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Thermostable α-Diimine Nickel Complexes with Substituents on Acenaphthequinone-backbone for Ethylene Polymerization

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Chinese Journal of Polymer Science 2020年第11期38卷 1214-1220,I0007页

作者： rui-fang zhang Yan-Hui Hou Xu-Ling Wei Ding-Ding Zhao Mi-Mi Cui Fei-Fan Zhai Xiang-Liu Li Bin-Yuan Liu Min Yang Hebei Key Laboratory of Functional Polymers Tianjin Key Laboratory of Chemical Process SafetyInstitute of Polymer Science and EngineeringHebei University of TechnologyTianjin 300130China State Key Laboratory of Separation Membranes and Membrane Processes School of Material Science and EngineeringTiangong UniversityTianjin 300160China Lanzhou Petrochemical Research Center Petrochemical Research Institute of CNPCLanzhou 730060China

In order to promote the thermostability of a-diimine nickel complex by ligand backbone structure,a series of α-diimine nickel complexes with substituents on acenaphthequinone backbone were synthesized and used as catalysts for ethylene *** the hydroxyethyl phenoxyl group was introduced to the acenaphthequinone-backbone,the thermal stability and activity of the catalyst could be significantly *** catalytic activity of complex C2[5-(4-(2-hydroxyethyl)phenoxyl)-N,N-bis(2,6-diisopropyl)acenaphthylene-1,2-diimine]nickel(Ⅱ)dibromide with isopropyl substituents on N-aryl reached 8.2×10^6g/(molNi·h)at 70℃and 2 *** activity of[5-(4-(2-hydroxyethyl)phenoxyl)-N,N-bis(2,6-dibenzhydryl-4-menthylphenyl)acenaphthylene-1,2-diimine]nickel(Ⅱ)dibromide(C3)still maintained at 6.7×10^5 g/(molNi·h)at 120℃.Compared with C3 containing bulky dibenzhydryl substituents,the activity of C2 was sensitive to the change of the polymerization ***,the polyethylenes obtained from complex C3 had lower branching ***,the molecular weight could reach 971 kg/mol,which is almost 5 times as much as that of the polyethylene obtained from complex C2.

关键词： α-Diimine nickel Ethylene polymerization Thermostability Ligand backbone structure

Theoretical Analysis on Fully Differential Cross-Sections for C^6＋ Single Ionization of Helium

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Chinese Journal of Chemical Physics 2014年第3期27卷 279-284页

作者： Hui-xiao Duan Shi-yan Sun Xiao-ying fang rui-fang zhang Xiang-fu Jia Center for Molecular Research School of Physics and Information Engineering Shanxi Normal UniversityLinfen 041004 China

The four-body model has been used to calculate the fully differential cross-sections （FDCS） for the single ionization of helium by 100 MeV/amu Ca^＋ impact in geometries. By comparing with experimental data and other theories, we find the results of four-body model are in very good agreement in the scattering plane, but poor agreement out of the scattering plane. Accordingly, the contributions of different scattering amplitudes to FDCS are analyzed. It is found that the cross sections due to the interference of the scattering amplitudes between projectile-target nucleus interaction and projectile-ejected electron interaction almost tend to experimental results around the recoil region in geometries. In particular in the perpendicular plane, the cross section originating from interference of the scattering amplitudes between projectile-target nucleus and projectile-ejected electron interactions yields an experimental double-peak structure in the angular distribution. However, this feature could not be presented by the interference of the three amplitudes. Thus, the failure of the fourbody model predicting the feature in this geometry may be attributed to an inappropriate weighting of the three amplitudes.

关键词： Ion-impact ionization Fully differential cross section Four-body model Interference effect

Multinuclear NMR study of lanthanide(Ⅲ)complexes of 1,2-PDTA in aqueous solution

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Chinese Journal of Chemistry 1993年第1期11卷 59-65页

作者： SONG,rui-fang zhang,Cun-Zhi LI,Fei HUA,Shi-Ying Institute of Theoretical Chemistry,Jilin University,Changchun 130023

The complexation oflanthanide(Ⅲ) cations with 1,2-propanediaminetetraacetate (1,2-PDTA) in aqueous solution has been investigated by ^(23)Na,^(35)Cl,~2H and ^(17)O NMR shift *** has been shown that the contact shifts are dominant for ^(17)O,^(35)Cl and ~2H (only for the heavier lanthanide series) and the pseudocontact shifts are dominant for ^(23)*** is suggested that the 1,2-PDTA ligand is bound pentadentately via the two nitrogens and the three carboxylates for the lighter lanthanide complexes,hexdentately via the two nitrogens and the four carboxylates for the heavier *** numbers of the water coordinated were *** small amount of chloride anion in inner coordination sphere was observed.

