Download or read book Light Absorption of Organic Colorants written by J. Fabian and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although studies on synthetic dyes have been performed for more than 100 years, their detailed elucidation requires further extensive research. The discovery of novel high polymers, the necessity of supplying a whole range of shades and increasing require ments for dyestuffs of high fastness properties give rise to a permanent search for new dyes. Extensive investigations on dyes were also occasioned by various applications in the field of spectral sensitization and of staining of biological specimens. Another more recent development concerns the lasing properties of some organic dyes. Most of the progress, however, was only achieved by time-consuming, purely empirical approaches and theoretical understanding of the dye properties is only at its very beginnings. The color is the sine qua non of every dye. For this reason organic chemists and color chemists have looked for relations between the "color and constitution" of dye molecules for a long time. This knowlege as a whole is known as "theory of color". The classic theory of color was established abou t 100 years ago by Witt and was signi ficantly extended 50 years later by W. Konig.

Download or read book High Technology Applications of Organic Colorants written by P. Gregory and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The traditional use of organic colorants is to impart color to a substrate such as textiles, paper, plastics, and leather. However, in the last five years or so organic colorants have become increasingly important in the high technology (hi-tech) industries of electronics and particularly reprographics. In some of these reprographics applications the organic colorant is used in its traditional role of imparting color to a substrate, typically paper or plastic. Examples are dyes for ink-jet printing, thermally transferable dyes for thermal transfer printing, and dyes and pigments for colored toners in photocopiers and laser printers. In other applications it is a special effect of an organic colorant that is utilized, not its color. Examples are electrical effects, such as photoconduction and the electrostatic charging of toners, both of which are essential features for the operation of photocopiers and laser printers, and the selective absorption of infrared radiation, which is utilized in optical data storage. In electronic applications the organic colorant is often employed in a device. Typical examples include liquid crystal dyes, laser dyes, electro chromic dyes, dyes for solar cells, dyes for micro color filters, and dyes for nonlinear optical applications.

Download or read book Color Chemistry written by Heinrich Zollinger and published by John Wiley & Sons. This book was released on 2003 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the ten years since publication of the second edition of Heinrich Zollinger's "Color Chemistry", significant trends in colorant research and application have become important. Particular emphasis is given to the discussion of the synthesis, properties, and application of pigments.

Download or read book Analytical Chemistry of Synthetic Colorants written by A.T. Peters and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than one and a half decades have passed since the last book was published describing developments in the analytical chemistry of synthetic colorants. In the intervening period, the scope and technical capabilities of instrumentation for analysing dyes and pigments has significantly expanded. It is now possible to rapidly resolve a number of problems whose solutions were previously either unattainable or very difficult to achieve. For instance, the unambiguous assignment of all the signals in the proton NMR spectrum of a trisazo direct dye, and the confirmation of the molecular weight of involatile, and, in particular, sulphonated dyes, without derivatisation, are now routine analytical techniques in many laboratories today. In addition, it is now possible to record the NMR spectrum of a dye molecule on less than 1 mg of material, and we are no longer limited to solution spectra, since solid samples can now be routinely analysed in NMR experiments. Whilst not attempting to be all encompassing, this volume is intended to bridge the gap between what was covered in the earlier work edited by Professor Venkataraman and the developments which have since ensued in some key areas. It provides important updates in X-ray crystallography, proton NMR, IR spectroscopy and mass spectrometry, and additionally covers topics such as ESR, micro spectrophotometry and emission spectroscopy.

Download or read book Handbook on Natural Pigments in Food and Beverages written by Ralf Schweiggert and published by Elsevier. This book was released on 2023-10-24 with total page 643 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook on Natural Pigments in Food and Beverages: Industrial Applications for Improving Color, Second Edition focuses on a color solution for a specific commodity, providing food scientists with a one-stop, comprehensive reference on how to improve the color of a particular food product. The book includes two new chapters that highlight the physical and biological fundamentals of color, as well as the specific use of curcumin and carthamin. Sections focus on specific industrial applications of natural colorants, with chapters covering the use of natural colorants in a variety of products. Other sections highlight technical formulation and potential health benefits of specific colorants. Various pigments which can be used to effectively color food and beverage commodities are presented with information on safety and testing throughout. Provides a fully revised and updated resource on current regulatory standards and legislation Includes new chapters on both emerging ingredients and the latest technologies Focuses on the use of natural food colorants by specific product category per chapter rather than one pigment class per chapter Contains a current and comprehensive overview of product-specific coloration approaches

