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混合三烃基卤化锡二苯基环己基碘化锡和甲基二环己基氯化锡与巯基乙酸在有机胺存在下的反应产物及生物活性研究 总被引:1,自引:0,他引:1
在有机胺的存在下,Ph2CySnI和McCy2SnCl与HSCH2COOH反应,得到了非锡碳键断裂的五配位阴离子型有机锡化合物和锡碳键断裂的有机锡聚合物两类产物.对于有机胺作为缚酸剂,有机锡卤化物与有机酸反应机理的研究进行了深入探讨.通过IR 1H NMR,13C NMR,元素分析对反应产物进行了表征,确定了反应产物的结构.测定了反应产物体外对人类肺癌肿瘤细胞(A-549)、结肠癌肿瘤细胞(HCT-8)和肝癌肿瘤细胞(Bel-7402)的抑制活性,结果表明该类化合物具有很强的体外抗肿瘤活性. 相似文献
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共轭聚合物发光和光伏材料研究进展 总被引:5,自引:1,他引:4
聚合物光电功能材料与器件因其广阔的应用前景,1990年以年来吸引了世界各国学术界的广泛关注和兴趣.聚合物光电子器件主要包括聚合物电致发光二极管、聚合物场效应晶体管和聚合物太阳能电池等,其使用的关键材料是共轭聚合物光电子材料,包括共轭聚合物发光材料、场效应晶体管材料和光伏材料等.本文主要对共轭聚合物电致发光材料和光伏材料的研究进展进行综述,介绍了这些聚合物材料的种类、结构和性质以及在聚合物电致发光器件和聚合物太阳能电池中的应用.并讨论了当前共轭聚合物光电子材料中的关键科学问题和今后的发展方向. 相似文献
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建国50年来我国乳液聚合技术研究开发与工业生产成就及现状 总被引:5,自引:0,他引:5
综述了建国50年来我国乳液聚合合成橡胶、合成树脂及合成聚合物聚液工业从无到有,由小到大,由弱到强的发展历程,介绍了我国乳聚合新产品、新技术的开发以及乳液聚合物与聚合物乳推广应用所取得的伟大成就。 相似文献
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近几十年,二次锂电池作为重要的储能装置得到迅猛发展,而开发高性能的锂电池电极材料一直是电化学能源领域的研究热点之一。与传统无机正极材料相比,聚合物正极材料具有比容量高、柔软性好、廉价易得、环境友好、加工方便、可设计性强等诸多优点。本文综述了导电聚合物、共轭羰基聚合物以及含硫聚合物正极材料的结构特点、电极反应机理、电化学性能和近五年来的重大研究进展,总结了这三类聚合物电极材料的优缺点,并重点介绍了含硫聚合物电极材料中存在的问题及改进手段,最后提出了综合这三类聚合物优点的含硫共轭导电聚合物将会是该领域的研究方向。 相似文献
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对二十余年来聚合物支载的有机催化剂的合成、性能及其在催化反应中的应用,包括负载催化剂的回收和重复使用等进行了综述。用于支载体的聚合物包括交联聚合物、线型聚合物及树形聚合物;支载的有机催化剂包括手性及非手性催化剂两类。本文作为第二部分将介绍聚合物支载的手性有机催化剂,重点介绍近年来颇受重视的氨基酸及多肽类有机催化剂的研究及其应用进展。 相似文献
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Yangha Cho Youn Soo Sohn Moo-Jin Jun 《Journal of polymer science. Part A, Polymer chemistry》1993,31(13):3397-3403
The melt polymerization of hexachlorocyclotriphosphazene to poly(dichlorophosphazene) has been studied in the presence of organotin (IV) compounds. Unlike other typical Lewis acids, diethyltin (IV) chloride, Et2SnCl2, has shown to be an inhibitor for the thermal polymerization of the trimer, raising the activation energy to 70 kcal/mol. Diethyltin(IV) chloride remarkably delayed the rate of polymerization and efficiently inhibited the crosslinking reaction, thus leading to an improvement in the yield of the linear polymer without sacrifice to its molecular weight. © 1993 John Wiley & Sons, Inc. 相似文献
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ZHANG Zhi-bin LI Min SONG Hong FANG Yi Hua Hui CHEN Li-guo ZHOU Wei WANG Zheng-rong 《合成化学》2004,12(Z1)
Microcapsulation is a technology that enwrapped the solid or liquid or some gas matter with membrane materials to form microparticles(i.e.microcapsules). The materials of microcapsule is composed of naturnal polymers or modified naturnal polymers or synthesized polymers. The water-soluble core matter can only use oil-soluble wall materials, and vice versa.Synthesized methods of polymer microcapsulesSynthesized methods with monomers as raw materialsThis kind of methods include suspension polymerization, emulsion polymerization, dispersal polymerization, precipitation polymerization,suspension condensation polymerization, dispersal condensation polymerization, deposition condensation polymerization, interface condensation polymerization, and so on.Synthesized methods with polymers as raw materialsThese methods are suspension cross-linked polymerization, coacervation phase separation,extraction with solvent evaporation, polymer deposition, polymer chelation, polymer gel,solidification of melting polymer, tray-painted ways, fluidized bed ways, and so forth.Polymer materials to synthesize microcapsules2.1. Naturnal polymer materialsThe characteristics of this kind of materials are easy to form membrane, good stability and no toxicity. The polymer materials include lipids(liposome), amyloses, proteins, plant gels, waxes, etc.2.2. Modified polymer materialsThe