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  Field-cycling long-lived-state NMR of 15N2 spin pairs.

Elliot, S. J., Kadeřáve, P., Brown, L. J., Sabba, M., Glöggler, S., O'Leary, D. J., et al. (2019). Field-cycling long-lived-state NMR of 15N2 spin pairs. Molecular Physics, 117(7-8), 861-867. doi:10.1080/00268976.2018.1543906.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-A169-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-4F03-2
Genre: Journal Article

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 Creators:
Elliot, S. J., Author
Kadeřáve, P., Author
Brown, L. J., Author
Sabba, M., Author
Glöggler, S.1, Author              
O'Leary, D. J., Author
Brown, R. C. D., Author
Ferrage, F., Author
Levitt, M. H., Author
Affiliations:
1Research Group of NMR Signal Enhancement, MPI for Biophysical Chemistry, Max Planck Society, ou_2396691              

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Free keywords: Long-lived states, 15N2 spin pair, field-cycling, two-field NMR spectrometer
 Abstract: A range of nuclear magnetic resonance spectroscopy and imaging applications are limited by the short lifetimes of magnetisation in solution. Long-lived states, which are slowly relaxing configurations of nuclear spins, have been shown to alleviate this limitation. Long-lived states have decay lifetimes significantly exceeding the longitudinal relaxation time , in some cases by an order of magnitude. Here we present an experimental case of a long-lived state for a 15N labelled molecular system in solution. We observe a strongly biexponential decay for the long-lived state, with the lifetime of the slowly relaxing component exceeding 40 minutes, ∼21 times longer than the spin-lattice relaxation time . The lifetime of the long-lived state was revealed by using a dedicated two-field NMR spectrometer capable of fast sample shuttling between high and low magnetic fields, and the application of a resonant radiofrequency field at low magnetic field. The relaxation characteristics of the long-lived state are examined.

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Language(s): eng - English
 Dates: 2018-11-082019-03-29
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1080/00268976.2018.1543906
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Title: Molecular Physics
Source Genre: Journal
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Pages: - Volume / Issue: 117 (7-8) Sequence Number: - Start / End Page: 861 - 867 Identifier: -