Download or read book The Synthesis of Precursors to Conjugated Polymers written by Heather Davis and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conjugated Polymers written by Klaus Mullen and published by Royal Society of Chemistry. This book was released on 2014 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conjugated polymers are gaining a lot of interest due to their inherent functional properties and applications in plastic electronics. In order to develop new functional polymers researchers need the background information on the synthesis of the different polymer systems. This book focuses on the practical preparation of conjugated polymers with each chapter discussing a particular type of conjugated polymer including a general explanation of the polymer, experimental details for synthesis and characterization.
Download or read book Conjugated Polymers written by J.L. Brédas and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis of Conjugated Polymers with Alternating Aromatic and Quinonoid Sequences Via Elimination on Precursors written by Samson A. Jenekhe and published by . This book was released on 1986 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: An elimination reaction for the formation of conjugated polymers from polymer precursors containing alternating sp superscript 3 carbon atom and conjugatged segments in the main chain is described. The resulting conjugated polymers with alternating aromatic and quinonoid sequences are inaccessible by conventional polymerization processes. The Pi-electron conjugation extension process is exemplified by reactions performed on poly(5,5', alpha-bithiophenediyl p acetoxybenzylidene) at 23 C and followed by electronic and infrared spectra. The semiconductor band gap narrowed from an initial value of 1.53 ev for the precursor polymer to about 0.83 ev for the conjugated derivative. Further evidence for the sp superscript 3 to sp superscript 2 carbon atom conversion by the elimination process is provided by infrared data.
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.
Download or read book Synthesis of Monomers and Polymeric Precursors to Impart Processability and Patternability to Conducting Polymers written by Arvind Kumar and published by . This book was released on 2006 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis of Conjugated Polymers Via Polymer Elimination Reactions written by Samson A. Jenekhe and published by . This book was released on 1987 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The transformation of nonconjugated polymers into conjugated polymers using elimination reactions is described. Heterocyclic conjugated polymers containing alternating aromatic and quinonoid sections in the main chain are synthesized by chemical or electrochemical redox elimination reaction on soluble precursor polymers containing sp3 carbon atom bridges between the aromatic heterocyclic units. Progress of the redox elimination process is followed by infrared and electronic spectra as well as by cyclic voltammetry. A reaction mechanism in which the precursor polymer undergoes a redox reaction followed by loss of the bridge hydrogens is proposed. The resulting conjugated aromatic/quinonoid polymers generally have very small semiconductor band gaps in accord with predictions of recent theoretical calculations. A brief view of related syntheses of conjugated polymers from nonconjugated precursor polymers is also given.
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 2017-01-18 with total page 314 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.
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.
Download or read book Solution Processable Components for Organic Electronic Devices written by Beata Luszczynska and published by John Wiley & Sons. This book was released on 2019-09-16 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides first-hand insights into advanced fabrication techniques for solution processable organic electronics materials and devices The field of printable organic electronics has emerged as a technology which plays a major role in materials science research and development. Printable organic electronics soon compete with, and for specific applications can even outpace, conventional semiconductor devices in terms of performance, cost, and versatility. Printing techniques allow for large-scale fabrication of organic electronic components and functional devices for use as wearable electronics, health-care sensors, Internet of Things, monitoring of environment pollution and many others, yet-to-be-conceived applications. The first part of Solution-Processable Components for Organic Electronic Devices covers the synthesis of: soluble conjugated polymers; solution-processable nanoparticles of inorganic semiconductors; high-k nanoparticles by means of controlled radical polymerization; advanced blending techniques yielding novel materials with extraordinary properties. The book also discusses photogeneration of charge carriers in nanostructured bulk heterojunctions and charge carrier transport in multicomponent materials such as composites and nanocomposites as well as photovoltaic devices modelling. The second part of the book is devoted to organic electronic devices, such as field effect transistors, light emitting diodes, photovoltaics, photodiodes and electronic memory devices which can be produced by solution-based methods, including printing and roll-to-roll manufacturing. The book provides in-depth knowledge for experienced researchers and for those entering the field. It comprises 12 chapters focused on: ? novel organic electronics components synthesis and solution-based processing techniques ? advanced analysis of mechanisms governing charge carrier generation and transport in organic semiconductors and devices ? fabrication techniques and characterization methods of organic electronic devices Providing coverage of the state of the art of organic electronics, Solution-Processable Components for Organic Electronic Devices is an excellent book for materials scientists, applied physicists, engineering scientists, and those working in the electronics industry.
