Author: Ole Winneche SørensenPublisher:
ISBN:
Category :
Languages : en
Pages : 269
Book Description
Modern Pulse Techniques in Liquid State Nuclear Magnetic Resonance Spectroscopy
Author: Ole Winneche SørensenPublisher:
ISBN:
Category :
Languages : en
Pages : 269
Book Description
Modern Pulse Techniques in Liquid State Nuclear Magnetic Resonance Spectroscopy
Author: Ole Winneche SørensenPublisher:
ISBN:
Category :
Languages : en
Pages : 269
Book Description
Multiple-pulse Techniques for Solid-state Nuclear Magnetic Resonance Spectroscopy of Materials
Author: Anthony D. MontinaExperimental Pulse NMR
Author: Eiichi FukushimaPublisher: CRC Press
ISBN: 042996241X
Category : Science
Languages : en
Pages : 556
Book Description
This book is about pulse nuclear magnetic resonance (NMR), with its techniques, the information to be obtained, and practical advice on performing experiments. The emphasis is on the motivation and physical ideas underlying NMR experiments and the actual techniques, including the hardware used. The level is generally suitable for those to whom pulse NMR is a new technique, be they students in chemistry or physics on the one hand and research workers in biology, geology, or agriculture, on the other. The book can be used for a senior or first year graduate course where it could supplement the standard NMR texts.
Design and Applications of Pulse Techniques in High-resolution Solid and Liquid State NMR Spectroscopy
Author: Niels Chr NielsenPulse Methods in 1D & 2D Liquid-Phase NMR
Author: Wallace S. BreyPublisher: Elsevier
ISBN: 0080917038
Category : Science
Languages : en
Pages : 572
Book Description
FROM THE PREFACE: Pulse Methods in 1D and 2D Liquid-Phase NMR is written to enable the practicing NMR spectroscopist to understand and apply the varied and powerful new techniques developed in the past few years for obtaining spectra with greatly increased information content and from smaller and smaller samples. The intent is to describe both theory and practice in simple and detailed fashion so that the methods may be critically evaluated and effectively used in any potential application. As methods become more complex they require more instrument time, and it is important to be able to judge whether the investment of this time is justified. It is also essential for the spectroscopist to be in a position to evaluate the capabilities of the instrumentation available, as well as the additional requirements for utilization of particular new methods. The material in this book assumes a knowledge of continuous-wave NMR methods as well as an elementary understanding of the normal pulsed Fourier-transform spectroscopic procedures, together with a knowledge of such related phenomena as the nuclear Overhauser effect. Although much of the treatment is necessarily methematical, this aspect of the presentation has been simplified as much as possible.
Pulse and Fourier Transform NMR
Author: Thomas C. FarrarPublisher: Elsevier
ISBN: 0080918123
Category : Science
Languages : en
Pages : 132
Book Description
Pulse and Fourier Transform NMR: Introduction to Theory and Methods presents the different types of pulse experiments that are commonly used and provides the theoretical background necessary for understanding these techniques. This book evaluates the practical application of pulse methods and the necessary instrumentation. Organized into seven chapters, this book begins with an overview of the NMR fundamentals and the basic pulse methods. This text then summarizes the important features of pulse spectrometers. Other chapters consider the rationale, the advantages, and the limitations of Fourier transform NMR methods. This book discusses as well how the idea of the rotating frame can be utilized to understand certain experiments that extend the range of application of pulse methods. The final chapter deals with a few significant special uses of pulse techniques. This book is a valuable resource for chemists and readers who are familiar with high resolution NMR but with no background in pulse methods.
