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Author : Einat Elmalem
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (89 download)
Download or read book Synthesis of Π-conjugated Polymers Via Suzuki Cross-coupling Polymerization written by Einat Elmalem and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (958 download)
Download or read book Accessing Conjugated Polymers with Precisely Controlled Heterobisfunctional Chain Ends Via Post-polymerization Modification of the OTf Group and Controlled Pd(0)/t-Bu3P-catalyzed Suzuki Cross-coupling Polymerization written by and published by . This book was released on 2015 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, a general strategy toward the synthesis of well-defined conjugated polymers with controlled heterobisfunctional chain ends via combination of controlled Pd(0)/t-Bu3P Suzuki cross-coupling polymerization with the post-polymerization modification of the triflate (OTf) group was disclosed.
Author : Yoshiki Chujo
Publisher : John Wiley & Sons
ISBN 13 : 3527632689
Total Pages : 333 pages
Book Rating : 4.5/5 (276 download)
Download or read book Conjugated Polymer Synthesis written by Yoshiki Chujo and published by John Wiley & Sons. This book was released on 2011-08-02 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: Edited and authored by top international experts, this first book on conjugated polymers with a focus on synthesis provides a detailed overview of all modern synthetic methods for these highly interesting compounds. As such, it describes every important compound class, including polysilanes, organoboron compounds, and ferrocene-containing conjugated polymers. An indispensable source for every synthetic polymer chemist.
Author : Mario Leclerc
Publisher : John Wiley & Sons
ISBN 13 : 3527339981
Total Pages : 312 pages
Book Rating : 4.5/5 (273 download)
Download or read book Synthetic Methods for Conjugated Polymer and Carbon Materials written by Mario Leclerc and published by John Wiley & Sons. This book was released on 2017-04-10 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: A concise and practical overview of the most important modern synthetic aspects of conjugated polymers and carbon materials, including their properties and applications. Well structured, this book summarizes recent achievements, outlines the current state and reviews research trends. As such, a wide variety of polymerization techniques are included on both a strategic as well as a practical level, including Stille, Suzuki , and direct (hetero)arylation polymerizations. Furthermore, it covers various carbon-rich materials, such as graphene and carbon nanotubes, followed by a look at how the different synthetic pathways and strategies influence their final properties, for example, for use in organic electronic devices. The whole is rounded off with a discussion of future technology advances. An essential reference for newcomers as well as experienced researchers in the field.
Author : Kai Zhang
Publisher : disserta Verlag
ISBN 13 : 3954250128
Total Pages : 233 pages
Book Rating : 4.9/5 (542 download)
Download or read book New Conjugated Polymers Based on Benzodifuranone and Diketopyrrolopyrrole written by Kai Zhang and published by disserta Verlag. This book was released on 2012 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work synthesis and properties of novel Pi-conjugated polymers containing diketopyrrolopyrrole (DPP) and benzodifuranone (BZDF) chromophores in the main chain, which are suitable as active materials in optoelectronic applications, are developed and investigated. The polymers were synthesized via metal-mediated or -catalyzed Suzuki, Stille, Sonogashira and Yamamoto cross-coupling polycondensation reactions or by using oxidative and anodic electropolymerization. The resulting polymers were characterized using gel permeation chromatography, NMR-, UV/vis-, and fluorescence spectroscopy, mass spectroscopy, and cyclic voltrammetry. The polymers exhibit low HOMO-LUMO band gaps and reversible oxidation and reduction processes, which suggests a strong donor-acceptor character. Electrochromic properties were found upon oxidation and reduction. Additionally, a series of cross-linked conjugated microporous polymers was synthesized. They exhibit high surface area and micropores in nanometer range. Furthermore, the influence via variation of electron donor and acceptor on the HOMO-LUMO band gaps of the conjugated polymers was studied.
Download or read book Controlled Pd(0)/t Bu3P Catalyzed Suzuki Cross-Coupling Polymerization of AB-Type Monomers with ArPd(t Bu3P)X Or Pd2(dba)3/t Bu3P/ArX as the Initiator written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The synthesis of well-defined and functionalized conjugated polymers, which are essential in the development of efficient organic electronics, through Suzuki cross-coupling polymerizations has been a challenging task. We developed controlled Pd(0)/t-Bu3P-catalyzed Suzuki cross-coupling polymerizations of AB-type monomers via the chain-growth mechanism with a series of in situ generated ArPd(t-Bu3P)X (X = I, Br, Cl) complexes as initiators. Among them, the combinations of Pd2(dba)3/t-Bu3P/p-BrC6H4I, Pd2(dba)3/t-Bu3P/p-BrC6H4CH2OH and Pd2(dba)3/t-Bu3P/p-PhCOC6H4Br were identified as highly robust initiator systems, resulting in polymers with predictable molecular weight and narrow polydispersity (PDI~1.13-1.20). In addition, Pd2(dba)3/t-Bu3P/p-BrC6H4CH2OH and Pd2(dba)3/t-Bu3P/p-PhCOC6H4Br initiator systems afforded functional polymers with>95% fidelity. Our results paved the road to access well-defined conjugated polymers, including conjugated polymers with complex polymer architectures such as block copolymers and branch copolymers.
