,随切削齿切削深度的增加呈指数增加;相同切削面积下,切削齿受到的冲击力随着后倾角的增大而增大;当冲击载荷大于切削齿的极限冲击强度时,切削齿将直接产生碎裂;即使冲击载荷不能达到切削齿的极限冲击强度,周而复始的冲击载荷达到切削齿的冲击韧性时,切削齿将发生冲击疲劳损坏。

关键词：砾岩 PDC钻头冲击载荷变化规律试验