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14N overtone NMR under MAS: signal enhancement using cross-polarization methods

14N overtone NMR under MAS: signal enhancement using cross-polarization methods
14N overtone NMR under MAS: signal enhancement using cross-polarization methods
Polarization transfer methods are widely adopted for the purpose of correlating different nuclear species as well as to achieve signal enhancement. Polarization transfer from 1H to the 14N overtone transition (Δm=2) can be achieved using cross polarization methods under magic-angle spinning conditions, where spin locks of the order of several milliseconds can be obtained on common bio-solids (α-glycine and N-acetylvaline). Signal enhancement factors up to 4.4 per scan, can be achieved under favorable conditions, despite MHz-sized quadrupolar interaction. Moreover, we present a detailed theoretical treatment and accurate numerical simulations which are in excellent agreement the unusual experimental matching conditions observed for cross-polarization to 14N overtone.
overtone NMR, quadrupolar NMR, cross-polarization
1090-7807
1-5
Concistre, Maria
ec95c9d4-ecb8-4c28-a464-8c3adba9e86d
Kuprov, Ilya
bb07f28a-5038-4524-8146-e3fc8344c065
Haies, Ibraheem M.
d14dce0d-4693-429a-8047-7770f3765d02
Williamson, Philip
0b7715c6-b60e-4e95-a1b1-6afc8b9f372a
Carravetta, Marina
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691
Concistre, Maria
ec95c9d4-ecb8-4c28-a464-8c3adba9e86d
Kuprov, Ilya
bb07f28a-5038-4524-8146-e3fc8344c065
Haies, Ibraheem M.
d14dce0d-4693-429a-8047-7770f3765d02
Williamson, Philip
0b7715c6-b60e-4e95-a1b1-6afc8b9f372a
Carravetta, Marina
1b12fa96-4a6a-4689-ab3b-ccc68f1d7691

Concistre, Maria, Kuprov, Ilya, Haies, Ibraheem M., Williamson, Philip and Carravetta, Marina (2019) 14N overtone NMR under MAS: signal enhancement using cross-polarization methods. Journal of Magnetic Resonance, 298, 1-5. (doi:10.1016/j.jmr.2018.10.017).

Record type: Article

Abstract

Polarization transfer methods are widely adopted for the purpose of correlating different nuclear species as well as to achieve signal enhancement. Polarization transfer from 1H to the 14N overtone transition (Δm=2) can be achieved using cross polarization methods under magic-angle spinning conditions, where spin locks of the order of several milliseconds can be obtained on common bio-solids (α-glycine and N-acetylvaline). Signal enhancement factors up to 4.4 per scan, can be achieved under favorable conditions, despite MHz-sized quadrupolar interaction. Moreover, we present a detailed theoretical treatment and accurate numerical simulations which are in excellent agreement the unusual experimental matching conditions observed for cross-polarization to 14N overtone.

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Accepted/In Press date: 31 October 2018
e-pub ahead of print date: 3 November 2018
Published date: January 2019
Keywords: overtone NMR, quadrupolar NMR, cross-polarization

Identifiers

Local EPrints ID: 426361
URI: http://eprints.soton.ac.uk/id/eprint/426361
ISSN: 1090-7807
PURE UUID: 74ce639f-ba0e-495d-a920-cc04f53be661
ORCID for Ilya Kuprov: ORCID iD orcid.org/0000-0003-0430-2682
ORCID for Philip Williamson: ORCID iD orcid.org/0000-0002-0231-8640
ORCID for Marina Carravetta: ORCID iD orcid.org/0000-0002-6296-2104

Catalogue record

Date deposited: 26 Nov 2018 17:30
Last modified: 22 Nov 2021 06:58

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Contributors

Author: Maria Concistre
Author: Ilya Kuprov ORCID iD
Author: Ibraheem M. Haies

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