Photochemistry of Macromolecules

Photochemistry of Macromolecules PDF Author: R. F. Reinisch
Publisher: Springer Science & Business Media
ISBN: 1468480359
Category : Technology & Engineering
Languages : en
Pages : 229

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Book Description
Our knowledge of the photodegradation of polymers, chemical evolution, photosynthesis, visual perception and the biological effects of light depends heavily on our ability to elucidate the primary photochemical processes of macromolecules. This volume brings together for the first time from the fields of natural as well as synthetic polymers a group of reports dealing with macromolecular photochemistry. Since macromolecular photo chemistry is an expanding new field that crosses the boundaries between classical disciplines, the reader will encounter the employment of diverse scientific approaches and unfamiliar terminology. However, it has become increasingly apparent that researchers in these fields have much to learn from each other. Although this book is not intended to give a detailed survey of the photochemistry of macromolecules. it does represent the editor's perspective on the relationship between theory, kinetic studies and the synthesis aspects of photochemistry. The ideas expressed by the contributors offer a valuable com posite of theoretical and experimental approaches for those who are concerned with problems which have photochemical relevance, and show that investigators from different fields share many concepts and perhaps some common problems. This novel array of present knowledge should provide a basis for organizing and understanding photochemical information from chemistry, physics, biology and medicine. While of particular value to the research worker, the book also should be of interest to the graduate student about to embark on a problem in macromolecular photo chemistry.

Photochemistry of Macromolecules

Photochemistry of Macromolecules PDF Author: R. F. Reinisch
Publisher: Springer Science & Business Media
ISBN: 1468480359
Category : Technology & Engineering
Languages : en
Pages : 229

Get Book Here

Book Description
Our knowledge of the photodegradation of polymers, chemical evolution, photosynthesis, visual perception and the biological effects of light depends heavily on our ability to elucidate the primary photochemical processes of macromolecules. This volume brings together for the first time from the fields of natural as well as synthetic polymers a group of reports dealing with macromolecular photochemistry. Since macromolecular photo chemistry is an expanding new field that crosses the boundaries between classical disciplines, the reader will encounter the employment of diverse scientific approaches and unfamiliar terminology. However, it has become increasingly apparent that researchers in these fields have much to learn from each other. Although this book is not intended to give a detailed survey of the photochemistry of macromolecules. it does represent the editor's perspective on the relationship between theory, kinetic studies and the synthesis aspects of photochemistry. The ideas expressed by the contributors offer a valuable com posite of theoretical and experimental approaches for those who are concerned with problems which have photochemical relevance, and show that investigators from different fields share many concepts and perhaps some common problems. This novel array of present knowledge should provide a basis for organizing and understanding photochemical information from chemistry, physics, biology and medicine. While of particular value to the research worker, the book also should be of interest to the graduate student about to embark on a problem in macromolecular photo chemistry.

Photochemistry of Proteins and Nucleic Acids

Photochemistry of Proteins and Nucleic Acids PDF Author: A. D. McLaren
Publisher: Elsevier
ISBN: 1483136035
Category : Science
Languages : en
Pages : 470

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Book Description
Photochemistry of Proteins and Nucleic Acids focuses on the effects of ultraviolet and visible radiations on proteins and nucleic acids. The book first discusses some principles of photochemistry, including the laws of photochemistry and factors influencing photochemical reactions in solutions. The text describes absorption and luminescence spectra of nucleoproteins and their components, including principal absorbing groups in proteins, nucleic acids, and nucleoproteins. The selection also highlights the action of ultraviolet light on proteins; photochemical and photosensitized inactivation of enzymes; and the photochemistry of purine and pyrimidine derivatives. The text also discusses nucleic acids and oligo- and polynucleotides. Topics include photochemical degradation of nucleic acid; kinetics of biological inactivation of nucleic acids; nucleoproteins; and reversibility of nucleic acid photolysis. The book also encompasses the inactivation of viruses, including inactivation studies with a plant virus, bacteriophages, and photochemically produced vaccines. The text also presents some problems in photobiology and some techniques in photochemistry. The text is a good source of information for readers interested in the study of proteins and nucleic acids.Based on the standards and codes from Fo

Photochemistry and Photobiology of Nucleic Acids

Photochemistry and Photobiology of Nucleic Acids PDF Author: Shih Yi Wang
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 626

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Book Description
Photochemistry and Photobiology of Nucleic Acids, Volume I: Chemistry covers the historical developments in the study of photobiology and photochemistry of nucleic acid components. This volume is divided into 12 chapters that deal with the isolation and characterization of ultraviolet photoproducts of pyrimidines. After briefly covering the concepts of photochemistry of nucleic acids, this volume goes on describing the UV-induced physical and chemical alterations in nucleic acid components, such as pyrimidines, purines, their nucleosides and nucleotides, and related compounds. Significant chap ...

