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
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
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Carravetta, Marina
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January 2019
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, .
(doi:10.1016/j.jmr.2018.10.017).
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.
Text
manuscript_revised
- Accepted Manuscript
More information
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
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Date deposited: 26 Nov 2018 17:30
Last modified: 16 Mar 2024 07:19
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Author:
Maria Concistre
Author:
Ibraheem M. Haies
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