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Chemical Research in Chinese Universities 1998年第4期14卷 66-71页

作者： WANG Lin , MA Xue yan, DING Lan, ZHAO Da qing and NI Jia zuan (Laboratory of Rare Earth Chemistry and Physics, changchun Institute of Applied Chemistry Chinese Academy of Sciences, changchun, 130022) FU Ping ping (Norman Bethune Universit Chinese Acad Sci Changchun Inst Appl Chem Lab Rare Earth Chem & Phys Changchun 130022 Peoples R China Norman Bethune Univ Med Sci Changchun 130021 Peoples R China Baicheng Normal Coll Dept Chem Baicheng 137000 Peoples R China

ＩｎｔｒｏｄｕｃｔｉｏｎＧｌｕｔａｔｈｉｏｎｅｐｅｒｏｘｉｄａｓｅ（ＧＰＸ）ｆｕｎｃｔｉｏｎｓａｓｏｎｅｏｆａｎｔｉｏｘｉｄａｎｔｄｅｆｅｎｃｅｅｎｚｙｍｅｓｔｏｒｅｄｕｃｅａｗｉｄｅｖａｒｉｅｔｙｏｆｉｎｔｒａｃｅ... 详细信息

ＩｎｔｒｏｄｕｃｔｉｏｎＧｌｕｔａｔｈｉｏｎｅｐｅｒｏｘｉｄａｓｅ（ＧＰＸ）ｆｕｎｃｔｉｏｎｓａｓｏｎｅｏｆａｎｔｉｏｘｉｄａｎｔｄｅｆｅｎｃｅｅｎｚｙｍｅｓｔｏｒｅｄｕｃｅａｗｉｄｅｖａｒｉｅｔｙｏｆｉｎｔｒａｃｅｌｕｌａｒｐｅｒｏｘｉｄｅｓ，ｉｎ...

关键词： Glutathione peroxidase(GPX) Catalytic antibody Hydrophobic haptene conjugates

Ligand centered electrocatalytic efficient CO_(2) reduction reaction at low overpotential on single-atom Ni regulated molecular catalyst

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Nano Research 2022年第7期15卷 5816-5823页

作者： Jiazhi Wang Qi Hao Haixia Zhong Kai Li Xinbo Zhang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China University of Science and Technology of China Hefei 230026China Key Laboratory of Automobile Materials Ministry of EducationJilin UniversityChangchun 130022China Center for Advancing Electronics Dresden(cfaed)and Faculty of Chemistry and Food Chemistry Technische Universität DresdenDresden 01062Germany

Electrochemical CO_(2) reduction reaction(CO_(2)RR)into value-added chemicals/fuels is crucial for realizing the sustainable carbon cycle while mitigating the energy ***,it is impeded by the relatively high overpotential and low energy efficiency due to the lack of efficient ***,we develop an isolated single-atom Ni catalyst regulated strategy to activate and stabilize the iron phthalocyanine molecule(Ni SA@FePc)toward a highly efficient CO_(2)RR process at low *** well-defined and homogenous catalytic centers with unique structures confer Ni SA@FePc with a significantly enhanced CO_(2)RR performance compared to single-atom Ni catalyst and FePc molecule and afford the atomic understanding on active sites and catalytic *** expected,Ni SA@FePc exhibits a high selectivity of more significant Faraday efficiency(≥95%)over a wide potential range,a high current density of~252 mA·cm^(−2) at low overpotential(390 mV),and excellent long-term stability for CO_(2)RR to CO.X-ray absorption spectroscopy measurement and theoretical calculation indicate the formation of NiN_(4)-O_(2)-FePc heterogeneous structure for Ni SA@*** CO_(2)RR prefers to occur at the raised N centers of NiN4-O_(2)-FePc heterogeneous structure for Ni SA@FePc,which enables facilitated adsorption of*COOH and desorption of CO,and thus accelerated overall reaction kinetics.