Download or read book The Economic Utilisation of Food Co Products written by Abbas Kazmi and published by Royal Society of Chemistry. This book was released on 2013-10-09 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the world’s population continues to grow so does the demand for food, and in consequence the amount of material left over from food production. No longer considered simply as "waste", many food co-products are being identified as economically-viable raw materials and their potential is enhanced by modern processing technologies and the biorefinery concept. This book presents a general overview of the current situation, with perspectives from within the food industry and policy makers in the introductory chapters. These are followed by five chapters exploring modern advanced processing techniques. Further chapters are dedicated to separate food groups, including cereals, oils, rice and fish, exploring the potential for making the best use of the co-products generated. Many of the processing technologies discussed will be familiar to students and practitioners of green chemistry, but the book goes further in presenting examples and case studies, written by active workers in the field from across the globe. Food technicians and process engineers will be amongst the researchers in academia and industry and postgraduate students this book is aimed for.
Download or read book Synthesis of Polymers Expected to Have Superconducting Properties written by J. H. Hodgkin and published by . This book was released on 1971 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the research program was the synthesis and evaluation of organic polymers which on theoretical grounds might exhibit superconducting properties at or near room temperature. The report discusses research on the synthesis of a conjugated polymer chain that could be adequately characterized, and then on the attachment of dye molecules, as close as possible to this chain, without allowing cross conjugation. One approach was the synthesis and characterization of Schiffbase polymers with side-chain dye molecules. Considerable effort was devoted to the preparation of low molecular weight model compounds to define reaction conditions necessary for high polymer formation and to provide complete electronic spectra for the computational program. However, when efforts were made to combine the dye molecules and conjugated polymers, steric hindrance prevented the synthesis of the proposed polymers. In a second approach, efforts were made to avoid the problem of steric hindrance by synthesizing modified Schiff-base polymers from 2,5-dihydroxybenzoquinone and various substituted diamines. Polymers were prepared with and without attached dye groups and also as metal complexes; however, electrical testing of these materials indicated that they were insulators. Another approach included the synthesis of a conjugated spine of dehydrogenated poly-9-vinylanthracene with dye precursors attached through chloromethyl groups on the anthracene units. Electrical testing indicated that they were insulators. The final approach tried was the use of poly-4-chloropyridine as the conjugated chain and again the attachment of the dye precursor via a chloromethyl group. (Author).
Download or read book Synthesis of Conjugated Polymers written by Chao Wang and published by . This book was released on 2013 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conjugated polymers (CPs) are a unique class of materials because they possess the electronic properties of semi-conductors and processability of polymers. Their electronic and optical properties can be controlled by their chemical structures and conjugation length. To enhance the electron affinity of CPs, a series of boron-containing CPs were synthesized with arylene-borylene units. One of the boron-containing polymer had indeed shown the ability of quenching the photoluminescence of poly(3-hexylthiophene) (P3HT), indicating possible exciton separation and charge transfer. Next, a ketone group was introduced to polythiophene to lower its LUMO level and increase the electron affinity. Regioregular poly(3-heptanoylthiophene) (PHOT) was synthesized. The polymerization was realized by Ni-catalyzed Kumada coupling with a chain-growth mechanism. Schlenk equilibrium played a key role in the generation of the monomer for the polymerization. PHOT was fully characterized by various techniques. However, only p-channel activity was observed in field-effect transistors (FETs) for PHOT. The hole mobility was one order lower than that of P3HT. Photovoltaic devices with an active layer of 1:1 blend of PHOT and PC71BM had a low power conversion efficiency of ~0.5%. Finally, the synthesis of graphene nanoribbons (GNRs) was attempted which could be potentially used as a good charge carrier. To prevent intramolecular and intermolecular side reactions during Scholl reaction, the precursors, oligo-naphthalenes with alkoxy groups capping the 2, 3, 6, and 7-positions had been synthesized. Intramolecular ring fusion via the Scholl reations was tested, but no expected GNRs were formed.
Download or read book Conjugated Polymers from Precursors and Their Applications written by Ki-Ryong Lee and published by . This book was released on 2012 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Linear and Dendritic Conjugated Polymer Networks for Electro optical Applications written by Ramakrishna Reddy Ponnapati and published by . This book was released on 2009 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Synthesis of New Maleimide Addition Polymer Precursors written by Richard B. Brown and published by . This book was released on 1975 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Synthesis of Conjugated Polymers written by James V. Crivello and published by . This book was released on 1966 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
