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Book Metathesis Polymerization of Olefins and Polymerization of Alkynes

Download or read book Metathesis Polymerization of Olefins and Polymerization of Alkynes written by Yavuz İmamoğlu and published by Springer Science & Business Media. This book was released on 1998 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains contributions from inorganic, organic and polymer chemists, who join forces to report on the state of the art in ring opening metathesis polymerization, acyclic diene metathesis and alkyne polymerization. Topics covered are: mechanism of ROMP reactions, new catalysts for ROMP, new products by ROMP, new catalysts for ADMET, new products by ADMET, degradation of polymers by metathesis reactions, alkyne polymerization and metathesis, and industrial applications of metathesis reactions.

Book Ring Opening Metathesis Polymerisation and Related Chemistry

Download or read book Ring Opening Metathesis Polymerisation and Related Chemistry written by Ezat Khosravi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the last ASI in Turkey in Sept. 1995, the olefin metathesis has made remarkable strong developments with an incredible speed in various directions. New catalyst systems have been developed which have resulted in the synthesis of novel materials. Other fascinating developments have been the new catalysts for stereoselective metathesis and catalysts with considerable functional group tolerance. These new catalysts in addition to Ring Opening Metathesis Polymerisation (ROMP) and Acyclic Diene Metathesis (ADMET) are now powerful tools for Ring Closing Metathesis (RCM) and have found many applications in the synthesis of natural products. A lot of information has been established about all aspects of the olefin metathesis and there is a vast literature concerning the process, covering the initiators, mechanistic features and applications of this reaction in organic and polymer synthesis. The NATO ASI on rd th ROMP and Related Chemistry took place in Polanica-Zdroj, Poland during 3 to 15 Sept. 2000, to highlight the developments in this area and to discuss the prospects and visions for the year 2000 and beyond. The aims of the ASI were: to provide a platform for dissemination of knowledge; to promote communication between people who have a serious interest in this field of chemistry; to help establishing international scientific contacts and to provide an opportunity for the scientists with an appropriate scientific background to learn of recent developments in this field of science. There were 15 lecturers and 67 participants in this NATO ASI.

Book Olefin Metathesis and Metathesis Polymerization

Download or read book Olefin Metathesis and Metathesis Polymerization written by Kenneth John Ivin and published by . This book was released on 1997-01 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Olefin Metathesis by K. J. Ivin was published in 1983. Olefin Metathesis and Metathesis Polymerization provides a broad, up-to-date account of the subject from its beginnings around 1960 to the latest applications in organic synthesis. It is assembled along the same lines as the earlier book so as to be useful to both teachers and researchers and will be of particular interest to those working in the fields of organic chemistry, polymer chemistry, organometallic chemistry, catalysis, materials science and chemical engineering.

Book Ring Opening Metathesis Polymerization

Download or read book Ring Opening Metathesis Polymerization written by Alexey Lyapkov and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, the olefins metathesis has established itself as a powerful tool for carbon-carbon bonds forming and has found numerous applications in polymer chemistry. One of the important directions of metathesis is the polymerization with cycle opening. A study of new ruthenium catalysts, resistant to the many functional groups effects, has showed the possibility of synthesizing functionalized polymers with unique properties. In this chapter, reactivity and activation parameters of eight different norbornene dicarboxylic acid alkyl esters in the presence of a Hoveyda-Grubbs II catalyst for the ring opening metathesis polymerization were determined by 1H NMR analysis in-situ. The molecules of esters differ in the aliphatic radical structure and the location of the substituent groups. Kinetic studies have shown that effective polymerization constants and activation parameters strongly depend on the monomer structure. It is shown that the elongation of the aliphatic radical does not significantly affect the reactivity, but significantly changes the activation parameters. The branching of the aliphatic radical significantly affects both the reactivity of the corresponding ester and the activation parameters of the polymerization. The position of the substituents in the norbornene ring of the ester also has a significant effect on the activation parameters of metathesis polymerization.

Book Ring opening Polymerisation

Download or read book Ring opening Polymerisation written by N. Spassky and published by iSmithers Rapra Publishing. This book was released on 1995 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general features of ring-opening polymerisation, for example the dependence of polymerisability upon ring-strain, the significance of ring-chain equilibria, and the potential for formation of cyclic oligomers are outlined. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database provides useful references for further reading.

Book Metal free Photoredox mediated Ring Opening Metathesis Polymerization

Download or read book Metal free Photoredox mediated Ring Opening Metathesis Polymerization written by Laura M. M. Pascual and published by . This book was released on 2018 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Study of Ring opening Metathesis Polymerisations of Strained Bicyclic Monomers Mediated by Well defined Ruthenium Complexes

Download or read book The Study of Ring opening Metathesis Polymerisations of Strained Bicyclic Monomers Mediated by Well defined Ruthenium Complexes written by David Mitchell Haigh and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Development of Organic Photoredox mediated Ring opening Metathesis Polymerization Through Expanded Functionalities of Initiators and Monomers

Download or read book Development of Organic Photoredox mediated Ring opening Metathesis Polymerization Through Expanded Functionalities of Initiators and Monomers written by Pengtao Lu and published by . This book was released on 2019 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ring-opening metathesis polymerization (ROMP), which is derived from transition-metal-based olefin metathesis, has evolved into one of the most prevalent technologies for making functional polymeric materials. Due to the nature of this polymerization method, the metal alkylidene remains covalently bound to the polymer chain end until the introduction of various quenchers to terminate the polymerization. However, the removal of resultant metal by-products requires multiple purification steps. Recently, our group pioneered establishment of organic photoredox-mediated ROMP (o-ROMP), which is driven by the motivation of developing a metal-free alternative to traditional ROMP. This thesis aims to contribute to the study of o-ROMP by describing our investigations in the field, with a particular emphasis on expanding scopes of functional initiators and monomers. Chapter 1 is an introduction to o-ROMP, which start with explanation of community interests on developing organic photoredox-mediated controlled polymerization (OPCP). The general mechanisms of these novel polymerizations, including the properties of various organic photoredox catalysts, will be reviewed first. The flowing discussion will focus on different kinds of established OPCPs, which emphasizes on unique scopes for each specific methods. We will end up the introduction part with our previous efforts on developing o-ROMP. Chapter 2 begins with our initial attempts on testing the feasibility of grafting o-ROMP from small-molecular multitopic initiators. The successful combination of this multidirectional growth mode with the design of macroinitiators facilitate preparation of polyether-based triblock copolymer and polystyrene-based graft copolymer, which are both acid cleavable. Chapter 3 describes our recent efforts on expanding the scope of macroinitiator towards polyesters and polycarbonates, which are derived from organocatalyzed ring-opening polymerization (o-ROP). Grafting from bifunctional initiators in one pot, stepwise o-ROP and o-ROMP succeed in making biocompatible block copolymers via a completely metal-free pathway. Finally, Chapter 4 discusses our ongoing efforts in the expansion of monomer scopes, aiming to make functional polymers solely through o-ROMP strategy. The successful adoption of those deprotection-free functional monomers not only make it possible to enable post-polymerization modification, but also provide opportunity to control chain architectures of resulted polymer.