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| 1 | Synthesis and characteriza-tion of two new types of oxovanadium complexes with pyrazole as ligand显示文摘At room temperature, two new different oxovanadium complexes with simple pyrazole (C3H4N2) as ligand were synthesized. VO(pz)4(SO4)? H2O (1) (pz: pyrazole) is a mono-nuclear oxovana- dium complex with pyrazole as terminal ligands. V2O2(μ-pz)(μ-OOSO2)(μ-OCH3)(pz)4 (2) is bi-nuclear oxovanadium complex containing three different bridges, which are pyrazolate, sulphate and methoxy, respectively. The two complexes were characterized by IR, elemental analyses, thermal analyses and X-ray diffraction. The crystal structural data of the complexes 1 and 2 are given as follows: Complex 1, orthorhombic, Pna21, a = 14.547(2) ?, b =10.895(2) ?, c =11.835(2) ?; α=β=γ=90°, V=1875.8(5) ?3, Z = 4, R1 = 0.0485, WR2 = 0.1092. Complex 2, triclinic, P1 , a =8.377(2) ?, b =9.928(2) ?, c = 16.527(3) ?, α = 85.54(3)°, β = 80.92(3)°, γ = 87.92(3)°, R1 = 0.1461, WR2 = 0.4444. The study of non-thermal kinetic de- composition shows that, for complex 1, the possible reaction mechanisms of the two steps are nucleation and growth n=1/3, and three-dimensional pervasion n=2, respectively, and the kinetic equations may be expressed as dα/dT = (A/β)exp(?E/RT){1/3(1?α) [?In(1?α)]?2} and dα/dT = (A/β)exp(?E/RT){3/2(1?α)2/3 [1?(1?α)1/3] ?1}, respectively; for complex 2, the pos- sible reaction mechanisms of the two steps are chemical reaction, and three-dimensional pervasion n=2, respectively; the kinetic equations may be ex- pressed as dα/dT = (A/β)exp(?E/RT)[(1?α)2], anddα/dT = (A/β)exp(?E/RT){3/2(1?α)2/3[1?(1?α)1/3] ?1}, respectively. | XING Yongheng ZHANG Yuanhong XU Yongting ZHANG Baoli NIU Shuyun BAI Fengying | 2006 | Chinese Science Bulletin2006，51，18： | 3 |
| 2 | Crystal structure and surface photo-electric property of Mn(Ⅱ) coordination supramolecules显示文摘Two Mn(II)coordination supramolecules,[Mn2(C8H7O2)4(phen)2(μ-H2O)](1)and [Mn2(btec)(phen)2(H2O)6].2H2O(2)(phen=1,10-phenanthroline,H4btec=1,2,4,5-benzenetetracarboxylic acid),were synthesized by hydrothermal method.The crystal structures of the complexes were determined by X-ray single crystal diffraction.The result indicates that(1)and(2)are both binuclear Mn(II)complexes.The existence of hydrogen bonds makes the binuclear complexes become further connected to coordination su-pramolecules,which possess 1D and 3D infinite structures respectively.The complexes were identified by IR,UV-Vis,surface photovoltage spectrum(SPS)and field-induced surface photovoltage spectrum(FISPS).The results of SPS for the complexes indicate that they both exhibit positive surface photo-voltage response bands in the range of 300―600 nm.The SPS phase spectrum and FISPS of com-plexes indicate that they show certain p-type semiconductor characteristic.However,the intensity,position and number of the SPV response bands are different obviously.The difference of the SPV re-sponse bands is mainly attributed to the different structures of the complexes and the different coor-dination environment of Mn(Ⅱ)in the two complexes.This paper discusses the action of hydrogen bonds in the construction of the supramolecule and the change on the surface photovoltage of com-plex in different coordination environment. | ZHANG Li NIU ShuYun JIN Jing SUN LiPing | 2008 | Chinese Science Bulletin2008，53，3： | 2 |
| 3 | Single-walled carbon nanohorn as new solid-phase extraction adsorbent for determination of 4-nitrophenol in water sample显示文摘 | ZHU Shuyun NIU Wenxin LI Haijuan | 2009 | Talanta2009，79，5： | 1 |
| 4 | Blue luminescence of nanocrystalline CaZrO 3 :Tm phosphors synthesized by a modified Pechini sol–gel method显示文摘 | Hongwu Zhang Xiaoyan Fu Shuyun Niu Qin Xin | 2008 | Journal of Luminescence2008，，8： | 1 |
| 5 | Synthesis and photoluminescence properties of Eu 3+ -doped AZrO 3 (A显示文摘 | Hongwu Zhang Xiaoyan Fu Shuyun Niu Qin Xin | 2007 | Journal of Alloys and Compounds2007，，1： | 1 |
| 6 | Photoluminescence of YVO 4 :Tm phosphor prepared by a polymerizable complex method显示文摘 | Hongwu Zhang Xiaoyan Fu Shuyun Niu Gongquan Sun Qin Xin | 2004 | Solid State Communications2004，，8： | 1 |
