Homonuclear Separated Local-Field Spectroscopy by Magnetization-Exchange NMR
نویسندگان
چکیده
منابع مشابه
Heteronuclear isotropic mixing separated local field NMR spectroscopy.
This paper presents a theoretical, numerical, and experimental study of a new class of separated local field (SLF) techniques. These techniques are based on the heteronuclear isotropic mixing leading to spin exchange via the local field (HIMSELF). It is shown that highly efficient and robust SLF experiments can be designed based on double channel windowless homonuclear decoupling sequences. Com...
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We are in this work comparing the efficiencies of various 1H-13C separated local field (SLF) experiments when applied to columnar and nematic liquid crystals. In particular, the performances of the conventional SLF, proton-detected local field (PDLF), and polarization inversion spin exchange at the magic angle (PISEMA) methods in terms of spectral resolution, robustness, and ability to measure ...
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In this report, the application of a class of separated local field NMR experiments named dipolar chemical shift correlation (DIPSHIFT) for probing motions in the intermediate regime is discussed. Simple analytical procedures based on the Anderson-Weiss (AW) approximation are presented. In order to establish limits of validity of the AW based formulas, a comparison with spin dynamics simulation...
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Recently, Garbow, Weitekamp, and Pines introduced a new approach to homonuclear broadband decoupling (I). Independently, a closely related experiment has been proposed for semiselective heteronuclear J spectroscopy (2). The two types of experiments have the common feature that all protons which are not directly attached to a 13C nucleus experience an effect as if a nonselective 180” pulse were ...
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ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 1997
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.92.1135