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Library | Item Barcode | Call Number | Material Type | Item Category 1 | Status |
|---|---|---|---|---|---|
Searching... | 30000003090192 | QC763.W44 1994 | Open Access Book | Book | Searching... |
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Summary
Summary
Focusing primarily on isolated paramagnetic species, Electron Paramagnetic Resonance is designed to provide senior undergraduate and graduate students as well as professionals with the essential understanding needed to use this technique and be active in various specialized fields of interest.
Electron Paramagnetic Resonance enables those with no previous background in quantum mechanics to gain a fundamental grasp of EPR. It helps those with moderate training to acquire more sophisticated mathematical and quantum-mechanical skills and a knowledge of powerful theoretical and experimental techniques--tools that will allow them to interpret a wide range of EPR spectra.
This important work also introduces many exciting new EPR developments in progress, including time-resolved spectroscopy, which involves the acquisition of EPR data for short-lived species. In addition, it highlights the increasing complexity of the experimental equipment currently used, including spectrometers that operate both in the classical continuous-wave mode and in pulsed mode. This book also discusses how computers can direct spectrometer control and data acquisition, analyze data to yield to underlying parameters, and produce accurate simulated spectra.
Readers will acquire a heightened historical appreciation of the EPR technique, discovering how EPR studies have:
confirmed the existence of triplet states, establishing that new adsorption bands observed in optical spectra following excitation by light of certain molecules arise from the unpairing of electron spins identified chlorophyll radicals as the primary donor in the photosynthesis process, as well as other key intermediates in this reaction clarified the structure and function of systems of biomedical interest, including oxygen carriers and various enzymes uncovered paramagnetic species in insulators and semiconductors and described their environment facilitated chemists' investigation of reaction mechanismsComplete with problem sets and concise bibliographies at the end of each chapter, as well as tutorial mathematical and quantum-mechanical appendices, this book is must reading for aspiring scientists in the field of physical chemistry and spectroscopy.
Using this book, you will be able to gain a fundamental grasp of EPR--even if you have no previous background in quantum mechanics. This important work also helps those with some training to acquire more sophisticated mathematical and quantum-mechanical skills and a knowledge of powerful theoretical and experimental techniques--tools that will allow them to interpret a wide range of EPR spectra.
You'll find out about many exciting new EPR developments in progress, including time-resolved spectroscopy, which involves the acquisition of EPR data for short-lived species. This book also discusses computers that direct spectrometer control and data acquisition, analyze data to yield to underlying parameters and produce accurate simulated spectra.
Complete with problem sets and concise bibliographies at the end of each chapter, this book is must reading for aspiring scientists in the field of physical chemistry and spectroscopy.
Author Notes
John A. Weil is professor Emeritus of Chemistry and Physics at the University of Saskatchewan
James R. Bolton is Adjunct Professor in the Department of Civil and Environmental Engineering at the University of Alberta, and Professor Emeritus of Chemistry at the University of Western Ontario
Reviews 1
Choice Review
Weil, Bolton, and Wertz provide all the basic background for an advanced student or professional using electron paramagnetic resonance (EPR) characterization techniques. Yet, the book goes far beyond a primary introduction to EPR. "Hyperfine" structures in the spectra are discussed in great detail and the latest experimental techniques (e.g., time-resolved EPR) are described. Quantum mechanical principles are applied frequently throughout and for readers who do not have a profound understanding of these techniques, the attached appendixes (about 150 pages) will provide the necessary information. The authors discuss every topic in great detail and always provide the basic underlying physical and theoretical principles. Each chapter is followed by a concise list of further readings as well as a list of special notes and a set of problem-questions. Despite the complexity of the subject, the book is very well written, illustrated, and produced. Recommended for faculty, professionals, or graduate students. H. Giesche; Alfred University
