Crown Ethers And Analogous Compounds
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Crown Ethers And Analogous Compounds
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Author : M. Hiraoka
language : en
Publisher: Elsevier
Release Date : 2016-05-04
Crown Ethers And Analogous Compounds written by M. Hiraoka and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-05-04 with Science categories.
Since the discovery of crown ethers by Pedersen in 1967, several thousands of crown ethers and analogous compounds have been synthesized. Their specific characteristics have been investigated and a variety of applications developed. These developments have led to new fields of chemistry called host-guest chemistry and supramolecular chemistry. This book presents the state-of-the-art of the chemistry of crown ethers and analogous compounds. The first chapter provides an orientation in the new fields of chemistry. Chapter 2 reviews advances in synthetic procedures for crown ethers and analogous compounds including azacrown ethers, thiacrown ethers, functionalized crown ethers, cryptands and others. The focus of chapter 3 is on the concept and synthetic strategies for the molecular design of new crown compounds. Chapters 4-7 are concerned with noteworthy topics in the applications of crown compounds. Chapter 4 deals with the application to ion-selective electrodes and liquid chromatography, both of which are the most important targets in the analytical application of crown compounds. One major application of crown ethers is the design and syntheses of artificial molecules which can catalyze a useful synthetic reaction in an enzyme-mimetic reaction manner, through novel non-covalent complexes. The strategies for enzymatic modelling with crown ethers are covered in chapter 5, while chapter 6 presents the principle of amine-selective colour complexation and its application. In chapter 7 switched-on crown ethers that can respond to environmental stimuli are reviewed. The final chapter is devoted to a wide-ranging discussion of developments in macrocyclic polyamine chemistry. Unlike crown ethers, macrocyclic polyamines, bearing nitrogen donor atoms which belong to a soft base, form complexes with ions of transition metals and heavy metals which are classified as soft acids. Therefore, macrocyclic polyamines are expected to have very versatile applications. Scientists in chemistry, biochemistry, physical organic chemistry, pharmaceutical chemistry and industrial chemistry will find this book a helpful summary and a stimulating contribution to research in this specialized field of crown compounds.
Phosphazenes
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Author : Mario Gleria
language : en
Publisher: Nova Publishers
Release Date : 2004
Phosphazenes written by Mario Gleria and has been published by Nova Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Science categories.
The main aim of this book is to provide a complete picture of current research on phosphazene compounds carried out around the world. The book opens with a general introduction, then moves on to cover synthetic aspects of phosphazene polymers, their characterization in solution and from the theoretical, thermal, and mechanical points of view; application aspects of poly(organophosphazenes); and the synthesis, characterization, and practical utilization of cyclophosphazenes. There is particular focus on the use of cyclophosphazenes as hydraulic fluids and additives, as cores for star polymers or dendrimers, and as starting substrates for supramolecular chemistry and nanostructured materials. The spectroscopic characterization of these compounds by NMR and Raman techniques is also discussed. Annotation : 2004 Book News, Inc., Portland, OR (booknews.com).
Organic Chemistry In Action
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Author : F. Serratosa
language : en
Publisher: Elsevier
Release Date : 1996-05-09
Organic Chemistry In Action written by F. Serratosa and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-05-09 with Science categories.
The first edition of this book was welcomed with great enthusiasm by teachers and students. It therefore seemed opportune to publish a second, revised, updated and extended edition. Unfortunately, Professor Fèlix Serratosa died before he could complete this task. Some new material has been added, the more significant changes being:. The book has been restructured into two well-differentiated sections: Part A, dealing with conventional organic synthesis, and Part B, devoted exclusively to computer-assisted organic synthesis and based on the former Chapter 11 and Appendices 2, 3 and 4 of the first edition. As decided in advance, Part B was to be the sole responsibility of Dr. Josep Xicart, who prepared the first versions of the CHAOS (Computerisation and Heuristics Applied to Organic Synthesis) program under the direction of Professor Serratosa.
New Frontiers In Screening For Microbial Biocatalysts
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Author : K. Kieslich
language : en
Publisher: Elsevier
Release Date : 1997-12-09
New Frontiers In Screening For Microbial Biocatalysts written by K. Kieslich and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-12-09 with Technology & Engineering categories.
With screening and selection of biocatalysts being undervalued in Europe in comparison with USA and especially Japan, the working parties "Applied Biocatalysis" and "Microbial Physiology" of the European Federation of Biotechnology decided to organise an international symposium entitled "New Frontiers in Screening for Microbial Biocatalysts".Novel screening techniques, microbial biodiversity, microbial physiology and molecular genetics were discussed to give better insights into possibilities and limitations of obtaining biocatalysts from nature.These proceedings provide a comprehensive overview of the present state-of-the-art in the field of biocatalysts screening.
Stability And Stabilization Of Enzymes
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Author : W.J.J. van den Tweel
language : en
Publisher: Elsevier
Release Date : 2013-10-22
Stability And Stabilization Of Enzymes written by W.J.J. van den Tweel and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Technology & Engineering categories.
These proceedings contain most of the oral presentations and posters of the international symposium on Stability and Stabilization of Enzymes held in Maastricht in November 1992. They provide a comprehensive overview of the state-of-the-art in this field.The possible applications of enzymes are enormous. Years of development have seen many enzymes brought onto the market, but they are still expensive to use. Therefore, their efficient application is a prerequisite for common usage. One of the main factors for this efficiency is the stability of the enzymes. The topics thus ranged from the extensive fundamental thermodynamic knowledge gathered in academic research to the practical applied knowledge built up in industry during the time that enzymes have been produced commercially.The subject Stability and Stabilization of Enzymes was discussed from various points of view, as was reflected in the themes of the symposium sessions. In the session on Fundamentals of Enzyme Stabilisation the thermodynamic background of the phenomenon was highlighted. In yet another session, the recently developed analytical tools to measure enzyme stability and stabilisation were discussed. Further sessions comprised the physical, chemical and biological ways to obtain enzyme stabilisation and finally, the industrial practice of enzyme stabilisation was treated by representatives of the world's most important enzyme producers. The book will be of interest to researchers in universities and industry in the fields of biochemistry, enzymology and biotechnology.
