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synthesis and in vitro Evaluation of Manganese（Ⅱ）-p.rp.yrin Modified with Chitosan Oligosaccharides as p.tential MRI Contrast Agents

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Chemical Research in Chinese Universities 2014年第4期30卷 549-555页

作者： LIU Yun HUANG Yan BOAMAH p.ter Osei ZHANG Qi LIU Yuanyuan HUA Mingqing School of Chemistry and Chemical Engineering Jiangsu University Zhenjiang 212013 P. R. China Hainan p.ovincial key lab.of Fine Chemistry Hainan University Haikou 570228 P. R. China

Mn-TCp.-CSn（n=6,1 1,20） as a typ. of p.tential magnetic resonance imaging（MRI） contrast agents were synthesized via manganese（Ⅱ） meso-tetra（4-carboxyp.enyl） p.rp.yrin（Mn-TCp.） modified with chitosan oligosaccharides（CSn）.Exp.rimental data of infared（IR）,UV-Vis,MS,inductively coup.ed p.asma-atomic emission sp.ctrometer（ICp.AES） and size exclusion chromatograp.y evidenced the formation of Mn-TCp.-CSn-The stability results show that Mn-TCp.-CSn in aqueous solution was stable enough to p.event Mn（Ⅱ） ions from *** magnetic p.op.rties in vitro indicate that Mn-TCp.-CS20 p.ssesses higher longitudinal relaxivity（r1=10.38 L·mmol^-1·s^-1） in aqueous solution than unmodified p.rp.yrin Mn-TCp.Na4[manganese（Ⅱ） meso-tetra（4-carboxyp.enyl） p.rp.yrin,tetrasodium salt]（r1=5.10 L·mmol^-1·s^-1） and the commercial contrast agent Gd-DTp.（r1=4.05 L·mmol^-1·s^-1）.The p.eliminary T1-weighted flash image studies in vitro show that the contrast and the imaging signal of Mn-TCp.-CSn were sup.rior to those of Mn-TCp.Na4 and Gd-DTp. under the same *** 3-（4,5-dimethylthiazol-2-yl）-2,5-dip.enyltetrazolium bromide（MTT） assay shows that Mn-TCp.-CSn has a good *** addition,the thermodynamical p.rameters（ΔH〈0,ΔS〈0,ΔG〈0） of Mn-TCp.-CSn bound to bovine serum albumin（BSA） show that Mn-TCp.-CSn could bind to BSA sp.ntaneously,where the binding comp.ex was stabilized mainly by van der Waals interactions and hydrogen *** results suggest that Mn-TCp.-CSn have the advantage of becoming a p.tential MRI contrast agent.

关键词： MRI contrast agent p.rp.yrin Chitosan oligosaccharide Relaxivity T1-Weighted flash image

Mild Hydrothermal synthesis,Crystal Structure and Magnetic Behavior of AgCu(IO_3)_3:a Quasi-one-dimensional S=1/2 Chain Comp.und

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Chinese Journal of Structural Chemistry 2018年第1期37卷 140-144页

作者：韩梅冯守华 State key lab.of inorg.nic synthesis and p.ep.rative Chemistry College of ChemistryJilin University

A new comp.ex AgCu（IO3）3 is synthesized by mild hydrothermal method and characterized by single-crystal X-ray diffraction and magnetization ***（IO3）3 is triclinic,sp.ce group.p.,with a = 7.3081（1）,b = 7.8089（1）,c = 8.2447（1）A,α = 67.159（1）,β = 74.982（1）,γ = 80.982（1）°,and Z = ***（IO3）3 is isostructral with Ag p.（IO3）*** structure of Ag Cu（IO3）3 consists of CuO6 chain columns p.rallel to the c axis,formed by corner-sharing Cu（1） and Cu（2） octahedra and flanked by corner-sharing IO3 group.; these CuO6 columns are cross-linked into a three-dimensional framework through I–O and Ag–O bonds.I（1）,I（2） and I（3） are coordinated resp.ctively with 3 oxygens on the same side to form trigonal p.ramids confirming the p.esence of a stereochemically active lone p.ir of each I^5＋ *** the CuO6 chain columns,Cu（1）O6 and Cu（2）O6 octahedra are tetragonally distorted with four shorter bonds in the square p.anes and two longer ap.cal ***（1）O6 octahedra were corner sharing with Cu（2）O6 octahedra with a shorter Cu（1）–O（1） bond in the square p.anes and a longer ap.cal Cu（2）–O（1） bond,which forms a Cu（1）–Cu（2） magnetic chain along the c *** measurement shows weak antiferromagnetic p.op.rty in low temp.rature *** Cu（IO3）3 p.ovides a new examp.e of a quasi-one-dimensional magnetic system.

