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  Singlet order conversion and parahydrogen-induced hyperpolarization of 13C nuclei in near-equivalent spin systems.

Eills, J., Stevanato, G., Bengs, C., Glöggler, S., Elliott, S. J., Alonso-Valdesueir, J., et al. (2017). Singlet order conversion and parahydrogen-induced hyperpolarization of 13C nuclei in near-equivalent spin systems. Journal of Magnetic Resonance, 274, 163-172. doi:10.1016/j.jmr.2016.11.010.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-2C9D-F Version Permalink: http://hdl.handle.net/21.11116/0000-0000-2CAC-E
Genre: Journal Article

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Eills, J., Author
Stevanato, G., Author
Bengs, C., Author
Glöggler, S.1, Author              
Elliott, S. J., Author
Alonso-Valdesueir, J., Author
Pileio, G., 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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 Abstract: We have demonstrated two radiofrequency pulse methods which convert the nuclear singlet order of proton spin pairs into the magnetisation of nearby 13C nuclei. These irradiation schemes work well in the near-equivalence regime of the three-spin system, which applies when the difference in the two 1H-13C couplings is much smaller than the 1H-1H coupling. We use pulse sequences to generate thermally polarized singlet states in a reproducible manner, and study the singlet-to-magnetisation transfer step. Preliminary results demonstrate a parahydrogen-enhanced 13C polarization level of at least 9%, providing a signal enhancement factor of more than 9000, using 50% enriched parahydrogen.

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Language(s): eng - English
 Dates: 2016-12-012017-01
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.jmr.2016.11.010
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Title: Journal of Magnetic Resonance
Source Genre: Journal
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Pages: - Volume / Issue: 274 Sequence Number: - Start / End Page: 163 - 172 Identifier: -