共查询到19条相似文献,搜索用时 140 毫秒
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超分子聚合物是超分子化学与高分子化学交叉的前沿研究领域,近年来受到了国内外研究学者的广泛关注.可控制备超分子聚合物对于研究超分子聚合物的结构与性能关系、设计合成特定功能的超分子聚合物具有重要的意义.本文将总结通过超分子单体的共价聚合反应以制备超分子聚合物的方法.不同于传统的制备超分子聚合物的方法,超分子单体的共价聚合方法将不易调控的非共价聚合转化为可控的共价聚合,为实现超分子聚合物的可控制备提供了新思路. 相似文献
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环状聚合物具有不同于线性高分子的独特性质,是一类具有应用前景的新型聚合物材料,但复杂的结构导致其合成过程复杂繁琐."点击"化学由于其高效、可靠、高选择性的特点已成为拓扑高分子合成的新方法,活性自由基聚合(ATRP、RAFT和NMP)具有聚合物结构可控等特点,二者联用为环状聚合物的合成拓宽了思路.本文就近几年"点击"反应、"点击"反应与活性自由基聚合联用以及其他方法联用在环状聚合物中的应用进行综述."点击"反应与这些方法的结合将在功能性环状聚合物的设计与合成中发挥积极的作用. 相似文献
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高分子合成化学是高分子科学的基础,高效的聚合反应是合成高分子材料的关键.Bergman环化反应是一种可以形成芳香双自由基活性物质的化学过程.芳基双自由基可以快速偶联形成聚芳烃,为此类聚合物的合成提供简洁的方法.本文系统地介绍了Bergman环化反应进入高分子科学后的发展轨迹,阐述了我们研究组利用该反应的原位聚合机制以及不需要催化剂不产生副产物的特点,在明确该反应的聚合反应机理的基础上,建立了线形聚合物、聚合物粒子、面形聚合物等具有多种特殊拓扑结构形貌以及功能的聚合物纳米材料的工作.最后,对Bergman环化反应中尚存在的问题进行总结并对其未来在高分子科学中的发展予以展望. 相似文献
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开环易位聚合(ROMP)是一种单环或多环烯烃进行开环聚合反应形成功能化聚合物的方法, 已经发展成为一种合成先进聚合物材料的高效方法之一. 而星型聚合物由于特殊的结构和性能将在学术和工业的材料科学和纳米技术领域中发挥越来越重要的作用. 本综述从聚合方法、聚合单体、引发剂、交联剂等方面讨论了ROMP在星型聚合物合成中的应用, 并介绍了ROMP合成的星型聚合物的应用领域和前景, 客观地评价了各种ROMP方法的优势和局限性. 这项工作旨在促进ROMP在合成星型聚合物的研究, 为合成功能性复杂星型聚合物提供新的科学研究途径, 为加快星型聚合物材料商业化的脚步添砖加瓦. 相似文献
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Young A. Chang Robert M. Waymouth 《Journal of polymer science. Part A, Polymer chemistry》2017,55(18):2892-2902
Cyclic polymers are the simplest topological isomers of linear macromolecules, but exhibit properties that differ from linear chains in ways that remain imperfectly understood. The difficulty of synthesizing appropriately pure and high molecular weight cyclic samples has hindered experimental studies. Ring-closure methods, while versatile, are inherently limited in the range of molecular weights that can be achieved. Ring-expansion methods are a much more promising strategy toward obtaining high molecular weight cyclic polymers. The current review focuses on recent developments in ring-expansion polymerization strategies toward the synthesis of high molecular weight cyclic polymers. Significant progress in the last decade has made the synthesis of cyclic polymers possible by a variety of methods, such as ruthenium- and tungsten-catalyzed ring-expansion metathesis polymerization, organocatalytic and Lewis acid-catalyzed zwitterionic polymerization, RAFT and nitroxide-mediated radical polymerization, among many others. While the study of cyclic polymers has long been hampered by synthetic challenges, the recent resurgence of interest in this field presents an exciting opportunity for chemists. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017 , 55, 2892–2902 相似文献
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《中国化学快报》2019,30(12):1996-2002
This short review is dedicated to celebrate Prof.Shoukuan Fu's 80 th birthday by discussing several of my accomplished projects over the past twenty years,which all applied radical polymerization in aqueous dispersed media for producing polymers with branched structures.These projects include the use of microemulsion polymerization for syntheses of fluorescent nanoparticles,hairy nanoparticles and hyperbranched polymers;the use of miniemulsion polymerization for synthesis of star polymers and light-emitting nanoparticles;the use of seeded emulsion polymerization for synthesis of hairy nanoparticles and hyperstar polymers;and the use of precipitation polymerization for synthesis of hollow polymer nanocapsules.Discussion of these projects demonstrates intriguing features of polymerization in biphasic dispersed media via either conventional radical polymerization or controlled radical polymerization to effectively regulate the branched structure of functional polymers. 相似文献
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简要叙述我国近20年来在高分子化学研究领域中的自由基聚合、光诱导聚合、Ziegler Natta聚合和茂金属聚烯烃、环醚、枘酯等开环聚合、缩聚反应合成PEEK和耐热性杂环高分子含氟高分子、生物医学高分子、导电高分子、液晶高分子方面的进展。 相似文献
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Haifeng Gao 《中国化学快报》1990,30(12):1996-2002
Several projects were discussed to demonstrate the intriguing power of radical polymerization in aqueous dispersed media to regulate the branched structures in functional polymeric nanomaterials. 相似文献
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活性阳离子聚合法合成嵌段共聚物的研究进展 总被引:2,自引:0,他引:2
在80年代,阳离子聚合研究的一个最重要突破可能就是活性阳离子聚合。目前为止,有关活性阳离子聚合的新引发体系,新单体及合成应用等方面已取得巨大进展,本综述主要介绍利用活性阳离子聚合合成二、三元嵌段和多元嵌段共聚物的研究成果。 相似文献
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Dr. Jeffrey C. Foster Spyridon Varlas Dr. Lewis D. Blackman Lucy A. Arkinstall Prof. Rachel K. O'Reilly 《Angewandte Chemie (International ed. in English)》2018,57(33):10672-10676
Water‐soluble and amphiphilic polymers are of great interest to industry and academia, as they can be used in applications such as biomaterials and drug delivery. Whilst ring‐opening metathesis polymerization (ROMP) is a fast and functional group tolerant methodology for the synthesis of a wide range of polymers, its full potential for the synthesis of water‐soluble polymers has yet to be realized. To address this, we report a general strategy for the synthesis of block copolymers in aqueous milieu using a commercially available ROMP catalyst and a macroinitiator approach. This allows for excellent control in the preparation of block copolymers in water. If the second monomer is chosen such that it forms a water‐insoluble polymer, polymerization‐induced self‐assembly (PISA) occurs and a variety of self‐assembled nano‐object morphologies can be accessed. 相似文献
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Control of radical polymerization has been one of the most challenging frontiers in polymerization chemistry. This review presents the discovery of metal-catalyzed living radical polymerization and recent developments in the evolution of catalysts in terms of versatility and activity, scope of monomers, controlled polymerization in water, catalyst removal, and precision synthesis of well-controlled polymers such as random, block, end-functionalized, and star polymers. 相似文献