Spatial localization in the cyclicJ heteronuclear rotating frame coherence transfer

Demco, Dan E.; Muntean, Ligia; Coroiu, I.

doi:10.1007/bf03162791

Cited by 1 publication

(3 citation statements)

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“…i= SL or ADRF , (18) where the prefactor on the right side of Eq. (18) is the inverse formal spin temperature at thermal equilibrium, which is reached at the end of the coherence transfer process, and fli, i (z, 0) is the local initial inverse spin temperature for the I-spins [34].…”

Section: Tisi (Z)mentioning

confidence: 99%

“…Following the slice-selective preparation of the S-spin magnetization, the full spectroscopic information of the dilute spins may be exploited using suitable pulse sequences. The same selection principles have been applied to J-cross polarization in liquids [16][17][18], demonstrating the potential applicability of the method in the field of biological imaging and spectral editing.…”

Section: Introductionmentioning

confidence: 99%

“…For all these single-quantum cross-polarization procedures performed in solids or liquids, the theoretical and experimental results [13][14][15][16][17][18] show that the width of the slice vades inversely proportional to the magnetic field gradient strength, which therefore is the most important parameter determining the spatial resolution.…”

Section: Introductionmentioning

confidence: 99%

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Slice selection in solids by localized double-quantum coherence transfer

et al. 1995

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Abstraet. Double-quantum heteronuclear coherente transfer in solids shows a strong spatial dependence when performed in the presente of a magnetic field gradient. This is a direct consequence of the off-resonance sensitivity of the coherente transfer process and represents a new principle for localized NMR spectroscopy of quadrupole nuclei in solids. Since the slice-selective excitation is achieved simultaneously to the cross-pola¡ the suggested pulse sequences avoid the use of shaped pulses, the application of which is problematic in solids. In the present work, the localization efficiency of this new slice-selection principle was analyzed in dependence on the experimental parameters for a spin system consisting of abundant spin-1/2 and rare spin-1 nuclei. The resulting slice profiles and the calculated dependences of the slice thickness for the basic coherence transfer procedures are discussed on the example of IH-~I-I in monodeuterated benzene. The proposed method opens the possibility of volume-selective investigations of the structure and dynamics of materials using the well-established methodology of deuteron-NMR spectroscopy.

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Section: Tisi (Z)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%