The University of Southampton
University of Southampton Institutional Repository

Lineshape-based polarimetry of dynamically-polarized in solid-state mixtures

Lineshape-based polarimetry of dynamically-polarized in solid-state mixtures
Lineshape-based polarimetry of dynamically-polarized in solid-state mixtures
Dynamic nuclear polarization (DNP) of 15N2O, known for its long-lived singlet-state order at low magnetic field, is demonstrated in organic solvent/trityl mixtures at ?1.5 K and 5 T. Both 15N polarization and intermolecular dipolar broadening are strongly affected by the sample’s thermal history, indicating spontaneous formation of N2O clusters. In situ 15N NMR reveals four distinct powder-pattern spectra, attributed to the chemical-shift anisotropy (CSA) tensors of the two 15N nuclei, further split by the intramolecular dipolar coupling between their magnetic moments. 15N polarization is estimated by fitting the free-induction decay (FID) signals to the analytical model of four single-quantum transitions. This analysis implies (10.2±2.2)% polarization after 37 h of DNP, and provides a direct, instantaneous probe of the absolute 15N polarization, without a need for time-consuming referencing to a thermal-equilibrium NMR signal
90-94
Kuzma, N.N.
b1a90314-87e3-4d84-8428-401fd65eadc9
Hakansson, Par
814e08b5-ae95-408f-a669-bec9c0ef4235
Pourfathi, M.
16d089cc-c693-4958-8a5e-30866a370512
Ghosh, R.K.
ed6049cf-5f79-4d71-8104-8fae73155c06
Kara, H.
48bd7208-2057-47dd-8b08-030ec37bcd96
Kadlecek, S.J.
42714233-150e-4c15-bcc7-7468b057b40d
Pileio, Giuseppe
13f78e66-0707-4438-b9c9-6dbd3eb7d4e8
Levitt, M.H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
Rizi, R.R.
708f57a0-b9bd-403b-842e-ede7f1fcb338
Kuzma, N.N.
b1a90314-87e3-4d84-8428-401fd65eadc9
Hakansson, Par
814e08b5-ae95-408f-a669-bec9c0ef4235
Pourfathi, M.
16d089cc-c693-4958-8a5e-30866a370512
Ghosh, R.K.
ed6049cf-5f79-4d71-8104-8fae73155c06
Kara, H.
48bd7208-2057-47dd-8b08-030ec37bcd96
Kadlecek, S.J.
42714233-150e-4c15-bcc7-7468b057b40d
Pileio, Giuseppe
13f78e66-0707-4438-b9c9-6dbd3eb7d4e8
Levitt, M.H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
Rizi, R.R.
708f57a0-b9bd-403b-842e-ede7f1fcb338

Kuzma, N.N., Hakansson, Par, Pourfathi, M., Ghosh, R.K., Kara, H., Kadlecek, S.J., Pileio, Giuseppe, Levitt, M.H. and Rizi, R.R. (2013) Lineshape-based polarimetry of dynamically-polarized in solid-state mixtures. Journal of Magnetic Resonance, 234, 90-94. (doi:10.1016/j.jmr.2013.06.008).

Record type: Article

Abstract

Dynamic nuclear polarization (DNP) of 15N2O, known for its long-lived singlet-state order at low magnetic field, is demonstrated in organic solvent/trityl mixtures at ?1.5 K and 5 T. Both 15N polarization and intermolecular dipolar broadening are strongly affected by the sample’s thermal history, indicating spontaneous formation of N2O clusters. In situ 15N NMR reveals four distinct powder-pattern spectra, attributed to the chemical-shift anisotropy (CSA) tensors of the two 15N nuclei, further split by the intramolecular dipolar coupling between their magnetic moments. 15N polarization is estimated by fitting the free-induction decay (FID) signals to the analytical model of four single-quantum transitions. This analysis implies (10.2±2.2)% polarization after 37 h of DNP, and provides a direct, instantaneous probe of the absolute 15N polarization, without a need for time-consuming referencing to a thermal-equilibrium NMR signal

Full text not available from this repository.

More information

Published date: 2013
Organisations: Magnetic Resonance

Identifiers

Local EPrints ID: 356264
URI: https://eprints.soton.ac.uk/id/eprint/356264
PURE UUID: 4c11ca41-6c78-4e91-bd3e-81dcb9f3ccf9
ORCID for Giuseppe Pileio: ORCID iD orcid.org/0000-0001-9223-3896
ORCID for M.H. Levitt: ORCID iD orcid.org/0000-0001-9878-1180

Catalogue record

Date deposited: 06 Sep 2013 08:26
Last modified: 15 Aug 2019 00:48

Export record

Altmetrics

Contributors

Author: N.N. Kuzma
Author: Par Hakansson
Author: M. Pourfathi
Author: R.K. Ghosh
Author: H. Kara
Author: S.J. Kadlecek
Author: Giuseppe Pileio ORCID iD
Author: M.H. Levitt ORCID iD
Author: R.R. Rizi

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×