Download or read book Encyclopedia of Color Science and Technology written by Renzo Shamey and published by Springer Nature. This book was released on 2023-09-29 with total page 1634 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fully revised and expanded 2nd edition provides a single authoritative resource describing the concepts of color and the application of color science across research and industry. Significant changes for the 2nd edition include: New and expanded sections on color engineering More entries on fundamental concepts of color science and color terms Many additional entries on specific materials Further material on optical concepts and human visual perception Additional articles on organisations, tools and systems relevant to color A new set of entries on 3D presentation of color In addition, many of the existing entries have been revised and updated to ensure that the content of the encyclopedia is current and represents the state of the art. The work covers the full gamut of color: the fundamentals of color science; the physics and chemistry; color as it relates to optical phenomena and the human visual system; and colorants and materials. The measurement of color is described through entries on colorimetry, color spaces, color difference metrics, color appearance models, color order systems and cognitive color. The encyclopedia also has extensive coverage of applications throughout industry, including color imaging, color capture, display and printing, and descriptions of color encodings, color management, processing color and applications relating to color synthesis for computer graphics are included. The broad scope of the work is illustrated through entries on color in art conservation, color and architecture, color and education, color and culture, and biographies of some of the key figures involved in color research throughout history. With over 250 entries from color science researchers across academia and industry, this expanded 2nd edition of the Encyclopedia of Color Science and Technology remains the most important single resource in color science.

Download or read book Near Infrared Dyes for High Technology Applications written by S. Daehne and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the results of the NATO Advanced Research Workshop on "Syntheses, Optical Properties, and Applications of Near-Infrared (NIR) Dyes in High Technology Fields" held at Trest (Czech Republic) from September 24 to 27, 1997. It was attended by 52 scientists from 16 countries, among them 18 participants from 8 Eastern-Europe. The Workshop has been stimulated by the great progress that has been made in utilizing NIR dyes in high technology areas. This has been triggered by the availability of reliable. vel)' small, and inexpensive laser diodes emitting in the NIR region which raise the analytical detection limits by several orders of magnitude, allow time-resolved measurements for temporal discrimination between spectrally similar species, and make possible miniaturization as well as remote sensing through space and by fiber optical techniques. Furthermore, NIR dyes proved to be vel)' important in other high technology fields such as laser physics, optical recording techniques, nonlinear optics, biochemistty and medicine.

Download or read book Computer Aided Innovation of New Materials written by J. Kihara and published by Elsevier. This book was released on 2012-12-02 with total page 1009 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together the experience of specialists in the entire field of applications of Materials Science. The volume contains 196 of the excellent papers presented at the conference. This multidisciplinary meeting was held to bring together workers in a wide range of materials science and engineering activities who employ common analytical and experimental methods in their day to day work. The results of the meeting are of worldwide interest, and will help to stimulate future research and analysis in this area.

Download or read book New Frontiers in Nanochemistry Concepts Theories and Trends written by Mihai V. Putz and published by CRC Press. This book was released on 2020-05-06 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: The final volume of this new innovative and informative three-volume set explains and explores the essential basic and advanced concepts from various areas within the nanosciences. This volume primarily focuses on increasing awareness of sustainable nanochemistry, meaning the social and economic impact of nanochemistry, in order to mitigate ecological resource depletion and to promote the exploration of nature as a resource for future benefits. This volume adopts a pharmacological lens, examining the multitude of ways in which nano-research can contribute to the development of pharmaceutical drugs and paying particular attention to toxicology and renewable energy within nanochemistry. Under the vast expertise of the editor, the volume contains 34 entries contributed by renowned international scientists and scholars. The content in this volume covers topics such as anti-HIV agents, ecotoxicology, solar cells and photovoltaic phenomena, spectral-SAR, and more—alphabetically organized and accompanied by equations, figures, and brief letters in order to emphasize the potential applications of the concepts discussed.