| 7 | Crystal structure and photoelectricity property of Fe(Ⅱ/Ⅲ) coordination supermolecules显示文摘Three new mixed-ligand Fe(Ⅱ/Ⅲ) complexes [Fe2(μ2–btec)( μ2–H2btec)(phen)2(H2O)2]n (1), [Fe2(btec) (phen)2(H2O)4] (2), and {[Fe(o-pha)(phen)(H2O)]·H2O}n (3) (phen=1,10-phenanthroline, o-H2pha=o-phthalic acid, H4btec=1,2,4,5-benzenetetracarboxylic acid) have been hydrothermally synthesized and detected by single crystal X-ray diffraction, showing that complexes (1) and (2) are both bridged by the betc4? ligands to form 1D chain and dinuclear structure and complex (3) is bridged by the o-pha groups to form 1D chain structure. The coordinated modes of the carboxyl groups adopt μ2-η1η1ηη1η1 and μ2-η2η1 respectively in complexes (2) and (3). The betc groups in complex (1) show two different coordinated modes: μ2-η1η1η1η1 and μ2-η1η1. In addition, the hydrogen bonds and π…π type interactions make the complex molecule further connect to three-dimensional and two-dimensional networks respectively. These complexes are detected by IR, UV-Vis-NIR and surface photovoltage spectrum (SPS). The SPS of complexes (1)–(3) indicate that there are positive SPV responses in the range of 300–600 nm and show p-type semiconductor characteristic. Because the structure, the valence and the coordinative environment of the Fe ions are all different in the three complexes, the intensity, position and the number of the response bands are different obviously. The results of SPS are corresponding with UV-Vis-NIR spectra. | SHI ZhongFeng JIN Jing ZHAO LiMin CHEN Peng NIU ShuYun | 2010 | Chinese Science Bulletin2010，55，2： | 1 |
| 8 | A sort of radius to describe the size of an atom显示文摘 | YANG Zhongzhi NIU Shuyun | 1991 | Chinese Sci Bull1991，36，11： | 1 |
| 9 | 3D-printed cell-free PCL-MECM scaffold with biomimetic micro-structure and micro-environment to enhance in situ meniscus regeneration显示文摘Despite intensive effort was made to regenerate injured meniscus by cell-free strategies through recruiting endogenous stem/progenitor cells,meniscus regeneration remains a great challenge in clinic.In this study,we found decellularized meniscal extracellular matrix(MECM)preserved native meniscal collagen and glycosaminoglycans which could be a good endogenous regeneration guider for stem cells.Moreover,MECM significantly promoted meniscal fibrochondrocytes viability and proliferation,increased the expression of type II collagen and proteoglycans in vitro.Meanwhile,we designed 3D-printed polycaprolactone(PCL)scaffolds which mimic the circumferential and radial collagen orientation in native meniscus.Taken these two advantages together,a micro-structure and micro-environment dually biomimetic cell-free scaffold was manipulated.This cell-free PCL-MECM scaffold displayed superior biocompatibility and yielded favorable biomechanical capacities closely to native meniscus.Strikingly,neo-menisci were regenerated within PCL-MECM scaffolds which were transplanted into knee joints underwent medial meniscectomy in rabbits and sheep models.Histological staining confirmed neo-menisci showed meniscus-like heterogeneous staining.Mankin scores showed PCL-MECM scaffold could protect articular cartilage well,and knee X-ray examination revealed same results.Knee magnetic resonance imaging(MRI)scanning also showed some neo-menisci in PCL-MECM scaffold group.In conclusion,PCL-MECM scaffold appears to optimize meniscus regeneration.This could represent a promising approach worthy of further investigation in preclinical applications. | Weimin Guo Mingxue Chen Zhenyong Wang Yue Tian Jinxuan Zheng Shuang Gao Yangyang Li Yufeng Zheng Xu Li Jingxiang Huang Wei Niu Shuangpeng Jiang Chunxiang Hao Zhiguo Yuan Yu Zhang Mingjie Wang Zehao Wang Jiang Peng Aiyuan Wang Yu Wang Xiang Sui Wenjing Xu Libo Hao Xifu Zheng Shuyun Liu Quanyi Guo | 2021 | Bioactive Materials2021，6，10： | 1 |
| 10 | Photoluminescence of YVO 4 :Tm phosphor prepared by a polymerizable complex method显示文摘 | Hongwu Zhang Xiaoyan Fu Shuyun Niu Gongquan Sun Qin Xin | 2004 | Solid State Communications2004，，8： | 1 |
| 11 | 显示文摘 | Zhang Hongwu Fu Xiaoyan Niu Shuyun | 2008 | Journal of Alloys and Compounds2008，459，12： | 1 |