关键词： complexes of 1,2-PDTA in aqueous solution Multinuclear NMR study of lanthanide NMR

Gender specific association of neonatal characteristics and cardiovascular risk factors on carotid intima-media thickness in a Chinese cohort

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Chinese Medical Journal 2010年第17期123卷 2310-2314页

作者： LIN Xue ZHU Wen-ling TAN Li XU Tao XU rui-yi fang Quan zhang Shu-yang zhang Zhen-xin Chinese Academy of Medical Sciences & Peking Union Medical College Peking Union Medical College Hospital Beijing 100730 China

Background Multiple neonatal characteristics and adult cardiovascular risk factors are associated with the development of atherosclerosis, however little conclusive evidence exists characterizing the relative strength of these factors. In a large retrospective study, we investigated the association between both objective neonatal measurements and comprehensive adult cardiovascular risk factors with the development of atherosclerosis, quantified by carotid intima-media thickness （CIMT）. Further, we assessed the impact of gender on the relative impact of these risk *** CIMT, a measure of atherosclerosis, was determined by carotid ultrasound on 1568 participants （age 50-85）whose birth records were obtained from Peking Union Medical College Hospital. In addition, each participant was given a physical examination, and completed a medical questionnaire to identify a panel of cardiovascular risk factors. Multiple regression analysis was performed on the population and on the male and female cohorts individually, to identify the relative contribution of these risk factors to increased *** For the total population the Framingham score, renal function, adult abdominal circumference and mother＇s gestational age were associated with CIMT, accounting for 14.7%, 1.4%, 0.9%, and 0.2% of total variance, *** the male population the Framingham score, renal function, abdominal circumference and hemoglobin were the most significant risk factors for CIMT. Risk in the female population was associated with Framingham score, renal function,insulin resistance and gestational age. No relationship between birth weight or head circumference and CIMT were *** Adult cardiovascular risk factors were the most significantly associated with the development of atherosclerosis; however mother＇s age at birth was associated with CIMT, particularly in the female cohort. The relative contribution of the risk factors analyzed varied between the male and fem

关键词： atherosclerosis risk factors gestational age gender

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MnBiDy(Sm)永磁膜的结构和磁性

物理学报 1995年第2期44卷 292-298页

作者：方庆清方瑞宜张胜戴道生安徽省六安师范专科学校北京大学物理系北京100871

报道了采用真空蒸镀的方法制备的MnBiDy(Sm)永磁膜的结构和磁性.Mn:Bi:Dy(Sm)的投料比为2:1:0.10.薄膜经过退出处理(350—425℃,保温4h)后,具有NiAs型hcp结构,C轴垂直膜面,剩余磁感应强度B=3.4-6.5kG,内禀矫顽力_MH_c≈3-8kOe,最大磁能... 详细信息

报道了采用真空蒸镀的方法制备的MnBiDy(Sm)永磁膜的结构和磁性.Mn:Bi:Dy(Sm)的投料比为2:1:0.10.薄膜经过退出处理(350—425℃,保温4h)后,具有NiAs型hcp结构,C轴垂直膜面,剩余磁感应强度B=3.4-6.5kG,内禀矫顽力_MH_c≈3-8kOe,最大磁能积(BH)_(max)=13.39MG·Oe.实验发现,薄膜厚度对MnBiDy(Sm)永磁膜的结构和磁性具有很大的影响.

关键词： MnBiDy(Sm) 永磁膜结构磁性

Engineered Cancer Nanovaccines:A New Frontier in Cancer Therapy

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Nano-Micro Letters 2025年第2期17卷 134-168页

作者： Yijie Wang Congrui Liu Chao fang Qiuxia Peng Wen Qin Xuebing Yan Kun zhang Central Laboratory and Department of Medical Ultrasound Sichuan Academy of Medical SciencesSichuan Provincial People’s HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaNo.32West Second SectionFirst Ring RoadChengdu 610072People’s Republic of China Department of Stomatology and Central Laboratory School of MedicineShanghai Tenth People’s HospitalTongji UniversityNO.301 Yan‑Chang‑Zhong RoadShanghai 200072People’s Republic of China Jiangsu Provincial Innovation and Practice Base for Postdoctors Suining People’s HospitalAffiliated Hospital of Xuzhou Medical UniversityNo.2Bayi West RoadSuiningXu Zhou 221000Jiangsu ProvincePeople’s Republic of China

Vaccinations are essential for preventing and treating disease,especially cancer nanovaccines,which have gained considerable interest recently for their strong anti-tumor immune *** can prompt the immune system to generate antibodies and activate various immune cells,leading to a response against tumor tissues and reducing the negative effects and recurrence risks of traditional chemotherapy and *** enhance the flexibility and targeting of vaccines,nanovaccines utilize nanotechnology to encapsulate or carry antigens at the nanoscale level,enabling more controlled and precise drug delivery to enhance immune *** nanovaccines function by encapsulating tumor-specific antigens or tumor-associated antigens within *** small size of these nanomaterials allows for precise targeting of T cells,dendritic cells,or cancer cells,thereby eliciting a more potent anti-tumor *** this paper,we focus on the classification of carriers for cancer nanovaccines,the roles of different target cells,and clinically tested cancer nanovaccines,discussing strategies for effectively inducing cytotoxic T lymphocytes responses and optimizing antigen presentation,while also looking ahead to the translational challenges of moving from animal experiments to clinical trials.

