Download or read book Polymers and Pyridazines written by Péter Tétényi and published by CRC Press. This book was released on 2019-05-29 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past few years, a few articles have been published on the solid-phase synthesis of pyridazine derivatives. These methods apply to intermediates weakly bound to polymers, as a result of which the ester bond is cleaved easily, either during ring closure or right after it. There are few polymer-supported syntheses of heterocycles. This book, Polymers and Pyridazines, discusses a new strategy for polymer-supported synthesis of pyridazine derivatives with much higher reaction rates, applying higher loading and much wider reaction conditions due to the more stable attachment. On the basis of the research conducted, a fundamental break-through was achieved in solid-phase heterocyclic chemistry. The experiments are accompanied by colored drawings and 3D diagrams to help understand the importance of swelling and/or excess concentrations of reagents. Detailed experiments provide complete procedures with infrared difference spectra. The book will be a helpful reference for academy polymer specialists and postgraduate students studying polymer syntheses of general substrates.
Download or read book Polymers and Pyridazines written by Péter Tétényi and published by CRC Press. This book was released on 2019-05-29 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past few years, a few articles have been published on the solid-phase synthesis of pyridazine derivatives. These methods apply to intermediates weakly bound to polymers, as a result of which the ester bond is cleaved easily, either during ring closure or right after it. There are few polymer-supported syntheses of heterocycles. This book, Polymers and Pyridazines, discusses a new strategy for polymer-supported synthesis of pyridazine derivatives with much higher reaction rates, applying higher loading and much wider reaction conditions due to the more stable attachment. On the basis of the research conducted, a fundamental break-through was achieved in solid-phase heterocyclic chemistry. The experiments are accompanied by colored drawings and 3D diagrams to help understand the importance of swelling and/or excess concentrations of reagents. Detailed experiments provide complete procedures with infrared difference spectra. The book will be a helpful reference for academy polymer specialists and postgraduate students studying polymer syntheses of general substrates.
Download or read book Hydroxy Sulfoxide and Pyridazine containing Polymeric Building Blocks written by Moo-Il Chung and published by . This book was released on 1983 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cyclopentadienyl Pyridazines Oxazines and Thiophenes and Their Applications in Energy and Advanced Electronics written by Nathan Tice and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to their unique properties including environmental stability, high processibility, and low production cost, organic-based electronic materials are an attractive alternative to conventional inorganic semiconductors for use in advanced electronic applications. The growing interest and demand for renewable energy and next generation electronic devices has led to the incorporation of aromatic heterocycles into field-effect transistors (FETs), organic light-emitting diodes (OLEDs), and organic photovoltaic (OPV) cells. Specifically, thiophenes, furans, and pyridazines (6-membered aromatic rings containing two adjacent nitrogen atoms) represent alluring building blocks for electronic materials due to their ease of synthesis and stability. In addition, while oxazines (6-membered rings with an adjacent oxygen and nitrogen) have been utilized for their medicinal properties, they also possess interesting redox and optical properties. Polymers and discrete molecules/oligomers incorporating these heterocycles have shown promise in a number of commercial and industrial applications. Our current investigation focuses on the off-metal and transition metal chemistry of thiophenes, furans, pyridazines, and oxazines namely, the formation of fused-ring complexes bound u03b75 to a metal through a Cp moiety. By including a transition metal into fused-heterocycles, we hope to create hybrid materials which blend the synthetic versatility of organics with the novel structural and electronic properties that inorganic moieties possess. For example, formation of the desired complexes, [M(CO)3{u03b75-1,2-C5H3(1,4-(R)2N2C2}] (M = Mn, Re), was accomplished from a 1,2-diketo precursor, [M(CO)3{u03b75-1,2-C5H3(COR)2}] (R= 4-ClPh, 4-MeOPh, 5-BrTp). Reaction of these 1,2-diketo complexes with excess hydrazine under mild conditions (room temperature) afforded the desired pyridazine complexes in good yield (60-83%). These complexes display high solid state stability in air and relatively good stability in solution. Additionally, computational studies were performed on both these on- and off-metal heterocycles, including electrostatic potential mapping and natural bonding orbital modeling. Electrochemical polymerization of the free thienyl pyridazine ligand and corresponding organometallic complex via Cyclic Voltammetry (CV) was accomplished as well, affording redox stable thin films. CV studies were also performed on a number of the other on- and off-metal oxazines, pyridazines, and thiophenes.
Download or read book The Chemistry of Polymers written by Margaret Morris and published by . This book was released on 2020-09-22 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scientific field that is concerned with the chemical synthesis, structure, and the physical and chemical properties of polymers and macromolecules is known as polymer chemistry. Its principles and methods are also applicable in a variety of sub-disciplines of chemistry such as organic chemistry, physical chemistry and analytical chemistry. On the basis of their origin, polymers are subdivided into biopolymers and synthetic polymers. The functional and structural materials that make most of the organic matter in organisms are biopolymers. Synthetic polymers are the structural materials that are manifested in synthetic fibers, paints, building materials, furniture, plastics, mechanical parts and adhesives. This book is a compilation of chapters that discuss the most vital concepts in the field of polymer chemistry. Some of the diverse topics covered herein address the varied branches that fall under this category. Those in search of information to further their knowledge will be greatly assisted by this book.
