Nonlinear sampling in ultrafast Laplace NMR

Живонитко, Владимир В.; Ullah, Sharif; Telkki, Ville‐Veikko

doi:10.1016/j.jmr.2019.106571

Cited by 12 publications

(6 citation statements)

References 34 publications

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“…It has recently been shown that non-linear frequency sweeps can be used to perform more efficient spatial encoding. This was shown in the case of spatial encoding of relaxation, using a logarithmic frequency sweep [55]. With this sweep, the recovery delay varies exponentially with position, which makes it possible to measure broader ranges of relaxation rates than with linear sampling.…”

Section: Discussionmentioning

confidence: 99%

Frequency-swept pulses for ultrafast spatially encoded NMR

Dumez

2021

Journal of Magnetic Resonance

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Ultrafast NMR based on spatial encoding yields arbitrary multidimensional spectra in a single scan. The dramatic acceleration afforded by spatial parallelisation makes it possible to capture transient species and processes, and has notably been applied to the monitoring of reactions and the analysis of hyperpolarised species. At the heart of ultrafast NMR lies the spatially sequential manipulation of nuclear spins. This is virtually always achieved by combining a swept radio-frequency pulse with a magnetic field gradient pulse. The dynamics of nuclear spins during these pulse sequence elements is key to understand and design ultrafast NMR experiments, and can often be described by surprisingly simple models. This article describes the spatial encoding of relaxation, chemical shift and diffusion in a common framework and discusses directions for future developments.

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Section: Discussionmentioning

confidence: 99%

Frequency-swept pulses for ultrafast spatially encoded NMR

Dumez

2021

Journal of Magnetic Resonance

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“…Laplace NMR has been used to monitor chemical processes that result in changes in T 1 , T 2 or D, 54,55 although the technique is most typically applied to detection of bulk water at M concentrations. 36,56,57 Here, monitoring of chemical reactions involving species at tens of mM concentrations using ultrafast LNMR has been demonstrated. The advantage of using Laplace NMR to monitor these reactions is that the experiments used here took just 11 minutes and could provide information on both D and T 2 in the same measurement, whereas 1D CPMG and DOSY experiments took 36 mins each, providing a ca 6.5-fold time saving.…”

Section: Formation Of Sabre Catalysts Examined Using Thermally Polarised Ultrafast Laplace Nmrmentioning

confidence: 99%

Ultrafast Laplace NMR to study metal–ligand interactions in reversible polarisation transfer from parahydrogen

Tickner

Живонитко

Telkki

2021

Phys. Chem. Chem. Phys.

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“…This was illustrated with the example of exponentially spaced recovery delays. 8 However, this is not demonstrated for other sampling schemes. Here we show that quadratic spacing is achieved with an RF pulse, the offset of which varies as the time squared.…”

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confidence: 93%