关键词： single-atom Ni iron phthalocyanine molecular catalyst carbon dioxide reduction reaction ultra-low overpotential

HG-Induced sEVs Mediate Biomechanics of HK-2 Cells

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Nanomanufacturing and Metrology 2023年第4期6卷 81-91页

作者： Fan Yang Jiajia Wang Tuoyu Ju Shuwei Wang Kaige Qu Zhengxun Song Yujuan Chen Zuobin Wang International Research Centre for Nano Handling and Manufacturing of China Changchun University of Science and TechnologyChangchun 130022China Centre for Opto/Bio-Nano Measurement and Manufacturing Zhongshan Institute of Changchun University of Science and TechnologyZhongshan 528437China Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing Changchun University of Science and TechnologyChangchun 130022China Afliated Hospital Jilin Medical UniversityJilin 132013China JR3CN&IRAC University of BedfordshireLuton LU13JUUK

Small extracellular vesicles (sEVs) participate in the pathological progression of high glucose (HG)-induced kidney injury, which is closely related to diabetic nephropathy. How sEVs specifically mediate the cell biomechanics underlying HG injury is unclear. Herein, we utilized a versatile atomic force microscope to determine the contributions of sEVs in HG-induced cellular injury. The sEVs extracted from the culture medium of human proximal tubule kidney (HK-2) cells treated by HG for 72 h (HG-induced sEVs) were verified and analyzed by multiple techniques, and the results indicated the effective production and the effect of dehydration on the shape of HG-induced sEVs. Further investigation on the morphologies of HK-2 cells treated by HG-induced sEVs showed that the surface roughness of the HK-2 cells increased, and their pseudopodia transitioned from lamellipodia to filopodia, with almost doubled mean pseudopodia length. Quantitative analysis of the mechanical responses of the cells revealed that the mean Young’s modulus increased by 26.2%, and the mean adhesion decreased by 36.8%. The indirect mediation of cellular biomechanics guided by HG-induced sEVs was evaluated by comparing it with previously studied direct HG injury. The HG-induced sEVs caused a greater reduction in cell adhesion and an increase in Young’s modulus compared with direct HG stimulation. This work suggested the ability of HG-induced sEVs to elicit specific biomechanical responses during HG injury, advancing the understanding of the injury mechanism caused by HG. The comparison of the cellular biomechanics between direct and indirect HG stimulations through HG-induced sEVs can be beneficial for the diagnosis and treatment of kidney injury.

关键词： AFM Cellular biomechanics HG-induced sEVs HG HK-2 cells

A METHOD OF CALCULATING THE PHOTO-ELECTRON SPECTRA FOR ORGANIC CHAIN-SHAPE MACROMOLECULES

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Chinese Science Bulletin 1989年第13期34卷 1095-1099页

作者：于恒泰杨忠志 Institute of Theoretical Chemistry Jilin University Changchun

The concept of localized molecular orbital (LMO) is very close to that of familiar valence bond orbital. It is imaginary and intuitive. Since it was presented some 40 years ago, chemists have paid attention to it. There are now many methods of localization to look for and determine appropriate LMO. An important application of it is the summarization of photoelectron spectra.

关键词： chain organic molecules LMO PES

Random Binary Brush Architecture Enhances both Ionic Conductivity and Mechanical Strength at Room Temperature

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Chinese Journal of Polymer Science 2018年第1期36卷 78-84页

作者： Yu-Feng Lyu Zhi-Jie Zhang Chang Liu Zhi Geng Long-Cheng Gao Quan Chen Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry and EnvironmentBeihangUniversityBeijing 100191China State KeyLaboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

The ionic conductivity and the mechanical strength are two key factors for the performance of poly（ethylene oxide）（PEO） based polyelectrolytes. However, crystallized PEO suppresses ion conductivity at low temperature and melted PEO has low mechanical strength at high temperature. Here, random binary brush copolymer composed of PEO-and polystyrene（PS）-based side chains is synthesized. PEO crystallinity is suppressed by the introduction of PS brushes. Doping with lithium trifluoromethanesulfonate（Li Tf） induces microphase separation. Due to a random arrangement of the brushes, the microphase segregation is incomplete even at high salt loading, which provides both high ionic conductivity and high mechanical strength at room temperature. These results provide opportunities for the design of polymeric electrolytes to be used at room temperature.

