Download or read book Preparation and Characterization of Nucleobase Functionalized Poly phenylenevinylene written by Alan Blayney and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Conjugated polymers (CPs) are unique among organic materials due to their diverse electrical and optical properties. Whereas most polymers are excellent insulators, conducting and semiconducting CPs have found use in several domains of electronics as active circuit components. Their use, however, is limited in part by their relatively disordered microstructure compared to other electronic materials, and the impact this has on their properties. Although polymers are usually microscopically disordered materials, DNA nanotechnology has emerged as a means of creating well-defined structures on remarkably small scales using purely polymeric systems. This fine morphology control is enabled by the great strength and specificity of the base-pairing interactions that take place between / moieties pendant to the main polymer chain. Despite being created by evolution in biological systems, these interactions have been harnessed in entirely artificial contexts as a means of controlling the spatial position of not just DNA strands, but also various functional materials. Inspired by the successes of structural DNA nanotechnology, the synthesis of a nucleobase-functionalized conjugated polymer (NB-CP) has been investigated. Poly(phenylenevinylene) can be used in the production of a wide array of electronic devices, and has been extensively studied. As such, it provided an excellent model system with which to explore the nucleobase-driven control of interactions between CPs. We conducted a thorough review of the diverse synthetic approaches that have been applied to the preparation of PPV, and palladium-catalyzed polymerizations were identified as promising methods of preparing the material. The Stille, Mizoroki-Heck, and Suzuki couplings were explored. Using the Stille reaction, achieving sufficiently large molecular weights proved challenging. Mizoroki-Heck polycondensation under optimized conditions overcame this problem; however, the resulting material was found to contain structural defects due to poor regioselectivity. A new monomer was therefore prepared, and it was found that that the Suzuki coupling could produce low-defect PPV with a degree of polymerization greater than 30. This method was then used to prepare both adenine- and thymine-substituted PPV, which were found to have higher photoluminescence quantum yield than the parent PPV. " --

Download or read book Synthesis and Characterization of Poly p phenylene Vinylene written by Hiren Shah and published by . This book was released on 1995 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Characterization of Nucleobase Functionalized Polymers written by Lowie Maes (Doctor of Sciences: Chemistry) and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Characterization of Nucleobase Functionalized Polymers written by Lowie Maes and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preparation and Characterisation of Poly phenylenevinylene s Via Ring Opening Metathesis Polymerisation written by Chin-Yang Yu and published by . This book was released on 2007 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemical Structural and Electrical Characterization of Poly p phenylene Vinylene written by David R. Gagnon and published by . This book was released on 1986 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molecular Architectonics and Nanoarchitectonics written by Thimmaiah Govindaraju and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the ultimate assembly of recent research activities on molecular architectonics and nanoarchitectonics by authors who are worldwide experts. The book proposes new ways of creating functional materials at the nano level using the concepts of molecular architectonics and nanoarchitectonics, which are expected to be the next-generation approaches beyond conventional nanotechnology. All the contents are categorized by types of materials, organic materials, biomaterials, and nanomaterials. For that reason, non-specialists including graduate and undergraduate students can start reading the book from any points they would like. Cutting-edge trends in nanotechnology and material sciences are easily visible in the contents of the book, which is highly useful for both students and experimental materials scientists. .

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.

Download or read book Future Directions in Biocatalysis written by Tomoko Matsuda and published by Elsevier. This book was released on 2017-08-11 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Future Directions in Biocatalysis, Second Edition, presents the future direction and latest research on how to utilize enzymes, i.e., natural catalysts, to make medicines and other necessities for humans. It emphasizes the most important and unique research on biocatalysis instead of simply detailing the ABC’s on the topic. This book is an indispensable tool for new researchers in the field to help identify specific needs, start new projects that address current environmental concerns, and develop techniques based on green technology. It provides invaluable hints and clues for conducting new research on enzymes, with final sections outlining future directions in biocatalysis further expanding the science into new applications. Gives future directions in the area of biocatalysis research Presents research topics based on their uniqueness, originality, and novelty Includes many explanatory figures to demonstrate concepts to both organic chemists and biochemists Shows that there is no boundary between organic chemistry and biochemistry

