Hydrophobic radicals embedded in neutral surfactants for dynamic nuclear polarization of aqueous environments at 9.4 Tesla
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It is shown how selective high resoln. 2-dimensional NMR spectra can be obtained which feature multiplets where all peaks have the same pos. sign and pure absorption lineshapes. [on SciFinder (R)] ...
An anal. was made of the effects of nonexponential transverse relaxation during the free precession periods of 2-dimensional NMR expts. The presence of cross-correlation between various interactions that cause relaxation, such as chem. shift anisotropy and ...
By simultaneously irradiating the resonances of 2 selected nuclei in a macromol. with selective radio-frequency fields, one can measure the cross-relaxation rate (Overhauser effect) between 2 sites without perturbations due to spin-diffusion effects involv ...
Nuclear spin diffusion can be utilized efficiently to gain information on the microscopic homogeneity in disordered solids. Two-dimensional NMR spectroscopy is employed for the measurement of the nuclear spin diffusion. The method is illustrated by compari ...
1982
The measurement of the migration of longitudinal 2-spin order by 2-dimensional (2D) exchange spectroscopy or by selective 1-dimensional (1D) methods (2D or 1D zz-exchange spectroscopy) allows unambiguous differentiation between chem. exchange and cross-rel ...
1985
A review with 27 refs. [on SciFinder (R)] ...
1984
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New NMR techniques are described for transferring transverse magnetization between scalar-coupled nuclei in the rotating frame. The methods involve simultaneous spin-locking of two selected spins A and X, using cosinusoidal modulation of the radio frequenc ...
1991
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Cross-correlation between proton chem. shift anisotropy and proton-proton dipolar interactions is shown to be an important relaxation mechanism. Cross-correlation leads to a partial conversion of Zeeman order into longitudinal two-spin order. The build-up ...
1989
A novel class of NMR expts., based on the systematic variation of 3 time variables, permits both the identification of exchange networks and the direct measurement of the corresponding rate consts. in soln. Linear combinations of cross sections taken from ...
1982
Two-dimensional nuclear Overhauser enhancement (NOESY) spectra of labile protons were recorded in H2O solutions of a protein and of a DNA duplex, using a modification of the standard NOESY experiment with all three 90 degree pulses replaced by jump-and-ret ...