Author : Seth C. Rasmussen
Publisher : American Chemical Society
ISBN 13 : 0841299609
Total Pages : 198 pages
Book Rating : 4.8/5 (412 download)
Download or read book Conjugated Polymers: Synthesis & Design written by Seth C. Rasmussen and published by American Chemical Society. This book was released on 2023-12-01 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: This digital primer serves as an excellent introduction to conjugated polymers, particularly in terms of their synthesis and design. Chapters one and two introduce common terminology and fundamental concepts. Chapter three covers known structure–function relationships that can be used to design conjugated polymers with the desired properties for specific applications, concluding with a discussion of the additive and sometimes conflicting aspects of these design elements. Chapters four, five, and six cover the various methods used to synthesize these materials, beginning with the oldest and most simple approaches, and increasing in synthetic complexity. Advanced undergraduates, graduate students, and faculty wishing to enter this field for the first time should find this primer beneficial. At the same time, however, we have pointed out various misconceptions still commonly found in the literature, which should be valuable to those already familiar with these materials.
Author : Caroline Christensen
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (943 download)
Download or read book Synthesis and Cross-linking of Anthracene-based Polymers and Optimization of Single-phase Suzuki Polycondensation written by Caroline Christensen and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Conjugated alternating copolymers containing cross-linkable 9,10-bis(hexyloxy)anthracene moieties were synthesized via Suzuki cross-coupling polymerization. Uncross-linked polymers fluoresced due to conjugation in the backbone from 9,10-dihexocyanthracene and comonomers of thiophene or fluorene. The anthracene-based homopolymers had a UV-vis absorbance at 320 nm and emission at 500 nm. Copolymers with thiphene shifted the absorbance to 255 nm, and the anthracene-fluorene copolymers had an absorbance of 360 nm. Upon irradiation, cross-linking in solution and in solid films was achieved through the [4+4] cycloaddition between anthracene units resulting in a loss of fluorescence for all samples due to the deconjugation of the backbone during cross-linking.An investigation regarding the effect of water upon the MW of polyfuluorenes synthesized via Suzuki polycondensation was initiated. Polymers of high MW and low polydispersity were synthesized without the addition of water. Molecular weights in the range of 100,000 g/mol were easily obtained, and we postulate that the reason for this achievement is that removing the bulk aqueous phase from the reaction mixture leads to greater Mn polymers because CPs are inherently insoluble in water and the addition of water to the reaction mixtures in standard conditions could be a factor limiting their ability to achieve higher molecular weights.
Author : Ka-Wing Tsoi
Publisher :
ISBN 13 : 9781361365601
Total Pages : pages
Book Rating : 4.3/5 (656 download)
Download or read book Synthesis of Conjugated Polymers with Pendant Metal Complexes and Study of Their Photophysical Properties written by Ka-Wing Tsoi and published by . This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Synthesis of Conjugated Polymers With Pendant Metal Complexes and Study of Their Photophysical Properties" by Ka-wing, Tsoi, 蔡家榮, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: A series of copolymers based on poly(phenylene thienylene) mainchain that contains pendent bisterpyridine ruthenium(II) complexes was synthesized by palladium catalyzed Suzuki coupling reaction. The polymers contain different proportion of metal complexes. The copolymers exhibit broad absorption band in the visible region due to the conjugated backbone and the bisterpyridine ruthenium complexes. The relative intensity of each absorption band depends on the metal complex contents. There is a significant spectral overlap between the emission of the conjugated polymer mainchain and the absorption of the ruthenium complexes. It was found that there is a quenching of polymer emission by the complexes. Based on the results obtained by spectroscopic studies, it is proposed to be Forster type energy transfer process between the polymer mainchain as the donor and the complexes as the acceptors. Two donor-acceptor molecules with pyrazinopyrazine bridge units were synthesized. They exhibit intramolecular charge transfer character and were characterized by 1 H NMR, FTIR, UV-visible absorption and mass spectrometry. The two compounds have absorption band in the near IR region and exhibit narrow band gap. Through structural modification, their optical and electronic properties can be fine tuned. They have potential applications in organic photovoltaic cells and organic field effect transistors. DOI: 10.5353/th_b5351043 Subjects: Conjugated polymers
Author : Mario Leclerc
Publisher : John Wiley & Sons
ISBN 13 : 9783527629794
Total Pages : 379 pages
Book Rating : 4.6/5 (297 download)
Download or read book Design and Synthesis of Conjugated Polymers written by Mario Leclerc and published by John Wiley & Sons. This book was released on 2010-06-24 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first systematic compilation of synthesis methods for different classes of polymers describes well-tested and reproducible procedures, thus saving time, money and chemicals. Each chapter presents the latest method for a specific class of conjugated polymers with a particular emphasis on the design aspects for organo-electronic applications. In this concise and practically oriented manner, readers are introduced to the strategies of influencing and controlling the polymer properties with respect to their use in the desired device. This style of presentation quickly helps researchers in their daily lab work and prevents them from reinventing the wheel over and over again.