Download or read book The Synthesis and Reactions of Pyridazines Condensed Pyridazines and Polycyclic Thiophenes written by Robert Douglas Thompson and published by . This book was released on 1981 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Energetic Materials written by National Research Council and published by National Academies Press. This book was released on 2004-01-30 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced energetic materialsâ€"explosive fill and propellantsâ€"are a critical technology for national security. While several new promising concepts and formulations have emerged in recent years, the Department of Defense is concerned about the nation's ability to maintain and improve the knowledge base in this area. To assist in addressing these concerns, two offices within DOD asked the NRC to investigate and assess the scope and health of the U.S. R&D efforts in energetic materials. This report provides that assessment. It presents several findings about the current R&D effort and recommendations aimed at improving U.S. capabilities in developing new energetic materials technology. This study reviewed U.S. research and development in advanced energetics being conducted by DoD, the DoE national laboratories, industries, and academia, from a list provided by the sponsors. It also: (a) reviewed papers and technology assessments of non-U.S. work in advanced energetics, assessed important parameters, such as validity, viability, and the likelihood that each of these materials can be produced in quantity; (b) identified barriers to scale-up and production, and suggested technical approaches for addressing potential problems; and (c) suggested specific opportunities, strategies, and priorities for government sponsorship of technologies and manufacturing process development.
Download or read book Advances in Heterocyclic Chemistry written by and published by Academic Press. This book was released on 1990-10-25 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Heterocyclic Chemistry
Download or read book Polymeric Materials in Organic Synthesis and Catalysis written by Michael R. Buchmeiser and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to describe the synthesis and characterization of the materials used in polymer-supported synthesis. The authors cover not only the classical polymers and their use in homogeneous, heterogeneous and micellar catalysis, but also such new developments as "enzyme-labile linkers", illustrating how to simplify the purification process and avoid waste. The result is a wealth of useful information -- for beginners and experts alike - in one handy reference, removing the need for difficult and time-consuming research among the literature.
Download or read book Polymer Science U S S R written by and published by . This book was released on 1967 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Pyridazines Volume 57 Supplement 1 written by Desmond J. Brown and published by John Wiley & Sons. This book was released on 2000-01-03 with total page 723 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new volume substantially updates the original pyridazines volume which was published in 1973. Announcing the latest volume in the successful and prominent Chemistry of Heterocyclic Compounds Series.
Download or read book Pyridazines Volume 28 written by Raymond N. Castle and published by John Wiley & Sons. This book was released on 2009-09-15 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Chemistry of Heterocyclic Compounds, since its inception, has been recognized as a cornerstone of heterocyclic chemistry. Each volume attempts to discuss all aspects – properties, synthesis, reactions, physiological and industrial significance – of a specific ring system. To keep the series up-to-date, supplementary volumes covering the recent literature on each individual ring system have been published. Many ring systems (such as pyridines and oxazoles) are treated in distinct books, each consisting of separate volumes or parts dealing with different individual topics. With all authors are recognized authorities, the Chemistry of Heterocyclic Chemistry is considered worldwide as the indispensable resource for organic, bioorganic, and medicinal chemists.
Download or read book Subject Headings Used in the Catalogs of the United States Atomic Energy Commission written by and published by . This book was released on 1965 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1992 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polymers in Organic Electronics written by Sulaiman Khalifeh and published by Elsevier. This book was released on 2020-04-01 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers in Organic Electronics: Polymer Selection for Electronic, Mechatronic, and Optoelectronic Systems provides readers with vital data, guidelines, and techniques for optimally designing organic electronic systems using novel polymers. The book classifies polymer families, types, complexes, composites, nanocomposites, compounds, and small molecules while also providing an introduction to the fundamental principles of polymers and electronics. Features information on concepts and optimized types of electronics and a classification system of electronic polymers, including piezoelectric and pyroelectric, optoelectronic, mechatronic, organic electronic complexes, and more. The book is designed to help readers select the optimized material for structuring their organic electronic system.Chapters discuss the most common properties of electronic polymers, methods of optimization, and polymeric-structured printed circuit boards. The polymeric structures of optoelectronics and photonics are covered and the book concludes with a chapter emphasizing the importance of polymeric structures for packaging of electronic devices. Provides key identifying details on a range of polymers, micro-polymers, nano-polymers, resins, hydrocarbons, and oligomers Covers the most common electrical, electronic, and optical properties of electronic polymers Describes the underlying theories on the mechanics of polymer conductivity Discusses polymeric structured printed circuit boards, including their rapid prototyping and optimizing their polymeric structures Shows optimization methods for both polymeric structures of organic active electronic components and organic passive electronic components
Download or read book Advances in Heterocyclic Chemistry written by Alan R. Katritzky and published by Academic Press. This book was released on 2009-06-04 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Established in 1960, Advances in Heterocyclic Chemistry is the definitive serial in the area—one of great importance to organic chemists, polymer chemists, and many biological scientists. Written by established authorities in the field, the comprehensive reviews combine descriptive chemistry and mechanistic insight and yield an understanding of how the chemistry drives the properties. Provides up-to-date material on a fast growing and highly topical subject area Contains the latest research covering a wide variety of heterocyclic topics Written by leading authorities and designed as a handbook for students and industry and academic researchers
Download or read book Chemoselective and Bioorthogonal Ligation Reactions written by W. Russ Algar and published by John Wiley & Sons. This book was released on 2017-03-17 with total page 923 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely, one-stop reference is the first on an emerging and interdisciplinary topic. Covering both established and recently developed ligation chemistries, the book is divided into two didactic parts: a section that focuses on the details of bioorthogonal and chemoselective ligation reactions at the level of fundamental organic chemistry, and a section that focuses on applications, particularly in the areas of chemical biology, biomaterials, and bioanalysis, highlighting the capabilities and benefits of the ligation reactions. With chapters authored by outstanding scientists who range from trailblazers in the field to young and emerging leaders, this book on a highly interdisciplinary topic will be of great interest for biochemists, biologists, materials scientists, pharmaceutical chemists, organic chemists, and many others.
