Author: Ellen C. Hayes Publisher: ISBN: Category : Languages : en Pages : 294
Book Description
In this dissertation, the fundamental concepts and techniques of electron paramagnetic resonance (EPR) spectroscopy, which are important for understanding electronic structure and relating it to geometric structure, are presented in Chapter 1. Following this are five chapters each dedicated to a separate topic where EPR spectroscopy was a central tool in studying the properties of biologically relevant systems. Chapter 2 focuses on the study of tryptophan radicals in small peptide systems. The studies aim to understand how microenvironment influences the electronic structure (through measuring magnetic and electrochemical properties) of these radicals. In Chapter 3, the identity of an unknown organic radical in the active site of the enzyme spore photoproduct lyase (SPL) is investigated. This radical is believed to be a part of a radical transfer chain involved in the repair of photodamaged DNA by the enzyme SPL. In Chapter 4, closely related to the topics of Chapter 3, the pathway of DNA photodamage by ultraviolet light is investigated. The damaged DNA is believed to form through a radical recombination process amenable to study with EPR spectroscopy. Chapter 5 discusses the magnetic properties of an intermediate formed during O-O bond activation and cleavage by a small molecule MnII compound. Results of EPR spectroscopy suggest the intermediate is a MnIIIMnIV dimer and aim to characterize the bridging motif and protonation state of the MnIIIMnIV dimer. Finally, Chapter 6 presents a study of a small molecule CuII-alkoxide compound relevant for understanding CuII mediated alcohol oxidations (which occur in enzymes such as galactose oxidase). A detailed electronic structure characterization was carried out by using single-crystal EPR spectroscopy in tandem with magnetic circular dichroism spectroscopy, resonance Raman spectroscopy, and density functional theory calculations.
Author: Gertz Likhtenshtein Publisher: Springer ISBN: 3319339273 Category : Science Languages : en Pages : 355
Book Description
This book presents the versatile and pivotal role of electron spin interactions in nature. It provides the background, methodologies and tools for basic areas related to spin interactions, such as spin chemistry and biology, electron transfer, light energy conversion, photochemistry, radical reactions, magneto-chemistry and magneto-biology. The book also includes an overview of designing advanced magnetic materials, optical and spintronic devices and photo catalysts. This monograph will be of interest to scientists and graduate students working in the areas related to spin interactions physics, biophysics, chemistry and chemical engineering.
Author: Chandran Karunakaran Publisher: Elsevier ISBN: 012813609X Category : Science Languages : en Pages : 380
Book Description
Spin Resonance Spectroscopy: Principles and Applications presents the principles, recent advancements and applications of nuclear magnetic resonance (NMR) and electron paramagnetic resonance (EPR) in a single multi-disciplinary reference. Spin resonance spectroscopic techniques through NMR and EPR are widely used by chemists, physicists, biologists and medicinal chemists. This book addresses the need for new spin resonance spectroscopy content while also presenting the principles, recent advancements and applications of NMR and EPR simultaneously. Ideal for researchers and students alike, the book provides a single source of NMR and EPR applications using a dynamic, holistic and multi-disciplinary approach. Presents a highly interdisciplinary approach by including NMR and EPR applications in chemistry, physics, biology and biotechnology Addresses both NMR and EPR, making its concepts and applications implementable in multiple resonance environments and core scientific disciplines Features a broad range of methods, examples and illustrations for both NMR and EPR to aid in retention and underscore key concepts
Author: Sergei A. Dikanov Publisher: CRC Press ISBN: 9780849342240 Category : Science Languages : en Pages : 432
Book Description
The first volume devoted entirely to Electron Spin Echo Envelope Modulation (ESEEM) Spectroscopy This valuable book provides an introduction and broad survey of topics in ESEEM spectroscopy, including the theory, instrumentation, peculiarities of ESE experiments, and analysis of experimental data with particular emphasis on orientationally disordered systems. Applications of ESEEM spectroscopy to study chemically and biologically important paramagnetic centers in single crystals, amorphous solids, and powders are discussed as well. Electron Spin Echo Envelope Modulation (ESEEM) Spectroscopy will benefit specialists in magnetic resonance spectroscopy, physicists, chemists, and biologists who use magnetic resonance in their research.