characteristics of these materials are little toxicity, high viscidity(viscosity), soluble salt materials. But they cannot be used in water, acidic environment and high temperature environment for a long time. The materials include all kind of derivants of celluloses.2.3. Synthesized polymer materialsThe characteristics of the materials are easy to form membrane, good stability and adjustment of membrane properties. The synthesized polymer materials include degradable polymers(PLA, PGA,PLGA, PCL, PHB, PHV, PHA, PEG, PPG and the like) and indegradable polymers(PA, PMMA,PAM, PS, PVC, PB, PE, PU, PUA, PVA and otherwise).The applications of polymer microcapsules in cell technologyThe "artificial cell" is the biological active microcapsule used in biological and medical fields.The applications of cells (including transgenic cells, the same as artificial cells) technology include several aspects as follows:3.1. Microcapsulation of artificial red cell3.2. Microcapsule of artificial cell of biological enzyme3.3. Microcapsule of artificial cell of magnetic material3.4. Microcapsule of artificial cell of active carbon3.5. Microcapsule of active biological cell 相似文献
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用化学聚合方法合成了聚丁基噻吩导电材料,并研究了不同的聚合条件对聚合物性能的影响。聚丁基噻吩导电材料具有较好的稳定性和加工性,其掺杂态的导电率可达到10s/cm。 相似文献
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Jinbao Guo Lilong Yu Fang Liu Renwei Guo Guojing Ma Hui Cao Huai Yang 《Journal of Polymer Science.Polymer Physics》2008,46(15):1562-1570
A series of polymer stabilized cholesteric liquid crystal (PSCLC) cells were prepared by photo‐polymerization of a cholesteric liquid crystal (Ch‐LC) mixture containing a nonreactive LC, a nematic diacrylate and a novel cholesteryl monomer. The influence of the specific rotation and concentration of the chiral dopants, and the polymerization temperature on reflection properties was investigated. The results demonstrate that the reflection band was broadened after polymerization for all the systems both left‐handed S811 and right‐handed R1011 as the chiral dopant, which is speculated to be a result of an inhomogeneous consumption of the chiral monomer within the system. Additionally, the polymer temperature plays an integral role in the observed reflection spectra, and at optimum polymerization temperature the broadband reflection effect becomes much more pronounced. Scanning electron microscopy (SEM) was used to examine the role of microscopic changes of the polymer network induced by polymerization temperature. © 2008 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 46: 1562–1570, 2008 相似文献
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聚合物纳米材料研究进展——Ⅰ.纳米聚合物 总被引:7,自引:1,他引:6
聚合物纳米材料包括纳米聚合物和聚合物/无机纳米复合材料。本文综述了纳米聚合物的研究进展,重点介绍了分子自组装,微乳液聚合,模板聚合,树枝状聚合物,超支化聚合物,机械粉碎,相反转技术的研究进展。 相似文献
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《高分子科学杂志,A辑:纯化学与应用化学》2013,50(4):401-413
The polymerization of an ionic propargyl derivative, 4-dimethylamino-N-propargylpyridinium bromide (DMAPPB), was carried out by palladium, platinum, and ruthenium chlorides. The polymerization of DMAPPB by these transition metal catalysts proceeded well to give a relatively high polymer yield. The chemical structure of the resulting polymer was characterized by such instrumental methods as elemental analysis, infrared, NMR, UV–visible spectroscopies to have conjugated polymer backbone system bearing 4-dimethylamino-N-methylenepyridinium bromide. The polymer was soluble in DMF, DMSO, and formic acid, and found to be less hygroscopic than those of similar homologues having more smaller substituents. The resulting polymers were mostly black powders and showed the amorphous morphology. 相似文献