Download or read book Infrared Absorbing Dyes written by Masaru Matsuoka and published by Springer Science & Business Media. This book was released on 1990-12-31 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: New laser technology has developed a new dye chemistry! Development of the gallium-arsenic semiconductor laser (diode laser) that emits laser light at 780-830 nm has made possible development of new opto-electronic systems including laser optical recording systems, thermal writing display systems, laser printing systems, and so on. Medical applications of lasers in photodynamic therapy for the treatment of cancer were also developed. In such systems, the infrared absorbing dyes OR dyes) are currently used as effective photoreceivers for diode lasers, and will become the key materials in high technology. At the present time the chemistry of IR dyes is the most important and interesting field in dye chemistry. Laser light can be highly monochromatic, very well collimated, coher ent, and, in some cases, extremely powerful. These characteristics make diode lasers a very cheap, convenient, and useful light source for a variety of applications in science and technology. For these purposes, however, IR dyes with special characteristics are required. To develop new IR dyes, it is most important to establish the correlation between the chemical structures of dyes and other characteristics of dyes, such as their absorption spectra. Molecular design of IR dyes predicting the Amax and Emax values by molecular orbital (MO) calculations is now possible even by using a personal computer, and many types of new IR dyes have been demonstrated. Also, new opto-electronic systems using IR dyes as photoreceivers have been reported recently.

Download or read book Colour Chemistry written by R. M. Christie and published by Royal Society of Chemistry. This book was released on 2001 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an up-to-date insight into the chemistry behind the colour of the dyes and pigments that make our world so colourful. The impressive breadth of coverage starts with a dip into the history of colour science. Colour Chemistry then goes on to look at the structure and synthesis of the various dyes and pigments, along with their applications in the traditional areas of textiles, coatings and plastics, and also the ever-expanding range of "high-tech" applications. Also discussed are some of the environmental issues associated with the manufacture and use of colour. The broad and balanced coverage presented in this book makes it ideal for students and graduates. In addition, many specialists in industry or academia will also benefit from the overview of the subject that is provided.

Download or read book Dye Lasers written by F.P. Schäfer and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: VI spectrum of potential applications is outlined by T. W. HANSCH, who also touches briefly on the exciting field of laser spectroscopy, a most important application to which a forthcoming volume is devoted. The treatment, being tutorial in nature, is suitable both for graduate students and for scientists working in the dye-laser field or applying a dye laser in another research discipline. The book will also prove to be an indispensable and handy source of information for the specialist. The literature is reviewed up to spring 1973, and the list of additional references (which cites the titles of articles) extends to summer 1973. This is proof of an amazingly short publication period for a 300-page book. Heidelberg, October 1973 HELMUT K. V. LOTSCH Contents 1. Principles of Dye Laser Operation. By FRITZ P. SCHAFER (with 53 Figures) Historical . . . . . . . . . . . . . . . . 1 Organization of the Book . . . . . . . . . 5 1. 1. General Properties of Organic Compounds 6 1. 2. Light Absorption by Organic Dyes 9 1. 3. Deactivation Pathways for Excited Molecules 28 1. 4. Laser-Pumped Dye Lasers . . . . . . 32 1. 4. 1. Oscillation Condition . . . . . 32 1. 4. 2. Practical Pumping Arrangements 37 1. 4. 3. Time Behavior and Spectra 44 1. 5. Flashlamp-Pumped Dye Lasers 54 1. 5. 1. Triplet Influence . . . . 54 1. 5. 2. Practical Pumping Arrangements 60 1. 5. 3. Time Behavior and Spectra 64 1. 6. Wavelength-Selective Resonators for Dye Lasers 66 1. 7. Dye-Laser Amplifiers 79 1. 8. Outlook . . . . . . . . . . . . . . . . . 83 2. Continuous-Wave Dye Lasers. By B. B.

Download or read book Industrial Organic Pigments written by Willy Herbst and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Everything there is to know about organic pigments' Revised and updated, this highly acclaimed work, now in its third edition, remains the most comprehensive source of information available on synthetic organic pigments. The book provides up-to-date information on synthesis, reaction mechanisms, physical and chemical properties, test methods, and applications of all industrially produced organic pigments of the world market. Standardized methods have been used to obtain the data thus facilitating comparison between pigments. Chemists, engineers, colorists, and technicians are sure to find this book invaluable. 'Presentation throughout is of the highest quality and the volume must now become the standard reference text in this important area of colouring matters.' Dyes and Pigments 'This is a very wide-ranging reference work ... it would be difficult to find a topic in this field not covered by this book.' Ecochem

Download or read book Aqueous Polymeric Coatings for Pharmaceutical Dosage Forms Third Edition written by Linda A. Felton and published by CRC Press. This book was released on 2008-01-09 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thoroughly updated and expanded, this new Third Edition provides the latest information on dosage, forms, film defects, and polymer characterization. Written by renowned leaders in the field, Aqueous Polymeric Coatings for Pharmaceutical Dosage Forms is easily the most comprehensive book available on the market today. New to the Third Edition: the interaction of drugs with functional polymers the influence of processing parameters on coating quality the stabilization of polymeric film coats plasticizers and their applications in pharmaceutical coatings adhesion of polymeric films to solid substrates basic properties of latex and pseudolatex colloidal dispersions Key topics included: polymer interactions with drugs and excipients physical aging of polymeric films a complete overview and in-depth analysis of recent advances in the field, which includes information on the latest equipment used to apply polymers to a pharmaceutical system illustrated examples explaining the appropriate steps to be taken in order to solve formulation, processing, and stability problems to achieve an optimized dosage form