Progress In Heterocyclic Chemistry
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Author : H. Suschitzky
language : en
Publisher: Elsevier
Release Date : 2013-10-22
Progress In Heterocyclic Chemistry written by H. Suschitzky and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Science categories.
Progress in Heterocyclic Chemistry Volume 5 deals critically with original material selected essentially from the 1992 heterocyclic literature. Chapters 1 and 2 are given over to reviews: in the first, SO2 extrusion from five-membered rings is discussed by R.A. Aitken and colleagues, which completes last year's review on this topic. The second review presents a review of 2-acylamino-3-dimethylaminopropenoates in heterocyclic synthesis. The chapters are arranged according to ring sizes as in the previous volumes and are supported by references, numerous diagrams and a subject index.
Metal Ions In Biological Systems
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Author : Astrid Sigel
language : en
Publisher: CRC Press
Release Date : 1996-02-29
Metal Ions In Biological Systems written by Astrid Sigel and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-02-29 with Science categories.
"Volume 33 focuses on the vibrant research area of probing nucleic acids--the carriers of the genetic code--by metal ion complexes of small molecules providing an authoritative, timely account of this fascinating topic by over 50 distinguished experts."
Colorants For Non Textile Applications
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Author : H.S. Freeman
language : en
Publisher: Elsevier
Release Date : 2000-05-03
Colorants For Non Textile Applications written by H.S. Freeman and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-05-03 with Technology & Engineering categories.
This volume examines the chemistry of natural and synthetic dyes produced for non-textile markets, where much new basic research in color chemistry is now taking place.The first group of chapters covers the design, synthesis, properties and application technology pertaining to dyes for digital printing and photography. The reader will be pleased with the breadth and depth of information presented in each case. Of particular interest is the discussion of strategies for the design of dyes in these categories, with emphasis on enhancing technical properties. In view of certain new developments, the ink-jet chapter includes results from studies pertaining to dyes for textiles.The three chapters comprising Section II of this volume cover the broad subject of dyes for food, drug and cosmetic applications and then provide an in-depth look at dyes for biomedical applications and molecular recognition. The chapter on dyes for molecular recognition places emphasis on applications in the biological sciences, including sensory materials and artificial receptors. While the former two topics have been covered elsewhere in the past, the present chapters are unequalled in scope.Section III provides an in-depth review of the design of laser dyes and dye-based functional materials. In the first of the two chapters, the major principles of laser operation are summarized. This is followed by a discussion of spectroscopic properties, such as activation and deactivation of absorbed light by laser dyes. Approaches to the development of new laser dyes are presented. The second chapter pertains to the synthesis of dicyanopyrazine-based multifunctional dyes. The visible and fluorescence spectra of these dyes in solution and the solid state are correlated with their three-dimensional molecular structures. Molecular stacking behavior and solid state properties of these "multifunctional" dye materials are presented.The final group of chapters pertains to natural dyes and dyes for natural substrates. In recent years, the impression among certain consumers that "natural" is better/safer has generated much interest in the use of natural dyes rather than synthetics. This has led to a few short discussion papers in which the environmental advantages to using natural dyes have been questioned. The initial chapter in this group provides both a historical look at natural dyes and a comprehensive compilation of natural dye structures and their sources. Though natural dyes are of interest as colorants for textiles, selected ones are used primarily in food and cosmetics.Chapter ten provides an update on the author's previous reviews of structure-color-relationships among precursors employed in the coloration of hair. Chemical constitutions characterizing hair dye structures are presented, along with a summary of available precursors and their environmental properties. Similarly, the chapter on leather dyes covers constitutions and nomenclature, in addition to providing interesting perspectives on the origin and use of leather, the dyeing of leather, and key environmental issues.This volume is concluded with another look at colors in nature. In this case, rather than revisiting colors in plant life, an interesting chapter dealing with color in the absence of colorants is presented. Chapter twelve covers basic concepts of color science and illustrates how 3-D assemblies leading to a plethora of colors are handled in nature. It is our hope that this atypical "color chemistry" chapter will invoke ideas that lead to the design of useful colorants.The chapters presented in this volume demonstrate that color chemistry still has much to offer individuals with inquiring minds who are searching for a career path. This work highlights the creativity of today's color chemists and the wide variety of interesting non-textile areas from which a career can be launched.
Advances In Supramolecular Chemistry
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Author : G.W. Gokel
language : en
Publisher: Elsevier
Release Date : 1997-09-22
Advances In Supramolecular Chemistry written by G.W. Gokel and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-09-22 with Science categories.
Part of a series which presents reports of efforts in all areas of supramolecular science, this volume discusses a variety of topics in the field.
Ion Exchange And Solvent Extraction
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Author : Jacob A. Marinsky
language : en
Publisher: CRC Press
Release Date : 2021-05-30
Ion Exchange And Solvent Extraction written by Jacob A. Marinsky and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-30 with Science categories.
"Volume 13 of this important series continues in the tradition of its widely received predecessors, presenting current advances and results in solvent extraction. Contains nearly 800 helpful drawings, tables, equations and bibliographic citations."