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Md. Wali Ullah Naoki Haraguchi 《Journal of polymer science. Part A, Polymer chemistry》2019,57(12):1296-1304
A variety of polymer microspheres were successfully synthesized by the surface‐initiated atom transfer radical polymerization (SI‐ATRP) of monomers by using monodisperse polymer microsphere having benzyl halide moiety as a multifunctional polymeric initiator. First, a series of monodisperse polymer microsphere having benzyl chloride with variable monomer ratio (P(St‐DVB‐VBC)) were synthesized by the precipitation polymerization of styrene (St), divinylbenzene (DVB), and 4‐vinylbenzyl chloride (VBC). Next, hairy polymer microspheres were synthesized by the surface‐initiated ATRP of various monomers with P(St‐DVB‐VBC) microsphere as a multifunctional polymeric initiator. The hair length determined by the SEC analysis of free polymer was increased with the increase of M/I. These hairy polymer microspheres were characterized by SEM, FT‐IR, and Cl content measurements. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019 © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, 1296–1304 相似文献
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一种西佛碱侧链型液晶高分子的合成及表征 总被引:2,自引:0,他引:2
一种西佛碱侧链型液晶高分子的合成及表征邹友思,林国良,姚青青,戴李宗,潘容华(厦门大学化学系厦门361005)关键词联苯,西佛碱,侧链型,液晶高分子,基团转移聚合Finkellnann等提出的柔性基去偶合概念’]已在侧链型液晶高分子的研究中得到了证实... 相似文献
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Fu-Ming Wang Jyh-Tsung Lee Ju-Hsiang Cheng Chin-Shu Cheng Chang-Rung Yang 《Journal of Solid State Electrochemistry》2009,13(9):1425-1431
Poly (acrylate-co-imide)-based gel polymer electrolytes are synthesized by in situ free radical polymerization. Infrared spectroscopy confirms
the complete polymerization of gel polymer electrolytes. The ionic conductivity of gel polymer electrolytes are measured as
a function of different repeating EO units of polyacrylates. An optimal ionic conductivity of the poly (PEGMEMA1100-BMI) gel polymer electrolyte is determined to be 4.8 × 10–3 S/cm at 25 °C. The lithium transference number is found to be 0.29. The cyclic voltammogram shows that the wide electrochemical
stability window of the gel polymer electrolyte varies from −0.5 to 4.20 V (vs. Li/Li+). Furthermore, we found the transport properties of novel gel polymer electrolytes are dependent on the EO design and are
also related to the rate capability and the cycling ability of lithium polymer batteries. The relationship between polymer
electrolyte design, lithium transport properties and battery performance are investigated in this research. 相似文献
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Christine Schütz Torsten Dwars Christoph Schnorpfeil Jörg Radnik Michael Menzel Udo Kragl 《Journal of polymer science. Part A, Polymer chemistry》2007,45(14):3032-3041
Oligomeric and polymeric polyether polyols, especially poly(propylene oxide), are used for the production of detergents, nonionic surfactants, washing agents, and cleaners, but they are predominantly used in polyurethane production processes. Tin phosphate coordination polymers show good activity in the selective polymerization of epoxides. The catalyst can be easily synthesized by the condensation of tributyl phosphate and butyl tin trichloride. Investigations of this achiral organotin phosphate condensate in the stereoregular polymerization of propylene oxide, including the properties controlling the molecular weight of the resulting poly(propylene oxide) and structural and mechanistic studies, are presented. Additionally, the polymerization of propylene oxide occurs with high activity, no allyl end groups, just a small number of irregularities, and a high percentage of isotacticity (88%) in the polymer. © 2007 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45: 3032–3041, 2007 相似文献