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Kumada chain-growth polycondensation as a universal method for synthesis of well-defined conjugated polymers

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Science china chemistry 2010年第8期53卷 1620-1633页

作者： GENG YanHou1,huang Li1,2,WU ShuPeng1,2 & WANG FoSong1 1State Key Laboratory of Polymer Physics and chemistry changchun institute of applied chemistry,chinese academy of sciences,changchun 130022,china 2Graduate University of chinese academy of sciences,Beijing 100049,china State Key Laboratory of Polymer Physics and chemistry changchun institute of applied chemistry Chinese Academy of Sciences Changchun China Graduate University of chinese academy of sciences Beijing China

Kumada chain-growth polycondensation (KCGP) is a novel method for the synthesis of well-defined conjugated *** the Ni-catalyst can transfer in an intramolecular process to the propagating chain end,the polymerization follows chain-growth *** this newly developed method,various conjugated polymers,such as polythiophenes,poly(p-phenylene) (PPP),polypyrrole (PPy),and polyfluorene with controlled molecular weights and relatively narrow polydispersities (PDIs),have been ***,the polymerizations for poly(3-alkylthiophene)s (P3ATs),PPP,and PPy exhibited quasi-living characteristics,which allows preparing polymer brushes,fully-conjugated block copolymers,and macroinitiators and macro-reactants for the synthesis of rod-coil block *** the current review,the progress in this new area is summarized.

关键词： chain growth polycondensation conjugated polymers Kumada reaction block copolymers polymer brush

Electrochemical synthesis and characterization of polydiphenylamine

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chinese Journal of chemistry 1992年第1期10卷 10-16页

作者： DONG,Shao-Jun SONG,Fa-Yi LI,Zhuang Laboratory of Electroanalytical chemistry,changchun institute of applied chemistry,The chinese academy of sciences,changchun,Jilin 130022 Laboratory of Electroanalytical chemistry Changchun Institute of Applied Chemistry The Chinese Academy of Sciences Changchun Jilin 130022

Electrochemical oxidation of diphenylamine(DPA)in acetonitrile solution produced an adhesive conducting polydiphenylamine(PDPA)film on the electrode,which exhibited multiple colour variation in a wide range of *** polymer was characterized by cyclic voltam- merry,FTIR and *** results indicate that the electropolymerization of diphenylamine per- forms via the 4,4＇C—C phenyl-phenyl coupling ***,ESR and conductivity mea- surements for the different states of PDPA show that polydiphenylamine can be reversibly doped and dedoped either chemically or *** is evidenced also that there are paramagnetic species—polarons in PDPA supposed to be the current carrier.

关键词： Electrochemical synthesis and characterization of polydiphenylamine PDPA

Synthesis of Novel Cyclic Aryl Ether Thioether Ketone (Sulfone) Oligomers

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chinese Chemical Letters 1998年第7期9卷 615-617页

作者： Ying Hua QI Tian Lu CHEN Hong Yan JIANG Hai Bo LI Ji Ping XU (changchun institute of applied chemistry, chinese academy of sciences, changchun 130022) changchun Inst. of applied chemistry Chinese Academy of Sciences Changchun 130022 China

Two kinds of macrocyclic oligomers containing aromatic sulfide linkages have been synthesized by the solution polycondensation in high yield. The cyclic compounds were characterized by H-1 and C-13 NMR, by and MALDI -... 详细信息

关键词： cyclic aryl ether thioether ketone (sulfone) oligomers free radical ROP MALDI

High-Yield Synthesis and Extraction of Endohedral Metallofullerenes Dy@C_(2n)

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chinese Chemical Letters 1997年第1期8卷 31-34页

作者： Da Yong SUN Zi Yang LIU Xing Hua GUO Wen Guo XU Shu Ying LIU(changchun institute of applied chemistry chinese academy of sciences, changchun 130022) changchun Inst. of applied chemistry Chinese Academy of Sciences Changchun 130022 China

The successful encapsulation of dysprosium(Dy) into fullerene cages by activating the Dy2O3, containing graphite rods in situ 'back-burning' carbonarc evaporation with a high-yield of pyridine extraction technique is ... 详细信息

关键词： Dy Nature High-Yield Synthesis and Extraction of Endohedral Metallofullerenes Dy@C high

Four-Level Decay Model of^6P_(7/2) Excited State of Eu^(2+) Ion in KMgF_3

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chinese Chemical Letters 2001年第2期12卷 175-178页

作者： Hai Quan SU, Xian Ming ZHANG, ChunYu ZANG, Chun Shan SHI( Key Laboratory of Rare Earth chemistry and Physics, changchun institute of applied chemistry, chinese academy of sciences, changchun 130022 Key Lab. Rare Earth Chem. and Phys. Changchun Inst. of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China

A four-level decay model of ~6P_(7/2) excited state of Eu^(2+_ ion in KMgF_3: Eu^(2+) has been proposed. The decay profiles of the ~6P_(7/2) excited state of Eu^(2+) are two exponential and the physical implication of each term in the fit equation responsible for the model is interpreted. The data obtained spectroscopically are in good agreement with the fit results.

关键词： Four-level decay model divalent europium ~6P_(7/2) excited state KMgF_3.