Author: Wilfred Raymond Hagen Publisher: CRC Press ISBN: 1420059580 Category : Medical Languages : en Pages : 264
Book Description
Comprehensive, Up-to-Date Coverage of Spectroscopy Theory and its Applications to Biological SystemsAlthough a multitude of books have been published about spectroscopy, most of them only occasionally refer to biological systems and the specific problems of biomolecular EPR (bioEPR). Biomolecular EPR Spectroscopy provides a practical introduction t
Author: Gareth R. Eaton Publisher: Springer Science & Business Media ISBN: 3211929487 Category : Science Languages : en Pages : 192
Book Description
There is a growing need in both industrial and academic research to obtain accurate quantitative results from continuous wave (CW) electron paramagnetic resonance (EPR) experiments. This book describes various sample-related, instrument-related and software-related aspects of obtaining quantitative results from EPR expe- ments. Some speci?c items to be discussed include: selection of a reference standard, resonator considerations (Q, B ,B ), power saturation, sample position- 1 m ing, and ?nally, the blending of all the factors together to provide a calculation model for obtaining an accurate spin concentration of a sample. This book might, at ?rst glance, appear to be a step back from some of the more advanced pulsed methods discussed in recent EPR texts, but actually quantitative “routine CW EPR” is a challenging technique, and requires a thorough understa- ing of the spectrometer and the spin system. Quantitation of CW EPR can be subdivided into two main categories: (1) intensity and (2) magnetic ?eld/mic- wave frequency measurement. Intensity is important for spin counting. Both re- tive intensity quantitation of EPR samples and their absolute spin concentration of samples are often of interest. This information is important for kinetics, mechanism elucidation, and commercial applications where EPR serves as a detection system for free radicals produced in an industrial process. It is also important for the study of magnetic properties. Magnetic ?eld/microwave frequency is important for g and nuclear hyper?ne coupling measurements that re?ect the electronic structure of the radicals or metal ions.
Author: Lawrence J. Berliner Publisher: Springer Nature ISBN: 303047318X Category : Science Languages : en Pages : 237
Book Description
This book describes the methods of analysis and determination of oxidants and oxidative stress in biological systems. Reviews and protocols on select methods of analysis of ROS, RNS, oxygen, redox status, and oxidative stress in biological systems are described in detail. It is an essential resource for both novices and experts in the field of oxidant and oxidative stress biology.
Author: Simonpietro Agnello Publisher: John Wiley & Sons ISBN: 1119697328 Category : Technology & Engineering Languages : en Pages : 500
Book Description
SPECTROSCOPY FOR MATERIALS CHARACTERIZATION Learn foundational and advanced spectroscopy techniques from leading researchers in physics, chemistry, surface science, and nanoscience In Spectroscopy for Materials Characterization, accomplished researcher Simonpietro Agnello delivers a practical and accessible compilation of various spectroscopy techniques taught and used to today. The book offers a wide-ranging approach taught by leading researchers working in physics, chemistry, surface science, and nanoscience. It is ideal for both new students and advanced researchers studying and working with spectroscopy. Topics such as confocal and two photon spectroscopy, as well as infrared absorption and Raman and micro-Raman spectroscopy, are discussed, as are thermally stimulated luminescence and spectroscopic studies of radiation effects on optical materials. Each chapter includes a basic introduction to the theory necessary to understand a specific technique, details about the characteristic instrumental features and apparatuses used, including tips for the appropriate arrangement of a typical experiment, and a reproducible case study that shows the discussed techniques used in a real laboratory. Readers will benefit from the inclusion of: Complete and practical case studies at the conclusion of each chapter to highlight the concepts and techniques discussed in the material Citations of additional resources ideal for further study A thorough introduction to the basic aspects of radiation matter interaction in the visible-ultraviolet range and the fundamentals of absorption and emission A rigorous exploration of time resolved spectroscopy at the nanosecond and femtosecond intervals Perfect for Master and Ph.D. students and researchers in physics, chemistry, engineering, and biology, Spectroscopy for Materials Characterization will also earn a place in the libraries of materials science researchers and students seeking a one-stop reference to basic and advanced spectroscopy techniques.
Author: A.J. Hoff Publisher: Elsevier ISBN: 0080933874 Category : Science Languages : en Pages : 943
Book Description
Advanced EPR: Applications in Biology and Biochemistry provides an up-to-date survey of existing EPR techniques and their applications in biology and biochemistry, and also provides a wealth of ideas for future developments in instrumentation and theory. The material is broadly organized into four parts. In the first part (chapters 1 to 6) pulsed EPR is discussed in detail. The second part (chapters 7 to 12) provides detailed discussions of a number of novel and experimental methods. The third part comprises seven chapters on double-resonance techniques, five on ENDOR and two on optically- and reaction yield-detected resonance. The final part is devoted to a thorough discussion of a number of new developments in the application of EPR to various biological and biochemical problems. Advanced EPR will interest biophysicists, physical biochemists, EPR spectroscopists and others who will value the extensive treatment of pulsed EPR techniques, the discussion of new developments in EPR instrumentation, and the integration of theory and experimental details as applied to problems in biology and biochemistry.
Author: Marcus A. Hemminga Publisher: Springer Science & Business Media ISBN: 0387250662 Category : Medical Languages : en Pages : 346
Book Description
Starting from a comprehensive quantum mechanical description, this book introduces the optical (IR, Raman, UV/Vis, CD, fluorescence and laser spectroscopy) and magnetic resonance (1D and 2D-NMR, ESR) techniques. The book offers a timely review of the increasing interest in using spin-label ESR as an alternative structural technique for NMR or X-ray diffraction. Future aspects are treated as well, but only as an illustration of the progress of ESR in this field.
Author: Ellen C. Hayes
Author: Gertz Likhtenshtein
Author: Chandran Karunakaran
Author: Sergei A. Dikanov
Author: Wilfred Raymond Hagen
Author: Gareth R. Eaton
Author: Lawrence J. Berliner
Author: Simonpietro Agnello
Author: A.J. Hoff
Author: Marcus A. Hemminga