Download or read book Advances in Dye Degradation written by Paulpandian Muthu Mareeswaran, Jegathalaprathaban Rajesh and published by Bentham Science Publishers. This book was released on 2023-12-20 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series provides information on the nature of dyes, their harmful effects, and dye degrading techniques. The first volume of this series presents a fundamental concept of dye degradation. The information on target-oriented dye mitigation is intended to give readers a better understanding of the dye degradation process to sustain a healthy environment. Chapters present referenced information and highlight novel breakthroughs in the industry. Key topics: Foundations of Dye Knowledge: Evaluating Toxicity Nanotechnology Electrochemistry Catalytic Materials and Photocatalysis Microbial Biodegradation This book serves as a foundational resource for researchers and students in chemistry and chemical engineering courses. It also serves as a reference for industry professionals who work with chemical dyes (for example in textile and plastic industries) and are engaged in the critical field of environmental remediation. Readership Scholars in chemistry and chemical engineering; professionals in manufacturing industries and environmental sustainability. Series Intro This series provides information on the nature of dyes, their harmful effects, and dye degrading techniques. Each volume will bring a collection of edited topics on dye degradation. The goal of the series is to provide readers with detailed knowledge about dye degradation. The editors also aim to give a broad perspective on the role of dye remediation technologies in creating a sustainable environment.

Download or read book Green Chemistry for Dyes Removal from Waste Water written by Sanjay K. Sharma and published by John Wiley & Sons. This book was released on 2015-03-04 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of synthetic chemical dyes in various industrialprocesses, including paper and pulp manufacturing, plastics, dyeingof cloth, leather treatment and printing, has increasedconsiderably over the last few years, resulting in the release ofdye-containing industrial effluents into the soil and aquatic ecosystems. The textile industry generates high-pollutingwastewaters and their treatment is a very serious problem due tohigh total dissolved solids (TDS), presence of toxic heavy metals,and the non-biodegradable nature of the dyestuffs in theeffluent. The chapters in this book provide an overview of the problem andits solution from different angles. These problems and solutionsare presented in a genuinely holistic way by world-renownedresearchers. Discussed are various promising techniques to removedyes, including the use of nanotechnology, ultrasound, microwave,catalysts, biosorption, enzymatic treatments, advanced oxidationprocesses, etc., all of which are “green.” Green Chemistry for Dyes Removal from Wastewatercomprehensively discusses: Different types of dyes, their working and methodologies andvarious physical, chemical and biological treatment methodsemployed Application of advanced oxidation processes (AOPs) in dyeremoval whereby highly reactive hydroxyl radicals are generatedchemically, photochemically and/or by radiolytic/ sonolytic means.The potential of ultrasound as an AOP is discussed as well. Nanotechnology in the treatment of dye removal types ofadsorbents for removal of toxic pollutants from aquaticsystems Photocatalytic oxidation process for dye degradation under bothUV and visible light, application of solar light and solarphotoreactor in dye degradation

Download or read book Aqueous Polymeric Coatings for Pharmaceutical Dosage Forms written by Linda A. Felton and published by CRC Press. This book was released on 2016-09-19 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aqueous-based film coating has become routine in the pharmaceutical industry. This process eliminates the use of organic solvents and thus avoids economic, environmental, and toxicological issues related to residual solvents and solvent recovery. Aqueous-based coating, however, is complex and many variables may impact the final product and its performance. This fourth edition of Aqueous Polymeric Coatings for Pharmaceutical Dosage Forms aims to provide insight into the factors and parameters that should be considered and controlled for the successful development and commercialization of a coated product. The fourth edition has been revised and expanded to reflect the most recent scientific advancements from the literature. The contributing authors explain in detail, using illustrated examples, appropriate steps to solve and ideally avoid formulation, processing, and stability problems and to achieve an optimized dosage form. Trade names and chemical names of commercially marketed coatings are used throughout the text to help familiarize the reader with the various materials available for pharmaceutical applications. This book will be a valuable resource for anyone in the pharmaceutical industry working in the area of aqueous-based film coating.