Author : Xing-Hong Zhang
Publisher : John Wiley & Sons
ISBN 13 : 3527823808
Total Pages : 482 pages
Book Rating : 4.5/5 (278 download)
Download or read book Sulfur-Containing Polymers written by Xing-Hong Zhang and published by John Wiley & Sons. This book was released on 2021-03-23 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: A must-have resource to the booming field of sulfur-containing polymers Sulfur-Containing Polymers is a state-of-the-art text that offers a synthesis of the various sulfur-containing polymers from low-cost sulfur resources such as elemental sulfur, carbon disulfide (CS2), carbonyl sulfide (COS) and mercaptan. With contributions from noted experts on the topic, the book presents an in-depth understanding of the mechanisms related to the synthesis of sulfur-containing polymers. The book also includes a review of the various types of sulfur-containing polymers, such as: poly(thioester)s, poly(thioether)s and poly(thiocarbonate)s and poly(thiourethane)s with linear or hyperbranched (dendrimer) architectures. The expert authors provide the fundamentals on the structure-property relationship and applications of sulfur-containing polymers. Designed to be beneficial for both research and application-oriented chemists and engineers, the book contains the most recent research and developments of sulfur-containing polymers. This important book: Offers the first comprehensive handbook on the topic Contains state-of-the-art research on synthesis of sulfur containing polymers from low-cost sulfur-containing compounds Examines the synthesis, mechanism, structure properties, and applications of various types of sulful-containing polymers Includes contributions from well-known experts Written for polymer chemists, materials scientists, chemists in industry, biochemists, and chemical engineers, Sulfur-Containing Polymers offers a groundbreaking text to the field with inforamtion on the most recent research.
Author : Vittorio Farina
Publisher : John Wiley & Sons
ISBN 13 : 9780471312734
Total Pages : 676 pages
Book Rating : 4.3/5 (127 download)
Download or read book The Stille Reaction written by Vittorio Farina and published by John Wiley & Sons. This book was released on 1998-09-18 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: Die Stille-Reaktion ist eine der sehr wenigen Reaktionen, in denen unter milden Bedingungen Kohlenstoff-Kohlenstoff-Bindungen geknüpft werden können. Man verwendet die Reaktion häufig in der Synthese komplizierter Moleküle zur Verknüpfung größerer Molekülbausteine. Die Autoren diskutieren vom präparativen Standpunkt aus Grenzen, Einflüsse, strukturelle Effekte und die Wahl der geeigneten Reaktionsbedingungen. Mit ausführlichen Vorschriften und vielen Beispielen. (11/98)
Author : Peter Balys Balanda
Publisher :
ISBN 13 :
Total Pages : 486 pages
Book Rating : 4.:/5 (377 download)
Download or read book Synthesis of Functionalized Poly(p-phenylene)s Via Palladium Catalyzed Suzuki Cross-coupling Polymerization written by Peter Balys Balanda and published by . This book was released on 1997 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yasushi Nishihara
Publisher : Springer Science & Business Media
ISBN 13 : 3642323685
Total Pages : 247 pages
Book Rating : 4.6/5 (423 download)
Download or read book Applied Cross-Coupling Reactions written by Yasushi Nishihara and published by Springer Science & Business Media. This book was released on 2012-12-14 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Applied Cross-Coupling Reactions” provides students and teachers of advanced organic chemistry with an overview of the history, mechanisms and applications of cross-coupling reactions. Since the discovery of the transition-metal-catalyzed cross-coupling reactions in 1972, numerous synthetic uses and industrial applications have been developed. The mechanistic studies of the cross-coupling reactions have disclosed that three fundamental reactions: oxidative addition, transmetalation, and reductive elimination, are involved in a catalytic cycle. Cross-coupling reactions have allowed us to produce a variety of compounds for industrial purposes, such as natural products, pharmaceuticals, liquid crystals and conjugate polymers for use in electronic devices. Indeed, the Nobel Prize for Chemistry in 2010 was awarded for work on cross-coupling reactions. In this book, the recent trends in cross-coupling reactions are also introduced from the point of view of synthesis design and catalytic activities of transition-metal catalysts.
