论坛上不少朋友对NMR驰豫的问题感兴趣,现上载一本关于NMR弛豫的专著供有兴趣者研读。 该书虽然是为化学家所写,但还是需要有一些物理学和NMR背景知识。该书对在实验室工作的NMR工作者是有用的。 这本书可能是教授化学家NMR驰豫技术的第一本专著。2005年出版,还是比较新的。 Practical NMR relaxation for chemists Author: Bakhmutov, Vladimir , I. Publisher: John Wiley & Sons, Ltd. Format: Adobe (Encrypted PDF) Content Language: English Contents 1 How and Why Nuclei Relax 1 1.1 Nucleus in an External Magnetic Field 4 1.2 Spin–Lattice and Spin–Spin Nuclear Relaxation 7 1.2.1 Macroscopic Magnetization: Relaxation Times T1 and T2 8 1.3 Molecular Motions as the Reason for Nuclear Relaxation 11 1.3.1 Correlation Times and Activation Energies of Molecular Motions 13 1.3.2 Isotropic and Anisotropic Molecular Motions 15 Bibliography 18 2 How to Measure NMR Relaxation Times 19 2.1 Exponential and Non-exponential Nuclear Relaxation 20 2.2 Measurements of Spin–Lattice Relaxation Times 20 2.3 Measurements of Selective and Biselective T1 Times 24 2.4 Determination of T1ρ and T2 27 2.5 Preparation of Samples for Relaxation Experiments 28 Bibliography 29 3 Errors in Determinations of Relaxation Times 31 3.1 Instrumental Errors 32 3.2 Incorrect Parameters for T1, T2 Measurements and T1, T2 Calculations 33 3.3 Coupled Nuclear Relaxation 34 3.4 Chemical Exchange 37 Bibliography 42 4 NMR Relaxation by Dipole–Dipole and Quadrupole Interactions 43 4.1 Intramolecular Dipole–Dipole Relaxation: Homo- and Heteronuclear Dipolar Coupling and the Spectral Density Function 44 4.2 How to Reveal the Presence of the Dipolar Mechanism 48 4.2.1 NOE as a Test for Dipole–Dipole Nuclear Relaxation 48 4.2.2 Evaluations of the Dipolar Contributions from Selective and Nonselective T1 Times 52