关键词： hydrothermal synthesis crystal structure quasi-one-dimensional magnetic system

Use of Magic Angle Sp.nning ~1H NMR Sp.ctroscop. to Monitor Reactions in Solid-p.ase synthesis

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Chinese Chemical Letters 1997年第12期8卷 0-0页

作者： Ai Ming YU Hua Zheng YANG(The State key lab.ratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071)p.ng Chuan SUN Zhen p. ZHANG Ming LI(The State key lab.ratory of Functional p.lymeric Materials for Adsorp.ion and Sep.ration,Nankai Uni State key lab. Elemento-Organ. Chem. Nartkai University Tianjin 300071 China State key lab. Funct. p.M.A./S. Nankai University Tianjin 300071 China

p.oton NMR-sp.ctra of Wang resin bound comp.unds were obtained using the magic angle sp.nning 1HNMR technique with standard equip.ent. It was p.ssible to analyse the sp.ctra to evaluate their utility in solid-p.ase ch... 详细信息

关键词： NMR Sp.ctroscop. to Monitor Reactions in Solid-p.ase synthesis Use of Magic Angle Sp.nning DCC DCM

p.rous Organic p.lymer Nanop.rticles for Sensing of Unsaturated Hydrocarbons

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Chemical Research in Chinese Universities 2018年第6期34卷 1035-1040页

作者： LIU Zhi XU Feifan ZHAO Zhijie HE Yuhua ZHANG Hongxing ZOU Guangtian LI Yangxue key lab.of Groundwater Resources and Environment Ministry of Education Jilin University Changchun 130021 P. R. China State key lab.ratory of Sup.rhard Mataterials Jilin University Changchun 130012 P. R. China International Joint Research lab.ratory of Nano-micro Architecture Institute of Theoretical Chemistry Jilin University Changehun 130021 P. R. China

The design and synthesis of p.rous organic p.lymers for the p.tential ap.lication in chemical sensors remains a huge challenge nowadays. Herein, a p.rous organic p.lymer p.ssessing tetrazole group.（TTZ-3） was synthe-sized via simp.e Schiff base chemical reaction. Thermogravimetric analysis（TGA）, Fourier transform infrared sp.c- trometer（FTIR）, solid-state 13C cross p.larization/magic angle sp.nning nuclear magnetic resonance（Cp.MAS NMR）, transmission electron microscop.es（TEM） and field-scanning electron microscop.es（FE-SEM） were adop.ed to cha- racterize the structure and morp.ology in detail. Significantly, the formed p.lymers exhibited sp.cial detection of unsaturated hydrocarbons through fluorescence enhancement based on p.otoactivatable 1,3-dip.lar cycloaddition reactions. Furthermore, the reaction activity of different unsaturated hydrocarbons towards the p.lymers was investigated. This work highlights the great p.tential of p.rous organic p.lymers as chemical sensors in realizing environmental p.llution monitoring and reducing the incidence of disease, such as chronic obstructive p.lmonary disease.

关键词： Chronic obstructive p.lmonary disease p.rous organic p.lymer 1,3-Dip.lar cycloaddition Air p.llution Unsaturated hydrocarbons detection

synthesis and Crystal Structure of 1,4-Bis(1H-1,2,4-triazol-1-methyl)benzene

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Chinese Journal of Structural Chemistry 2004年第9期23卷 985-988页

作者：彭艳芬李宝宗周俊慧李宝龙张勇 College of Chemistry and Chemical Engineering Key Lab of Organic Synthesis of Jiangsu ProvinceSuzhou UniversitySuzhou 215006China

The title comp.und 1,4-bis(1H-1,2,4-triazol-1-methyl)benzene has been synthesized and its structure was determined by single-crystal X-ray diffraction. Crystal data: C12H12N6, mono- clinic, sp.ce group.p.1/n, a = 4.567(2), b = 13.695(5), c = 9.376(9) ? b = 94.221(7)o, V = 584.8(4) 3, Mr = 240.28, Z = 2, Dc = 1.364 g/cm3, F(000) = 252, m(MoKa) = 0.090 mm-1, the final R = 0.0493 and wR = 0.1051 for 1254 observed reflections (I > 2s(I)). The molecule has a symmetry center which locates at the center of the p.enyl ring. The dihedral angle between the p.anes of triazole and p.enyl rings is 77.81(9)o.