EFFECT OF BORIC ACID ON THE EXTRACTION OF BASTNASITE LEACHING LIQUOR BY CYANEX 923

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化工学报 2000年第S1期51卷 126-129页

作者： Liao Wuping, Li Deqian (Laboratory of Rare Earth chemistry and Physics, changchun institute of applied chemistry chinese academy of sciences, changchun, 130022)

The effect of boric acid on the extraction of bastnasite leaching liquor by Cyanex 923 was studied. Boric acid wasn’t extracted alone by Cyanex 923 and didn’t influence the cerium(IV) extraction. But it can enhance ... 详细信息

关键词： boric acid bastnasite Cyanex 923

Syntheses of(C_8H_8)Ln(C_9H_7)·(THF)_2(Ln=Pr,Nd)and crystal structure of(C_8H_8)Pr(C_9H_7)·(THF)_2

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chinese Journal of chemistry 1992年第4期10卷 331-336页

作者： WEN,Ke JIN,Zhong-Sheng WEI,Ge-Cheng CHEN,Wen-Qi changchun institute of applied chemistry,chinese academy of sciences,changchun 130022 changchun institute of applied chemistry Chinese Academy of Sciences Changchun 130022

This paper reports two lanthanide complexes of formula (C_9H_7)Ln(C_8H_8)·(THF)_2 where Ln is Pr or Nd,C_9H_7 is indenyl,and C_8H_8 is cyclooctatetraene (COT).The complexes were prepared by the reaction of LnCl_3 with K(C_9H_7) and K_2(C_8H_8) in THF.(C_9H_7)Pr(C_8H_8)·(THF)_2 crystallizes in THF at - 15℃ in the monoclinic space group P2_1:with unit cell dimensions a=8.446(0),b=10.083(2), c=13.407(3),β=105.48(1)°,V=1100.43(35)~3,Dc=1.52g/cm^3 and Z=*** final R value is 0.033,R_w value is 0.030,*** (C_9H_7)Pr(C_8H_8)·(THF)_2 a five-membered ring centroid of C_9H_7,the C_8H_8 ring centroid and the two oxygen atoms from the two THF molecules form a distorted tetrahedral geometry around the metal.

关键词： Syntheses of C8H8)Pr C8H8)Ln C9H7 THF Nd

A Chemiluminescence Optical Fiber Glucose Biosensor Based on Co-immobilizing Glucose Oxidase and Horseradish Peroxidase in a Sol-gel Film

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Chemical Research in chinese Universities 2002年第1期18卷 12-15页

作者： LI Ying-xiu, ZHU Lian-de and ZHU Guo-yi State Key Lab of Electroanalytical chemistry, changchun institute of applied chemistry, chinese academy of sciences, changchun 130022, P.R. chinaZHAO Chun College of chemistry, Jilin University, changchun 130023, P changchun institute of applied chemistry Chinese Academy of Sciences State Key Lab of Electroanalytical Chemistry Changchun 130022 College of chemistry Jilin University Changchun 130023

An optical fiber bienzyme sensor based on the luminol chemiluminescent reaction was developed and demonstrated to be sensitive to glucose. Glucose oxidase(GOD) and horseradish peroxidase(HRP) were co-immobilized by microencapsulation in a sol-gel film derived from tetraethyl orthosilicate(TEOS). The calibration plots for glucose were established by the optical fiber glucose sensor fabricated by attaching the bienzyme silica gel onto the glass window of the fiber bundle. The linear range was 0 2-2 mmol/L and the detection limit was approximately 0 12 mmol/L. The relative standard deviation was 5.3% ( n =6). The proposed biosensor was applied to glucose assay in ofloxacin injection successfully.

关键词： Fiber optical biosensor Sol-gel Chemiluminescence Glucose oxidase Horseradish peroxidase Glucose assay

EXTRACTION KINETICS OF YTTRIUM WITH PURIFIED CYANEX 923 FROM NITRATE MEDIUM

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Acta Metallurgica Sinica(English Letters) 2003年第6期16卷 428-432页

作者： H. tong, Y.G. Wang, J.H. Lei, D.Q. Li, and P. TangDepartment of applied chemistry, Wuhan University of Technology, Wuhan 430070, china Key Laboratory of Rare Earth chemistry and Physics, changchun institute of applied chemistry, The chinese academy of sciences, changchun 130022, china Department of applied chemistry Wuhan University of Technology Key Laboratory of Rare Earth chemistry and Physics Changchun Institute of Applied Chemistry The Key Laboratory of Rare Chinese Academy of Sciences

Mass transfer and extraction kinetics of yttrium with the purified Cyanex 923 in n-heptane from nitrate medium have been investigated by using a constant interfacial cell with laminar flow at 298K. The interfacial adsorption properties of purified Cyanex 923-heptane-0.20mol/L (H, Na)NO3 were studied at 298K. The experimental results show that the mass transfer is controlled by diffusion and the chemical reactions are carried out in the interfacial zone. The extraction rates of yttrium were measured at different chemical compositions by varying ionic strength, pH values and the purified Cyanex 923 concentrations. The initial extraction rate equations were obtained.

关键词： yttrium Cyanex 923 extraction kinetics interfacial tension