关键词： Binary brush copolymer PEO Ionic conductivity Phase separation

A New Type of Polymer-Supported Metallocene Catalyst for Ethylene Polymerization

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Chinese Chemical Letters 2001年第3期12卷 257-260页

作者： Guang Qian YU De Ze ZHANG Fu SHUN Li Jun QIAO Tao TANG Bao Tong HUANG State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesPolymer Chemistry LaboratoryChemistry Academy of Sciences and China Petro-Chemical CorporationChangchun 130022

A new polymer-supported metallocene catalyst has been prepared, The polymer-supported metallocene displayed considerably high activity in ethylene polymerization, the highest being 3.62x10(7) gPE/molZr.h, the molecular weight of the polyethylene produced was Mn = 1.29x10(5). about 3-4 times those of corresponding homogeneous zirconocenes. The polymer-supported metallocene keeps the characteristics of homogeneous metallocene catalysts, and offers some features, such as adaptable to gas phase and slurry processes: easy to prepare in low cost: relatively high activity and lower MAO/Zr ratio; lower inorganic residues in the polyolefins as compared to cases of SiO2, Al2O3 or MgCl2; unitary active structure, no complex surface as with SiO2; good control of morphology of the resulting polymer.

关键词： Polymer-support metallocene catalyst ethylene polymerization

The ^(13)C-NMR Study of the Conformation of L-Arginine in Aqueous Solution by Lanthanide Probes

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Journal of Rare Earths 1991年第1期9卷 10-14页

作者：任吉民裴奉奎王文韵 changchun Institute of Applied Chemistry Academia SinicaChangchun 130022China

The heavy lanthanide ions(Dy,Ho,Er,Tm and Yb)were used to probe the conformation of L-arginine in aqueous *** results showed that the contact contribution to the observed^(13)C paramagnetic shift is very small for nuclei four or more bonds away from the bound lanthanide ion and it is significant for those in close proximity to the lanthanide *** overall conformation of L-arginine was established by fitting the calculated geometric factors for the corresponding experimental *** the lanthanide-L-arginine complex,the whole backbone of the ligand is located outsite the zero-dipolar shift cone of the lanthanide ion with the carboxyl group selectively coordinated to the *** calculated RE-O distance is 0.21 nm for the bidentate coordination mode and the ligand is in an extended conformation in the solution with the molecular backbone corresponding to the trans form.

关键词： Rare earth ^(13)C-NMR Induced shift L-arginine Conformation

Relationship between plant species diversity and patch characteristics in a marsh in the Sangjiang Plain,China—Using Yaluhe farm as an example

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Progress in Natural Science:Materials International 2007年第6期17卷 664-669页

作者： Sun Zhonglin1, Xing Fu1,2, Lu Xianguo2, Xu Kun1, Yu Lili1 and Ni Hongwei3(1. Key Laboratory of Vegetation Ecology, Ministry of Education, changchun 130024, China 2. Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, changchun 130012, China 3. Natural Resources Instute of Heilongjiang Academy of Sciences, Harbin 150040, China) Key Laboratory of Vegetation Ecology Changchun 130024 China Northeast Institute of Geography and Agricultural Ecology Chinese Academy of Sciences Changchun 130012 China Natural Resources Institute Heilongjiang Academy of Sciences Harbin 150040 China