关键词： Cancer nanovaccines Immunotherapy Nanobiotechnology Immune targets Signaling pathway

Structure of Palladium( Ⅱ ) Complex with 2-Hydroxy-propane 1, 3-diamine-N,N,N' N',-tetraacetic Acid

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Chemical Research in Chinese Universities 1992年第4期8卷 399-404页

作者： SONG rui-fang, zhang Cun-zhi and LI Fei (Institute of Theoretical Chemistry, Jilin University, Changchun, 130023)JIN Song-chun and JTN Zhong-sheng (Changchun Institute of Applied Chemistry, Academia Sinica, Changchun, 130022)

The reaction of PdCl2 in water with 2-hydroxypropane-1, 3-diaminetetraacetic acid (HPDTA) gave the complex Pd (C11H16N2O9)·1. 5H2O, which was characterized by elemental analysis, IR, NMR and single-crystal X-ray diffraction. The spectroscopic and X-ray diffraction data show that Pd ( Ⅱ ) is coordinated by two nitrogen atoms and two car-boxylic oxygen atoms. The complex crystallizes in monoclinic space group Pc with a = 1. 1240(2), b=1. 1183(2), c=1. 2597(3) nm, β=96. 33(2)°V=1. 5737(6) nm3, Z = 4, R= 0.038. The structure contains two crystallographically independent molecules which have slightly different orientations and are connected by hydrogen bonds.

关键词： Structure Pd( Ⅱ )-HPDTA Complex

Liposomes as versatile agents for the management of traumatic and nontraumatic central nervous system disorders:drug stability,targeting efficiency,and safety

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Neural Regeneration Research 2025年第7期20卷 1883-1899页

作者： Mingyu zhang Chunyu Xiang Renrui Niu Xiaodong He Wenqi Luo Wanguo Liu rui Gu Department of Orthopedic Surgery China-Japan Union Hospital of Jilin UniversityChangchunJilin ProvinceChina

Various nanoparticle-based drug delivery systems for the treatment of neurological disorders have been widely ***,their inability to cross the blood–brain barrier hampers the clinical translation of these therapeutic *** are nanoparticles composed of lipid bilayers,which can effectively encapsulate drugs and improve drug delivery across the blood–brain barrier and into brain tissue through their targeting and ***,they can potentially treat traumatic and nontraumatic central nervous system *** this review,we outlined the common properties and preparation methods of liposomes,including thin-film hydration,reverse-phase evaporation,solvent injection techniques,detergent removal methods,and microfluidics ***,we comprehensively discussed the current applications of liposomes in central nervous system diseases,such as Alzheimer's disease,Parkinson's disease,Huntington's disease,amyotrophic lateral sclerosis,traumatic brain injury,spinal cord injury,and brain *** studies related to liposomes are still in the laboratory stage and have not yet entered clinical ***,their application as drug delivery systems in clinical practice faces challenges such as drug stability,targeting efficiency,and ***,we proposed development strategies related to liposomes to further promote their development in neurological disease research.

关键词： Alzheimer's disease amyotrophic lateral sclerosis brain tumors central nervous system Huntington's disease liposome drug delivery neurological disorders Parkinson's disease spinal cord injury traumatic brain injury

Exploration of Gas‑Dependent Self‑Adaptive Reconstruction Behavior of Cu_(2)O for Electrochemical CO_(2)Conversion to Multi‑Carbon Products

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Nano-Micro Letters 2025年第3期17卷 280-296页

作者： Chaoran zhang Yichuan Gu Qu Jiang Ziyang Sheng Ruohan Feng Sihong Wang Haoyue zhang Qianqing Xu Zijian Yuan fang Song State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Structural reconstruction of electrocatalysts plays a pivotal role in catalytic performances for CO_(2)reduction reaction(CO_(2)RR),whereas the behavior is by far superficially ***,we report that CO_(2)accessibility results in a universal self-adaptive structural reconstruction from Cu_(2)O to Cu@CuxO composites,ending with feeding gas-dependent microstructures and catalytic *** CO_(2)-rich atmosphere favors reconstruction for CO_(2)RR,whereas the CO_(2)-deficient one prefers that for hydrogen evolution *** the assistance of spectroscopic analysis and theoretical calculations,we uncover a CO_(2)-induced passivation behavior by identifying a reductionresistant but catalytic active Cu(I)-rich amorphous layer stabilized by*CO ***,we find extra CO production is indispensable for the robust production of *** inverse correlation between durability and FECO/FEC2H4 is disclosed,suggesting that the selfstabilization process involving the absorption of*CO intermediates on Cu(I)sites is essential for durable *** by this insight,we design hollow Cu_(2)O nanospheres for durable and selective CO_(2)RR electrolysis in producing *** work recognizes the previously overlooked passivation reconstruction and self-stabilizing behavior and highlights the critical role of the local atmosphere in modulating reconstruction and catalytic processes.

关键词： CO_(2)reduction reaction Electrocatalysts Cu_(2)O Reconstruction Self-adaptive electrocatalysis