Transient Techniques in NMR of Solids
Author: Bernard C. GersteinPublisher:
ISBN:
Category : Science
Languages : en
Pages : 320
Book Description
This volume is an ideal starting point for the graduate student seeking a basic introduction to the theory and uses of solid-state nuclear magnetic resonance (NMR) spectroscopy. Accessible to students with only a survey-level physics background, the material assumes little prior knowledge of the basic theory of electromagnetism. All the major areas are covered, including an introduction to concepts of time-dependent quantum mechanics as they apply to NMR spectroscopy of the solid state. Each chapter includes problems designed to enhance the reader's understanding of the material. Instructive and practical, this volume provides the basic knowledge needed to access the general literature and the more advanced monographs on this subject. In addition to assisting entrance into the field, Transient Techniques in NMR of Solids will be a useful guide for professionals already working in related areas of chemistry. FROM THE PREFACE: Nuclear magnetic resonance (NMR) is truly a remarkable phenomenon. Remarkable can imply different things to different people. From the point of view of a physicist, spin dynamics is an elegant example of the use of time-dependent quantum mechanics, and NMR absorption of energy is a prototype for spectroscopic transitions. From the point of view of the practicing chemist and materials scientist, NMR spectroscopy is an invaluable tool for the identification of chemical species and structures. Had NMR spectroscopic techniques commercially available in the early 1960s been the only result of investigations of this phenomenon, it would have had a major impact on the course of chemical analysis. The study of liquids and solutions for chemical shifts and couplings of protons had produced a rapid means of identifying chemical species nondestructively. The study of dynamical properties also could be addressed by study of temperature dependence of the spectra or of the saturation of the resonance by high-power irradiation. Even at that time, however, studies of the spin dynamics had already begun to indicate that there were many interesting facets of the NMR phenomenon left to exploit. For example, the Fourier-transform relationship of the free-induction decay and the absorption spectrum had been shown and the basis of the cross-polarization experiment was being investigated. A number of chemists had begun to study the spin*b1lattice relaxation times of species by pulse NMR techniques by utilizing methods that were not familiar at that time to the typical chemist but that are now commonly employed in NMR analysis. The principal characteristic of the NMR technique that makes it so useful for chemical analysis of liquids and solutions is the high resolution that allows one to observe very small interactions such as the chemical shift and the spin*b1spin coupling. These weak interactions are quite sensitive to the local environment of the spin and therefore may be used as a diagnostic for the environment. The connectivity of chemical structure is often mimicked closely in the NMR connectivity of the spectrum, and quantitative informaton is relatively easy to obtain. Nuclear magnetic resonance spectra of solids exhibit such resolution only in special cases. The primary (although not the exclusive) reason for the lack of resolution in the spectrum of a typical solid is the presence of the dipole*b1dipole interaction, which dominates the NMR spectroscopy of solids that have been of interest to chemists. One solution (no pun intended) to the problem of obtaining chemical-shift information about such solids is to dissolve them and to study them in solution. However, if the solid is insoluble or otherwise intractable or if the analysis involves questions about the properties of the substance in the solid state, then there arises a need for techniques to study the weaker interactions in the presence of the dipole*b1dipole interaction or other overwhelming interactions. This volume describes the means dev
Multiple-pulse Techniques for Solid-state Nuclear Magnetic Resonance Spectroscopy of Materials
Author: Tony MontinaPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Solid state NMR has the ability to obtain detailed structural information at the molecular level in materials. This has led to the development of a large number of high resolution techniques, some of which utilize multiple pulse methods. The behaviour of these multiple pulse techniques has, to date, been explained using either relaxation or spin dynamics. Ultimately, an explanation based on a combination of both dynamics is required in order to properly understand the underlying mechanism of these techniques. This work presents an explanation of the experimental behaviour observed for three multiple pulse domain selection techniques: the DIVAM, Direct DIVAM, and Refocused DIVAM sequences. This is based on a combination of spin and relaxation dynamics and is accomplished using both analytical expressions and simulations obtained using a general simulation program for solid-state NMR spectroscopy (SIMPSON).
Nuclear Magnetic Resonance
Author: Daniel CanetPublisher:
ISBN:
Category : Science
Languages : en
Pages : 274
Book Description
Emphasizes the physical and mathematical features of liquid state NMR spectroscopy which underpin the numerous important applications of the technique. Details of some of these applications, such as structural determination from small organic molecules to large biomolecules, the study of molecular motions and NMR imaging then follow. Detailed examples and figures throughout the text enable the student to grasp conceptually challenging ideas, while the most advanced mathematical and quantum concepts are presented so that they can be skipped on a first reading without impeding a global understanding of the key concepts.