Photochemistry History And Commercial Applications Of Hexaarylbiimidazoles

Author: Rolf Dessauer
Publisher: Elsevier
ISBN: 9780080466798
Size: 10.50 MB
Format: PDF
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The objective of this book is to acquaint the reader with a novel class of photochemical oxidants and polymerization initiators that have become widely accepted in industry. As most of the work with these materials is reported in the patent literature, an effort has been made to study this area of scientific activity, as well as present a thorough review of the journal publications. Photochemistry, History and Commercial Applications of HABIs also presents new technologies such as waveguides, holography along with some more traditional applications (i.e. filters, litho plates, and photoresists). A complete review of technology associated with hexaarylbiimidazoles

Photochromic Materials

Author: He Tian
Publisher: John Wiley & Sons
ISBN: 3527683720
Size: 11.34 MB
Format: PDF
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Summarizing all the latest trends and recent topics in one handy volume, this book covers everything needed for a solid understanding of photochromic materials. Following a general introduction to organic photochromic materials, the authors move on to discuss not only the underlying theory but also the properties of such materials. After a selection of pplications, they look at the latest achievements in traditional solution-phase applications, including photochromic-based molecular logic operations and memory, optically modulated supramolecular system and sensors, as well as light-tunable chemical reactions. The book then describes the hotspot areas of photo-switchable surfaces and nanomaterials, photochromic-based luminescence/electronic devices and bulk materials together with light-regulated biological and bio-chemical systems. The authors conclude with a focus on current industrial applications and the future outlook for these materials. Written with both senior researchers and entrants to the field in mind.

Processes In Photoreactive Polymers

Author: V.V. Krongauz
Publisher: Springer Science & Business Media
ISBN: 1461517672
Size: 63.84 MB
Format: PDF, ePub, Mobi
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The development of photosensitive materials in general and photoreactive polymers in particular is responsible for major advances in the information, imaging, and electronic industries. Computer parts manufacturing, information storage, and book and magazine publishing all depend on photoreactive polymer systems. The photo-and radiation-induced processes in polymers are also active areas of research. New information on the preparation and properties of com mercially available photosensitive systems is constantly being acquired. The recent demand for environmentally safe solvent-free and water-soluble materials also motivated changes in the composition of photopolymers and photoresists. The interest in holographic recording media for head-up displays, light scanners, and data recording stimulated development of reconfigurable and visible light sensitive materials. Photoconductive polymerizable coatings are being tested in electrostatic proofing and color printing. The list of available initiators, poly meric binders, and other coating ingredients is continually evolving to respond to the requirements of low component loss (low diffusivity) and the high rate of photochemical reactions.

Photon Working Switches

Author: Yasushi Yokoyama
Publisher: Springer
ISBN: 4431565442
Size: 34.62 MB
Format: PDF, Kindle
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This book focuses on photoswitches. The objective of the book is to introduce researchers and graduate course students who are interested in "photon-working switches" not only to the fundamentals but also to the latest research being carried out in this field. Light can reach a target substrate without any physical contact to deliver energy. The energy can induce changes in the structure of the molecules included in the substrate so that its properties and functions are made switchable by light irradiation. When a substrate is able to revert to its original state, this system can be regarded as a "photon-working switch". The terms "photon-working switches" or "photoswitches" are almost equivalent in meaning to "photochromism"; however, they focus on the "switching of functions" of chemical species rather than their "reversible transformation". Most of the authors of this volume are members of PHENICS, an international research group on organic molecular photoswitches composed of research institutions from France, Japan, Russia, China and Germany. Since its inception in 2008, PHENICS has promoted active research to develop the field. This book commemorates the group's eighth year of collaborative research.

Advances In Synthetic Organic Chemistry And Methods Reported In Us Patents

Author: Thomas F. DeRosa
Publisher: Elsevier
ISBN: 9780080455631
Size: 40.47 MB
Format: PDF
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Advances in Synthetic Organic Chemistry and Methods Reported in US Patents provides synthetic guidelines for preparing current and commercially significant organic compounds, derivatives, and intermediates as reported in issued US Patents. Industries surveyed include agrochemical, cosmetics and personal care products. Each entry contains extensive information such as explicit laboratory directions for preparing all chemical intermediates and characterization data. Furthermore, product optimization studies, industrial preparation, and new synthetic methods have been included for selected entries, as well as projected research directions for future product development. In Advances in Synthetic Organic Chemistry and Methods Reported in US Patents the author's practical approach enables readers to identify research and market trends, and stay up-to-date on current developments in the field. Provides synthetic guidelines for preparing current and commercially significant organic compounds, derivatives, and intermediates as reported in issued US Patents Identifies product development trends to help determine research areas Elucidates use of the US Patent and Trademark Office database