Based on Quick Bird satellite image data, the present study examined small-scale herbaceous community patches in the marsh of the Sanjiang Plain and measured patch characteristics such as the area, perimeter and shape by GPS. The coenological characteristics of the patches were investigated using quadrat method, and the vascular plant species were recorded using transect method. A total of 219 plant species were recorded, which represents 12.2% of the vascular flora in Heilongjiang Province. Our results showed that species number S correlated with patch area and perimeter; richness index (R) correlated with patch perimeter; Simpson index (D) correlated with patch area and perimeter/area; Shannon-Wiener index (H′) correlated with patch area, perimeter and perimeter/area; Evenness index (Jsw) correlated with perimeter/area. Both S and R have significant difference between different size of patches. Plant diversity in the small-scale herbaceous communities tended to increase with the patch area and perimeter. We concluded that edge effects and the habitat heterogeneity of the patches are important in determining the number of species. The relative smoothness of the patch edges also affects the plant diversity of the patches. The richness of plant species in the marsh in the Sanjiang Plain is highly sensitive to the small-scale patches, which continues to play an important role in preserving plant diversity in the local area.

关键词： marsh in Sanjiang Plain plant diversity community patch habitat fragmentation small scale edge effect.

A New Oxide Ion Conductor： La3GaMo2O12

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Chinese Journal of Chemistry 2006年第8期24卷 993-996页

作者：夏天李佳艳李芹刘向东孟健曹学强 Key Laboratory of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 China Graduate School of the Chinese Academy of Sciences Beijing 100049 China

A new oxide ion conductor, La3GaMo2O12, with a bulk conductivity of 2.7× 10^- 2 S·cm ^-1 at 800 ℃ in air atmosphere was prepared by the traditional solid-state reaction. The room temperature X-ray diffraction data could be indexed on a monoclinic cell with lattice parameters of a=0.5602（2） nm, b=0.3224（1） nm, c= 1.5741（1） nm, β= 102.555（0）°, V=0.2775（2） nm^3 and space group Pc（7）. Ac impedance measurements in various atmospheres further support that it is an oxide ion conductor. This material was stable in various atmospheres with oxygen partial pressure p（O2） ranging from 1.0× 10^5 to 1.0× 10^-7 Pa at 800 ℃. A reversible polymorphic phase transition occurred at elevated temperatures as confirmed by the differential thermal analysis and dilatometric measurement.

关键词： oxide ion conductor bulk conductivity ac impedance phase transition

A novel strategy for improving upconversion luminescence of NaYF4：Yb, Er nanocrystals by coupling with hybrids of silver plasmon nanostructures and poly（methyl methacrylate） photonic crystals

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Nano Research 2013年第11期6卷 795-807页

作者： Wen Xu Yongsheng Zhu Xu Chen Jing Wang Li Tao Sai Xu Tong Liu Hongwei Song State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University 2699 Oianjin Street Changchun 130012 China College ofPhysics Jilin University 2699 Oianjin Street Changchun 130012 China

The coupling of upconversion nanophosphors （UCNPs） with the surface plasmonic resonance （SPR） of noble metals is a promising way to improve luminescent efficiency of UCNPs; however, it is still a challenge to achieve stable, reproducible and effective upconversion luminescence （UCL） enhancement through such coupling. In this work, we present a novel strategy to improve UCL of NaYF4：ybB,Er3. UCNPs, by combining the near-field coupling of SPR of silver and the far-field coupling of poly（methyl methacrylate）（PMMA） opal photonic crystals （OPCs） with the UCNPs. In order to control the effective interaction distance between the UCNPs and the SPR, a porous silver film consisting of randomly distributed silver nanoparticles （NPs）（〉 100 nm） was prepared which demonstrated strong SPR over a broad wavelength range, and its coupling to the UCNPs was found to be much stronger than that of a dense film. In the far-field coupling of OPCs, the photonic stop band （PSB） of the PMMA OPCs was tuned to 980 nm, matching exactly the excitation light. By modulating the particle size of the UCNPs, and the direction and excitation power of the incident light, a maximum enhancement of 60-fold was observed, which is an important advance for metaMnduced UCL enhancement systems.

关键词： upconverslon porous Ag film near-field coupling opal photonic crystals(OPCs) far-field coupling