| 12 | Exponential Stability and Periodic Solutions of FCNNs with Variable Coefficients and Time-varying Delays显示文摘 | Shuyun Niu Haijun Jiang Zhidong Teng | 2008 | Neurocomputing2008，，71： | 1 |
| 13 | Synthesis, spectra, structure and quantum chemistry study on two novel oxovanadium complexes with hydrotris (pyrazolyl) borate ligands显示文摘Two novel oxo-vanadium complexes of VO(HB(pz)3)(pzH)(SCN) (1) and VO(HB(3,5-Me2pz)3) (3,5-Me2pzH)(SCN)(SCNH)2 (2) with tris(pyrazolyl) hydroborate ligands were prepared by the reaction of VOSO4?nH2O, KSCN with Na(HB(pz)3), pyrazole, or Na(HB(3,5-Me2pz)3) and methyl-substituted pyrazole in the solution of MeOH, respectively. The complexes were characterized by element analysis, IR, and UV- vis spectra. In the mean time, the fluorescence spec-trum was studied too, and the result indicates that the luminescence of the complexes is related to the in-teraction between oxovanadium ion and tris(pyra- zolyl) hydroborate ligands. In addition, structures of oxovanadium complexes 1 and 2 were determined by X-ray diffraction. The electronic structures and the bonding characters of the two complexes were ana-lyzed with ab initio calculations. | XING Yongheng SUN Zheng YUAN Houqun GE Maofa NIU Shuyun BAI Fengying | 2006 | Chinese Science Bulletin2006，51，6： | 0 |
| 14 | Newcastle disease virus suppresses antigen presentation via inhibiting IL-12 expression in dendritic cells显示文摘As a potential vectored vaccine,Newcastle disease virus(NDV)has been subject to various studies for vaccine development,while relatively little research has outlined the immunomodulatory effect of the virus in antigen presentation.To elucidate the key inhibitory factor in regulating the interaction of infected dendritic cells(DCs)and T cells,DCs were pretreated with the NDV vaccine strain LaSota as an inhibitor and stimulated with lipopolysaccharide(LPS)for further detection by enzyme-linked immunosorbent assay(ELISA),flow cytometry,immunoblotting,and quantitative real-time polymerase chain reaction(qRT-PCR).The results revealed that NDV infection resulted in the inhibition of interleukin(IL)-12p40 in DCs through a p38 mitogen-activated protein kinase(MAPK)-dependent manner,thus inhibiting the synthesis of IL-12p70,leading to the reduction in T cell proliferation and the secretion of interferon-(IFN-),tumor necrosis factor-α(TNF-α),and IL-6 induced by DCs.Consequently,downregulated cytokines accelerated the infection and viral transmission from DCs to T cells.Furthermore,several other strains of NDV also exhibited inhibitory activity.The current study reveals that NDV can modulate the intensity of the innate-adaptive immune cell crosstalk critically toward viral invasion improvement,highlighting a novel mechanism of virus-induced immunosuppression and providing new perspectives on the improvement of NDV-vectored vaccine. | Fulong NAN Wenlong NAN Xin YAN Hui WANG Shasha JIANG Shuyun ZHANG Zhongjie YU Xianjuan ZHANG Fengjun LIU Jun LI Xiaoqiong ZHOU Delei NIU Yiquan LI Wei WANG Ning SHI Ningyi JIN Changzhan XIE Xiaoni CUI He ZHANG Bin WANG Huijun LU | 2024 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2024，25，3： | 0 |
| 15 | Crystal structure and magnetism of the binuclear Gd(Ⅲ) complex Gd_2(C_12H_8N_2)_2(C_6H_5COO)_6显示文摘In the medium of H2O, C2H5OH and HAC, the reaction of Gd(NO3)3-6H2O with C6H5COONa and C12H8N2 produced a novel binuclear Gd(Ⅲ) complex in formula [Gd2(C12H8N2)2 (C6H5COO)6]. Crystallographic data: crystal system, triclinic; space group, P l ; unit celi dimensions, α=1.191 9(2) nm, b =1.244 2(2) nm, c = 1.080 4(2) nm, α = 93.57(3)°, β= 113.33(3)°, y= 105.06(3)°, Z =1. The final R = 0.037 6. The magnetic measurement of the crystal powder in the temperature region of l .5-300 K shows that this complex possesses antifer- romagnetic property with fitting magnetic parameters .J = -0.471 and g =1.975. | NIU Shuyun , JIN Jing, JIN Xianglin, CONG Yao & YANG Zhongzhi1. Department of Chemistry, Liaoning Normal University, Dalian 116029, China 2. Department of Chemistry, Peking University, Beijing 100871, China | 2000 | Chinese Science Bulletin2000，45，8： | 0 |
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