Laser Additive Manufacturing

Author: Milan Brandt
Publisher: Woodhead Publishing
ISBN: 0081004346
Size: 21.66 MB
Format: PDF
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Laser Additive Manufacturing: Materials, Design, Technologies, and Applications provides the latest information on this highly efficient method of layer-based manufacturing using metals, plastics, or composite materials. The technology is particularly suitable for the production of complex components with high precision for a range of industries, including aerospace, automotive, and medical engineering. This book provides a comprehensive review of the technology and its range of applications. Part One looks at materials suitable for laser AM processes, with Part Two discussing design strategies for AM. Parts Three and Four review the most widely-used AM technique, powder bed fusion (PBF) and discuss other AM techniques, such as directed energy deposition, sheet lamination, jetting techniques, extrusion techniques, and vat photopolymerization. The final section explores the range of applications of laser AM. Provides a comprehensive one-volume overview of advances in laser additive manufacturing Presents detailed coverage of the latest techniques used for laser additive manufacturing Reviews both established and emerging areas of application

Photochromism Molecules And Systems

Author: Heinz Dürr
Publisher: Elsevier
ISBN: 9780080538839
Size: 28.34 MB
Format: PDF, Mobi
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Photochromism is simply defined as the light induced reversible change of colour. The field has developed rapidly during the past decade as a result of attempts to improve the established materials and to discover new devices for applications. As photochromism bridges molecular, supramolecular and solid state chemistry, as well as organic, inorganic and physical chemistry, such a treatment requires a multidisciplinary approach and a broad presentation. The first edition (1990) provided an enormous amount of new concepts and data, such as the presentation of main families based on the pericyclic reaction mechanism, the review of new families, some bimolecular photocycloadditions and some promising systems. This new edition provides an efficient entry into this flourishing field, with the core content retained from the original work to provide a basic introduction into the different subjects. *Second edition of a work first published in 1990, now revised due to constant development of research. *Including updated lists of references (1989-2001), offering immediate access to recent developments. *Providing great basic interest and high application potential bringing scientists together from chemistry, physics and engineering.

Antimicrobial Textiles

Author: Gang Sun
Publisher: Woodhead Publishing
ISBN: 0081005857
Size: 70.71 MB
Format: PDF
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Antimicrobial textiles have attracted a great deal of interest in recent years due to their potential for reducing the transmission of infection in medical and healthcare environments. Antimicrobial properties can also improve the performance and lifespan of consumer products, and so these fabrics are increasingly finding applications in the wider textile and apparel industry. This book provides systematic coverage of the technologies and materials required for developing these important textiles. In Part One, chapters address key issues and technologies in the creation of antimicrobial textile products. Topics covered include testing and regulation, microencapsulation, sol-gel coating and plasma technologies, nanotechnology and life cycle assessment. Part Two then reviews key antimicrobial agents, such as N-halamines, plant based compounds and photo-active chemicals. Finally, the chapters of Part Three offer detailed reviews of antimicrobial textiles for particular important applications, including medical devices, protective clothing and products with improved durability and longevity. Reviews key issues and technologies in the creation of antimicrobial textile products Offered a detailed overview of by antimicrobial agents and a wide range of important applications Produced by an experienced editor and a distinguished and international team of contributors

Solid Liquid Separation Equipment Selection And Process Design

Author: Steve Tarleton
Publisher: Elsevier
ISBN: 9780080467177
Size: 69.68 MB
Format: PDF, Mobi
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In this volume, the third in a set specifically written for the industrial process and chemical engineer, the authors provide the detailed information on filtration equipment and media which allows the reader to then consider the pre-treatment of suspensions, selection of the most appropriate equipment for the task, data analysis and the subsequent design of the processes involved for particular separations. The result is a comprehensive book which is designed to be used frequently and referred to regularly in order to achieve better industrial separations. Successful industrial-scale separation of solids from liquids requires not only a thorough understanding of the principles involved, but also an appreciation of which equipment to use for best effect, and a start-to-finish plan for the various processes involved in the operation. If these factors are all correct, then successful separations should result. Part of 3-volume set Unique approach to industrial separations Internationally-known authors

Dispersive Kinetics

Author: Andrzej Plonka
Publisher: Springer Science & Business Media
ISBN: 9780792371281
Size: 15.15 MB
Format: PDF
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Dynamical processes in which many timescales coexist are called dispersive. The rate coefficients for dispersive processes depend on time. In the case of a chemical reaction, the time dependence of the rate coefficient, k(t), termed the specific reaction rate, is rationalized in the following way. Reactions by their very nature have to disturb reactivity distributions of the reactants in condensed media, as the more reactive species are the first ones to disappear from the system. The extent of this disturbance depends on the ratio of the rates of reactions to the rate of internal rearrangements (mixing) in the system restoring the initial distribution in reactivity of reactants. If the rates of chemical reactions exceed the rates of internal rearrangements, then the initial distributions in reactant reactivity are not preserved during the course of reactions and the specific reaction rates depend on time. Otherwise the extent of disturbance is negligible and classical kinetics, with a constant specific reaction rate, k, termed the reaction rate constant, may be valid as an approximation. In condensed media dispersive dynamical processes are endemic and this is the first monograph devoted to these processes.