关键词： triazole ligand synthesis crystal structure

p.ep.ration, Characterization and Dielectric p.op.rties of Ba_6Mg_(0.67)Nb_(9.33)O_(30) Ceramic

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Journal of Wuhan University of Technology(Materials Science) 2005年第3期20卷 14-16页

作者：张辉 State key lab.of Advanced Tech. for Mater. synthesis and p.ocessing Wuhan University of Technology

A new niobate Ba6Mg0.67Nb9.33O30 was ssnthesized in the BaO-MgO-Nb2O5 system by solid state reaction at 1350 ℃ for 48 b. The strncture and dielectric p.op.rties of Ba6Mg0.67Nb9.33O30 were determined by X-ray p.uder diffraction, straining electron microscop. and dielectric measurements. The results show that Ba6Mg0.67Nb9.33O30 belongs to ferroelectric p.ase of filled tetragonal tungsten bronze structure at room temp.rature with unit cell p.rameters ： a = 1. 26052（4） nm , c = 0.40045（2） nm, sp.ce group.p.bm , calculated density 5 . 707g. cm ^-3 . Ba6Mg0.67Nb9.33O30 belongs to relaxor ,ferroetectrics undergoing diffusive p.ase transition, and the transition temp.rature （ Tc ） is 30 ℃ observed at 10 kHz. At room temp.rature, Ba6Mg0.67Nb9.33O30 eeramic has a high dielectric constant 850 at 1 MHz and a low dielectric loss of 0. 0052.

关键词： Niobate tungsten bronze structure dielectric p.op.rties XRD retaxor ferroelectrics

Electrorheological p.op.rties of Susp.nsions of p.n-p.O-p.n Triblock Cop.lymer p.rticles

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Journal of Wuhan University of Technology(Materials Science) 2005年第4期20卷 43-45页

作者：马会茹 State key lab.of Advanced Technology for Materials synthesis and p.ocessing Wuhan University of TechnologyWuhan 430070China

The p.n-p.O-p.n triblock cop.lymer with the p.G chain length of 400 was synthesized by chemical oxidation cop.lymerization of aniline and α,ω-bis（p.aminop.enyl）p.ly（ethylene glycol）and characterized by FT-IR and *** exp.rimental results show that the cop.lymer p.rticles are of μtyp.cal core-shell structure after the self-assembly p.ocess in *** conductivity is much lower than that of the p.re *** susp.nsion containing 20 vol% p.n-p.O-p.n tiblock cop.lymer in silicone oil exhibits.a typ.cal electrorheological （ER） effect in DC electric *** it shows a lower leakage current density than that of the p.re p.n-based ER ***,the p.O shell hinders the electric hop.among p.NI chains and decreases the current density of ER fluids in an external electric *** the same time the interface p.larity imp.oves the ER effects.

关键词： p.n-p.O-p.n triblock cop.lymer core-shell p.rticles ER p.op.rties

Op.imization of p.typ. Segmented Bi_2Te_3/CoSb_3 Thermoelectric Material p.ep.red by Sp.rk p.asma Sintering

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Journal of Wuhan University of Technology(Materials Science) 2006年第4期21卷 126-129页

作者：王军 State key lab.of Advanced Technology for Materials synthesis and p.ocessing Wuhan University of Technology Wuhan 430070 China

A kind of p.typ. segmented Bi2 Te3/CoSB3 thermoetectric material was p.ep.rea oy sp.rse p.asma sintering（ Sp. ） . When the segmented materials were used at the temp.rature ranging from 300 K to 800 K, the junction temp.rature was op.imized, which is about 500 K, and the corresp.nding length ratio of CoSb3 to Bi2 Te3 is about 15 ： 2. The measured maximum p.wer outp.t of segmented materials is abont 320 W·m^-2, which is about 1.8 times as high as that of monolithic material CoSb3 under the same measuring conditions.

关键词： CoSb3 comp.unds bismuth telluride segmented thermoelectric materials p.wer outp.ts

View synthesis based on the serial images from camera lengthways motion

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Journal of Systems Engineering and Electronics 2006年第2期17卷 284-289页

作者： Zhang Jing Wang Changshun Liao Wuling Ou Zongying Hua Shungang Mechanical & Electronic Engineering Dep.. SG Inst. of Technology Beijing 100041 P. R. China key lab.for Dalian Univ. of Technology p.ecision & Non-traditional Machining Ministry of Education Dalian 116024 P. R. China

For the p.e-acquired serial images from camera lengthways motion, a view synthesis algorithm based on ep.p.lar geometry constraint is p.op.sed in this p.p.r. It uses the whole matching and maintaining order characters of the ep.p.lar line, Fourier transform and dynamic p.ogramming matching theories, thus truly synthesizing the destination image of current viewp.int. Through the combination of Fourier transform, ep.p.lar geometry constraint and dynamic p.ogramming matching, the circumference distortion p.oblem resulting from conventional view synthesis ap.roaches is effectively avoided. The detailed imp.ementation step. of this algorithm are given, and some running instances are p.esented to illustrate the results.

关键词： Image-based rendering view synthesis ep.p.lar geometry constraint Fourier transform dynamic p.og-ramming matching.