Photochemistry

Photochemistry PDF Author: Oliver Schalk
Publisher: American Chemical Society
ISBN: 0841299072
Category : Science
Languages : en
Pages : 201

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Book Description
Photochemistry is an important part of both chemistry and biology and is of great practical significance for the development of sustainable sources of energy. The mechanisms of photochemistry are far from trivial and far from understood. There are limits to how well theory can describe the processes and how well experiments can resolve them. This book aims to provide an overview of state-of-the-art methods for both theoretical development and experimental techniques, with a focus on ultrafast molecular processes and electronic excitation of organic molecules. These fields are active and progress is being made, carried by the increasing speed of computation and the development of new light sources, most notably X-ray sources at large facilities. Alongside these two layers of theoretical development and experimental techniques is a third layer—model building. In this layer, model building tries to find similarities in seemingly unrelated experimental results and deepen our general knowledge of photoinduced processes. Often, progress is made not by cutting-edge techniques but rather by using well-established techniques with a great variety of molecules—this approach promises less glory but is just as important as the first two layers. Examples mentioned in the text are the Woodward–Hoffman rules and the dynamophore concept. All three layers are crucial to push our knowledge further and, eventually, to use it for developing new and more advanced optical devices.

Polymer Photophysics

Polymer Photophysics PDF Author: D. Phillips
Publisher: Springer
ISBN: 9780412165108
Category : Science
Languages : en
Pages : 438

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Book Description


Photochemistry of Organic Molecules in Isotropic and Anisotropic Media

Photochemistry of Organic Molecules in Isotropic and Anisotropic Media PDF Author: V. Ramamurthy
Publisher: CRC Press
ISBN: 0203014200
Category : Science
Languages : en
Pages : 428

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Book Description
This text discusses di-p-methane rearrangements via radical-cation intermediates, the photo-Fries rearrangement in organized media and of biologically active compounds, electron transfer leading to fragmentation, dimerization, and nucleophilic capture, and the characterization and reactivity of photochemically generated phenylene bis(diradical) spe

Introduction to Organic Photochemistry

Introduction to Organic Photochemistry PDF Author: J. D. Coyle
Publisher: John Wiley & Sons
ISBN: 9780471909750
Category : Science
Languages : en
Pages : 192

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Book Description
Introduction to Organic Photochemistry John D. Coyle, The Open University, Milton Keynes The purpose of this book is to provide an introductory account of the major types of organic photochemical reactions, to enable those with a prior knowledge of basic organic chemistry to appreciate the differences between processes which occur photochemically (through an electronically excited state) and those that occur thermally (directly from the electronic ground state). The material is organized according to organic functional groups, in parallel with the approach adopted in most general textbooks on organic chemistry. In this respect it differs from many of the existing, older organic photochemistry texts. The first chapter provides an account of the distinctive features of photochemical reactions, and a physical/mechanistic framework for the descriptions in the rest of the book. The overall emphasis is on organic photoreactions potentially useful in synthesis. The book thus integrates this branch of chemistry with broader aspects of the subject, and introduces the reader to important applications of organic photochemistry.

Photochemistry – 6

Photochemistry – 6 PDF Author: A. Gilbert
Publisher: Elsevier
ISBN: 1483156230
Category : Science
Languages : en
Pages : 183

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Book Description
Photochemistry — 6 is a collection of plenary lectures presented at the Sixth International Symposium on Photochemistry held in Aix-en-Provence, France, on July 19-23, 1976. Contributors focus on the photochemistry of a variety of compounds and substances, including bichromophoric compounds, heterocycles, and metal carbonyls. The results of photochemical studies of visual pigments are also presented. This book is comprised of 14 chapters and opens with a review of the state of the art of ab initio quantum-mechanical calculations for polyatomic molecules, with particular reference to predictions of interest to photochemists. The major areas discussed are spectral predictions, substituent effects on energy gaps, and potential energy surfaces. The following chapters explore energy transfer and molecular mobility in polymer photochemistry; the photochemistry of polyenes and aromatic-N-ylides; cis-trans isomerization in the photochemistry of vision; and aromatic aldehyde-leuco dye photoxidation. The electrochemical boundaries for the photochemistry of spectrally sensitized silver halide emulsions are also examined, along with the photochemistry of organic chromophores incorporated into fatty acid monolayers. This monograph will be of interest to chemists in general and photochemists in particular.

Photochemistry and Photophysics

Photochemistry and Photophysics PDF Author: Jan F. Rabek
Publisher: CRC Press
ISBN: 9780849340437
Category : Science
Languages : en
Pages : 224

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Book Description
Photochemistry and Photophysics is a multi-volume set that presents a critical review of new developments that have occurred in the inorganic, organic, atmospheric, environmental, material, bio-and polymer fields of photochemistry and photophysics over the last decade. Specific topics covered in Volume III include photochemical processes at semiconductors, photoluminescence probes of porous solids, photoluminescence probes of polymer structures, and photomodification of cell membranes. Topics covered in Volume IV include magnetic fields in photochemistry, heterogenous photocatalysis by semiconductor powders, hydrophobic and hydrophyllic effects on photochemical and photophysical processes, and photoinitiators for free radical polymerization. The book provides essential information for students and researchers in photochemistry and photophysics.

Supramolecular Photochemistry

Supramolecular Photochemistry PDF Author: V. Ramamurthy
Publisher: John Wiley & Sons
ISBN: 1118095294
Category : Science
Languages : en
Pages : 511

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Book Description
This is the most updated, comprehensive collection of monographs on all aspects of photochemistry and photophysics related to natural and synthetic, inorganic, organic, and biological supramolecular systems. Supramolecular Photochemistry: Controlling Photochemical Processes addresses reactions in crystals, organized assemblies, monolayers, zeolites, clays, silica, micelles, polymers, dendrimers, organic hosts, supramolecular structures, organic glass, proteins and DNA, and applications of photosystems in confined media. This landmark publication describes the past, present, and future of this growing interdisciplinary area.