Table of Contents
| Preface |
| Acknowledgments |
| 1 Basic Principles Of Paramagnetic Resonance |
| 1.1 Introduction |
| 1.2 Historical Perspective |
| 1.3 A Simple EPR Spectrometer |
| 1.4 Scope of the EPR Technique |
| 1.5 Energy Flow in Paramagnetic Systems |
| 1.6 Quantization of Angular Momenta |
| 1.7 Relation Between Magnetic Moments and Angular Momenta |
| 1.8 Magnetic Field Quantities and Units |
| 1.9 Bulk Magnetic Properties |
| 1.10 Magnetic Energies and States |
| 1.11 Interaction of Magnetic Dipoles with Electromagnetic Radiation |
| 1.12 Characteristics of the Spin Systems |
| 1.13 Parallel-Field EPR |
| 1.14 Time-Resolved EPR |
| 1.15 Computerology |
| 1.16 EPR Imaging |
| References |
| Notes |
| Further Reading |
| Problems |
| 2 Magnetic Interaction Between Particles |
| 2.1 Introduction |
| 2.2 Theoretical Considerations of the Hyperfine Interaction |
| 2.3 Angular-Momentum and Energy Operators |
| 2.4 Energy Levels of a System with One Unpaired Electron and One Nucleus with I = ½ |
| 2.5 Energy Levels of a System with S = ½ and I = 1 |
| 2.6 Signs of Isotropic Hyperfine Coupling Constants |
| 2.7 Dipolar Interactions Between Electrons |
| References |
| Notes |
| Further Reading |
| Problems |
| 3 Isotropic Hyperfine Effects In Epr Spectra |
| 3.1 Introduction |
| 3.2 Hyperfine Splitting from Protons |
| 3.3 Hyperfine Splittings from Other Nuclei with I = ½ |
| 3.4 Hyperfine Splittings from Nuclei with I > ½ |
| 3.5 Useful Rules for the Interpretation of EPR Spectra |
| 3.6 Higher-Order Contributions to Hyperfine Splittings |
| 3.7 Deviations from the Simple Multinomial Scheme |
| 3.8 Other Problems Encountered in EPR Spectra of Free Radicals |
| 3.9 Some Interesting p-Type Free Radicals |
| References |
| Notes |
| Further Reading |
| Problems |
| 4 Zeeman Energy (G) Anisotropy |
| 4.1 Introduction |
| 4.2 Systems with High Local Symmetry |
| 4.3 Systems with Rhombic Local Symmetry |
| 4.4 Construction of the g Matrix |
| 4.5 Symmetry-Related Sites |
| 4.6 EPR Line Intensities |
| 4.7 Statistically Randomly Oriented Solids |
| 4.8 Spin-Orbit Coupling and Quantum-Mechanical Modeling of g |
| 4.9 Comparative Overview |
| References |
| Notes |
| Further Reading |
| Problems |
| 5 Hyperfine (A) Anisotropy |
| 5.1 Introduction |
| 5.2 Origin of the Anisotropic Part of the Hyperfine Interaction |
| 5.3 Determination and Interpretation of the Hyperfine Matrix |
| 5.4 Combined g and Hyperfine Anisotropy |
| 5.5 Multiple Hyperfine Matrices |
| 5.6 Systems With I > ½ |
| 5.7 Hyperfine Powder Lineshapes |
| References |
| Notes |
| Further Reading |
| Problems |
| 6 Systems With More Than One Unpaired Electron |
| 6.1 Introduction |
| 6.2 Spin Hamiltonian for Two Interacting Electrons |
| 6.3 Systems with S = 1Triplet States |
| 6.4 Interacting Radical Pairs |
| 6.5 Biradicals |
| 6.6 Systems with S > 1 |
| 6.7 High-Spin and High-Field Energy Terms |
| 6.8 The Spin Hamiltonian: A Summing up |
| 6.9 Modeling the Spin-Hamiltonian Parameters |
| References |
| Notes |
| Further Reading |
| Problems |
| 7 Paramagnetic Species In The Gas Phase |
| 7.1 Introduction |
| 7.2 Monatomic Gas-Phase Species |
| 7.3 Diatomic Gas-Phase Species |
| 7.4 Triatomic and Polyatomic Gas-Phase Molecules |
| 7.5 Laser Electron Paramagnetic Resonance |
| 7.6 Other Techniques |
| 7.7 Reaction Kinetics |
| 7.8 Astro-EPR |
| References |
| Notes |
| Further Reading |
| Problems |
| 8 Transition-Group Ions |
| 8.1 Introduction |
| 8.2 The Electronic Ground States of d-Electron Species |
| 8.3 The EPR Parameters of d-Electron Species |
| 8.4 Tanabe-Sugano Diagrams and Energy-Level Crossings |
| 8.5 Covalency Effects |
| 8.6 A Ferroelectric System |
| 8.7 Some f-Electron Systems |
| References |
| Notes |
| Further Reading |
| Problems |
| 9 The Interpretation Of Epr Parameters |
| 9.1 Introduction |
| 9.2 ¿-Type Organic Radicals |
| 9.3 ¿-Type Organic Radicals |
| 9.4 Triplet States and Biradicals |
| 9.5 Inorganic Radicals |
