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Long-lived nuclear spin states in rapidly rotating CH2D groups

Long-lived nuclear spin states in rapidly rotating CH2D groups
Long-lived nuclear spin states in rapidly rotating CH2D groups
Although monodeuterated methyl groups support proton long-lived states, hindering of the methyl rotation limits the singlet relaxation time. We demonstrate an experimental case in which the rapid rotation of the CH2D group extends the singlet lifetime but does not quench the chemical shift difference between the CH2D protons, induced by the chiral environment. Proton singlet order is accessed using Spin-Lock Induced Crossing (SLIC) experiments, showing that the singlet relaxation time TSTS is over 2 min, exceeding the longitudinal relaxation time T1T1 by a factor of more than 10. This result shows that proton singlet states may be accessible and long-lived in rapidly rotating CH2D groups.
87-90
Elliott, Stuart
6cc724de-f75f-4c0f-a00a-e712b4e73b12
Brown, Lynda J.
75aa95fa-5d27-46a7-9dbe-0f465a664f5b
Dumez, Jean-Nicolas
9e2e29e1-fe59-40ea-97e0-e4dce6a12e8c
Levitt, Malcolm H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
Elliott, Stuart
6cc724de-f75f-4c0f-a00a-e712b4e73b12
Brown, Lynda J.
75aa95fa-5d27-46a7-9dbe-0f465a664f5b
Dumez, Jean-Nicolas
9e2e29e1-fe59-40ea-97e0-e4dce6a12e8c
Levitt, Malcolm H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3

Elliott, Stuart, Brown, Lynda J., Dumez, Jean-Nicolas and Levitt, Malcolm H. (2016) Long-lived nuclear spin states in rapidly rotating CH2D groups. Journal of Magnetic Resonance, 272, 87-90. (doi:10.1016/j.jmr.2016.09.009).

Record type: Article

Abstract

Although monodeuterated methyl groups support proton long-lived states, hindering of the methyl rotation limits the singlet relaxation time. We demonstrate an experimental case in which the rapid rotation of the CH2D group extends the singlet lifetime but does not quench the chemical shift difference between the CH2D protons, induced by the chiral environment. Proton singlet order is accessed using Spin-Lock Induced Crossing (SLIC) experiments, showing that the singlet relaxation time TSTS is over 2 min, exceeding the longitudinal relaxation time T1T1 by a factor of more than 10. This result shows that proton singlet states may be accessible and long-lived in rapidly rotating CH2D groups.

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More information

Accepted/In Press date: 15 September 2016
e-pub ahead of print date: 16 September 2016
Published date: November 2016
Organisations: Magnetic Resonance

Identifiers

Local EPrints ID: 400728
URI: http://eprints.soton.ac.uk/id/eprint/400728
PURE UUID: 91e9bc3b-8266-4c26-8653-ccb530113edb
ORCID for Lynda J. Brown: ORCID iD orcid.org/0000-0002-5678-0814
ORCID for Malcolm H. Levitt: ORCID iD orcid.org/0000-0001-9878-1180

Catalogue record

Date deposited: 26 Sep 2016 08:15
Last modified: 26 Nov 2021 06:40

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Contributors

Author: Stuart Elliott
Author: Lynda J. Brown ORCID iD
Author: Jean-Nicolas Dumez

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