Author : Liwen Xing
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
Download or read book Dual Catalytic Systems for Cross Dehydrogenative Coupling Toward Donor-acceptor Conjugated Polymer Synthesis written by Liwen Xing and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Donor-acceptor (D-A) conjugated polymers, as one type of organic semiconducting materials, have drawn lots of attention for the application in organic electronics due to their lowered band gaps and high charge mobility. The polymerization based on cross dehydrogenative coupling (CDC) is an atom-economic synthetic method for D-A polymers as it significantly simplifies the overall synthetic routes by applying C-H bond activation during the polymerization. Two different dual catalytic systems – Au/Ag and Pd/Ag for CDC polymerizations were investigated here. Despite both transformations occurring by a similar mechanistic sequence, dramatically different kinetic behaviors and polymerization results were discovered. The Pd/Ag system produced unexpectedly low homocoupling defects and high molecular weight polymers despite the small molecule coupling reaction proceeding inefficiently. Conversely, Au/Ag system produced low molecular weight polymers with lots of homocoupling defects while catalyzing an efficient small molecule coupling reaction. While the findings in this work provide valuable insight for future studies in obtaining high-molecular weight D-A polymers via CDC, these findings could affect the design of substrates in late-stage C−H functionalization.
Author : Maria Rosa Aguilar
Publisher : Woodhead Publishing
ISBN 13 : 0081024177
Total Pages : 704 pages
Book Rating : 4.0/5 (81 download)
Download or read book Smart Polymers and Their Applications written by Maria Rosa Aguilar and published by Woodhead Publishing. This book was released on 2019-02-15 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smart Polymers and Their Applications, Second Edition presents an up-to-date resource of information on the synthesis and properties of different types of smart polymers, including temperature, pH, electro, magnetic and photo-responsive polymers, amongst others. It is an ideal introduction to this field, as well as a review of the latest research in this area. Shape memory polymers, smart polymer hydrogels, and self-healing polymer systems are also explored. In addition, a very strong focus on applications of smart polymers is included for tissue engineering, smart polymer nanocarriers for drug delivery, and the use of smart polymers in medical devices. Additionally, the book covers the use of smart polymers for textile applications, packaging, energy storage, optical data storage, environmental protection, and more. This book is an ideal, technical resource for chemists, chemical engineers, materials scientists, mechanical engineers and other professionals in a range of industries. - Includes a significant number of new chapters on smart polymer materials development, as well as new applications development in energy storage, sensors and devices, and environmental protection - Provides a multidisciplinary approach to the development of responsive polymers, approaching the subject by the different types of polymer (e.g. temperature-responsive) and its range of applications
Author : John R. Reynolds
Publisher : CRC Press
ISBN 13 : 1351659812
Total Pages : 660 pages
Book Rating : 4.3/5 (516 download)
Download or read book Conjugated Polymers written by John R. Reynolds and published by CRC Press. This book was released on 2019-03-27 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fourth Edition of the Handbook of Conducting Polymers, Two-Volume Set continues to be the definitive resource on the topic of conducting polymers. Completely updated with an extensive list of authors that draws on past and new contributors, the book takes into account the significant developments both in fundamental understanding and applications since publication of the previous edition. One of two volumes comprising the comprehensive Handbook, Conjugated Polymers: Perspective, Theory, and New Materials features new chapters on the fundamental theory and new materials involved in conducting polymers. It discusses the history of physics and chemistry of these materials and the theory behind them. Finally, it details polymer and materials chemistry including such topics as conjugated block copolymers, metal-containing conjugated polymers, and continuous flow processing. Aimed at researchers, advanced students, and industry professionals working in materials science and engineering, this book covers fundamentals, recent progress, and new materials involved in conducting polymers and includes a wide-ranging listing of comprehensive chapters authored by an international team of experts.