| 9.6 Electrically Conducting Systems |
| 9.7 Techniques for Structural Estimates from EPR Data |
| References |
| Notes |
| Further Reading |
| Problems |
| Appendix 9A Hu¨ckel Molecular-Orbital Calculations |
| HMO References |
| HMO Problems |
| 10 Relaxation Times, Linewidths And Spin Kinetic Phenomena |
| 10.1 Introduction |
| 10.2 Spin Relaxation: General Aspects |
| 10.3 Spin Relaxation: Bloch Model |
| 10.4 Linewidths |
| 10.5 Dynamic Lineshape Effects |
| 10.6 Longitudinal Detection |
| 10.7 Saturation-Transfer EPR |
| 10.8 Time Dependence of the EPR Signal Amplitude |
| 10.9 Dynamic Nuclear Polarization |
| 10.10 Bio-Oxygen |
| 10.11 Summary |
| References |
| Notes |
| Further Reading |
| Problems |
| 11 Noncontinuous Excitation Of Spins |
| 11.1 Introduction |
| 11.2 The Idealized B 1 Switch-on |
| 11.3 The Single B 1 Pulse |
| 11.4 Fourier-Transform EPR and FID Analysis |
| 11.5 Multiple Pulses |
| 11.6 Electron Spin-Echo Envelope Modulation |
| 11.7 Advanced Techniques |
| 11.8 Spin Coherence and Correlation |
| References |
| Notes |
| Further Reading |
| Problems |
| 12 Double-Resonance Techniques |
| 12.1 Introduction |
| 12.2 A Continuous-Wave ENDOR Experiment |
| 12.3 Energy Levels and ENDOR Transitions |
| 12.4 Relaxation Processes in Steady-State ENDOR5 |
| 12.5 CW ENDOR: Single-Crystal Examples |
| 12.6 CW ENDOR in Powders and Non-Crystalline Solids |
| 12.7 CW ENDOR in Liquid Solutions |
| 12.8 Pulse Double-Resonance Experiments |
| 12.9 Electron-Electron Double Resonance (ELDOR |
| 12.10 Optically Detected Magnetic Resonance |
| 12.11 Fluorescence-Detected Magnetic Resonance |
| References |
| Notes |
| Further Reading |
| Problems |
| 13 Other Topics |
| 13.1 Apologia |
| 13.2 Biological Systems |
| 13.3 Clusters |
| 13.4 Charcoal, Coal, Graphite and Soot |
| 13.5 Colloids |
| 13.6 Electrochemical EPR |
| 13.7 EPR Imaging |
| 13.8 Ferromagnets, Antiferromagnets and Superparamagnets |
| 13.9 Glasses |
| 13.10 Geologic/Mineralogic Systems and Selected Gems |
| 13.11 Liquid Crystals |
| 13.12 "Point" Defects |
| 13.13 Polymers |
| 13.14 Radiation Dosage and Dating |
| 13.15 Spin Labels |
| 13.16 Spin Traps |
| 13.17 Trapped Atoms and Molecules |
| Appendix A Mathematical Operations |
| A.1 Complex Numbers |
| A.2 Operator Algebra |
| A.3 Determinants |
| A.4 Vectors: Scalar, Vector, and Outer Products |
| A.5 Matrices |
| A.6 Perturbation Theory |
| A.7 Dirac Delta Function |
| A.8 Group Theory |
| References |
| Notes |
| Further Reading |
| Problems |
| Appendix B Quantum Mechanics Of Angular Momentum |
| B.1 Introduction |
| B.2 Angular-Momentum Operators |
| B.3 Commutation Relations for General Angular-Momentum Operators |
| B.4 Eigenvalues of J 2 and J z |
| B.5 Superposition of States |
| B.6 Angular-Momentum Matrices |
| B.7 Addition of Angular Momenta |
| B.8 Notation for Atomic and Molecular States |
| B.9 Angular Momentum and Degeneracy of States |
| B.10 Time Dependence |
| B.11 Precession |
| B.12 Magnetic Flux Quantization |
| B.13 Summary |
| References |
| Notes |
| Further Reading |
| Problems |
| Notes for Problem B.12 |
| Appendix C The Hydrogen Atom And Selected Radicals Rh≪Sub≫N≪/Sub≫ |
| C.1 Hydrogen Atom |
| C.2 RH Radicals |
| C.3 RH2 Radicals |
| References |
| Notes |
| Further Reading |
| Problems |
| Appendix D Photons |
| D.1 Introduction |
| D.2 The Physical Aspects of Photons |
| D.3 Magnetic-Resonance Aspects |
| References |
| Notes |
| Appendix E Instrumentation And Technical Performance |
| E.1 Instrumental: Background |
| E.2 CW EPR Spectrometers |
| E.3 Pulsed EPR Spectrometers |
| E.4 Computer Interfacing with EPR Spectrometers |
| E.5 Techniques for Temperature Variation and Control |
| E.6 Techniques for Pressure Variation |
| References |
| Notes |
| Further Reading |
| Problems |
| Appendix F Experimental Considerations |
| F.1 Techniques for Generation of Paramagnetic Species |
| F.2 Lineshapes and Intensities |
| F.3 Sensitivity and Resolution |
| F.4 Measurements |
| References |
| Notes |
| Further Reading |
| Problems |
| Appendix G Epr-Related Books And Selected Chapters |
| Appendix H Fundamental Constants, Conversion Factors, And Key Data |
| Appendix I Miscellaneous Guidelines |
| I.1 Notation for Symbols |
| I.2 Glossary of Symbols |
| I.3 Abbreviations |
| I.4 Exponent Nomenclature |
| I.5 Journal Reference Style |
| Author Index |
| Subject Index |