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 Chitooligosaccharides written by Se-Kwon Kim and published by Springer Nature. This book was released on 2022-02-23 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book outlines the production of chitooligossacharides and their derivatives and discusses their main biological activities, biomedical applications and their role in disease prevention. Chitooligosaccharides are products of chitosan or chitin degradation, prepared by enzymatic or chemical hydrolysis of chitosan, and they consist mainly of N-acetyl glucosamine and glucosamine bonded with a glycosidic bond. Compared to chitin and chitosan, chitooligossacharides offer advantages for large-scale and commercial applications due to their solubility in water and lower molecular weight. Written by leading experts, this book is divided into four parts. The first part provides a general introduction to chitooligossacharides. The second part focuses on the bioproduction of chitooligossacharides through enzymatic synthesis and also covers physical and chemical methods of synthesis. The third part explores the major biological activities of chitooligosaccharides, including antioxidant, antimicrobial, anti-allergic, anti-inflammatory, anti-cancer and neuroprotective activities, and discusses the disease preventing mechanisms of chitooligosaccharides. In this section, readers will also find about the latest in vivo studies which support the use of chitooligosaccharides in the prevention and control of disease. The final part highlights important biomedical applications of chitooligosaccharides, including in tissue engineering, drug delivery and wound healing applications. It also includes the volume editor’s perspective on the health and safety risks of chitooligosaccharides. Given its scope, this book is useful not only for researches in the field but also for students interested in biomaterials, pharmaceuticals, marine biotechnology, nutraceuticals and food science.

Download or read book Biopolymers PVA Hydrogels Anionic Polymerisation Nanocomposites written by and published by Springer. This book was released on 2003-07-01 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Charge and Exciton Transport through Molecular Wires written by Laurens D. A. Siebbeles and published by John Wiley & Sons. This book was released on 2011-07-18 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: As functional elements in opto-electronic devices approach the singlemolecule limit, conducting organic molecular wires are the appropriate interconnects that enable transport of charges and charge-like particles such as excitons within the device. Reproducible syntheses and a thorough understanding of the underlying principles are therefore indispensable for applications like even smaller transistors, molecular machines and light-harvesting materials. Bringing together experiment and theory to enable applications in real-life devices, this handbook and ready reference provides essential information on how to control and direct charge transport. Readers can therefore obtain a balanced view of charge and exciton transport, covering characterization techniques such as spectroscopy and current measurements together with quantitative models. Researchers are thus able to improve the performance of newly developed devices, while an additional overview of synthesis methods highlights ways of producing different organic wires. Written with the following market in mind: chemists, molecular physicists, materials scientists and electrical engineers.

Download or read book Recent Advances in Density Functional Methods written by Delano Pun Chong and published by World Scientific. This book was released on 1995 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of all the different areas in computational chemistry, density functional theory (DFT) enjoys the most rapid development. Even at the level of the local density approximation (LDA), which is computationally less demanding, DFT can usually provide better answers than Hartree-Fock formalism for large systems such as clusters and solids. For atoms and molecules, the results from DFT often rival those obtained by ab initio quantum chemistry, partly because larger basis sets can be used. Such encouraging results have in turn stimulated workers to further investigate the formal theory as well as the computational methodology of DFT.This Part II expands on the methodology and applications of DFT. Some of the chapters report on the latest developments (since the publication of Part I in 1995), while others extend the applications to wider range of molecules and their environments. Together, this and other recent review volumes on DFT show that DFT provides an efficient and accurate alternative to traditional quantum chemical methods. Such demonstration should hopefully stimulate frutiful developments in formal theory, better exchange-correlation functionals, and linear scaling methodology.

Download or read book Sulfur Chemistry written by Xuefeng Jiang and published by Springer Nature. This book was released on 2019-08-28 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.

Download or read book Fluorescent Organic Nanoparticles written by Waseem A. Wani and published by Springer. This book was released on 2018-09-27 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a critical review of recent advances in the development of fluorescent organic nanoparticles as materials of choice for the design and fabrication of sensors, bioimaging agents and drug delivery systems. The properties and functions of nanoparticles differ significantly from those of their parent entities or their bulk phases. Two of their most important features are their increased surface-to volume ratio, and the formation of surface structures differing from those in their bulk phases. In addition, the book discusses the synthesis of fluorescent conjugated polymers, self-assembled fluorescent nanoparticles, polydopamine nanoparticles, and aggregation-induced-emission or aggregation-induced-emission enhancement nanomaterials. In closing, the book provides an outlook on future research and development in fluorescent organic nanoparticles as smart materials with an impressive range of potential applications.

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)