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A temperature-controlled sample shuttle for field-cycling NMR

A temperature-controlled sample shuttle for field-cycling NMR
A temperature-controlled sample shuttle for field-cycling NMR

We present a design for a temperature-controlled sample shuttle for use in NMR measurements at variable magnetic field strength. Accurate temperature control was achieved using a mixture of water-ethylene glycol as a heat transfer fluid, reducing temperature gradients across the sample to < 0.05 °C and minimising convection. Using the sample shuttle, we show how the longitudinal (T 1) and singlet order (T S) relaxation time constants were measured for two molecules capable of supporting long-lived states, with new record lifetimes observed at low field and above ambient temperatures.

Field-cycling NMR, Sample shuttle, Singlet NMR, Spin relaxation
1090-7807
Pileio, Giuseppe
13f78e66-0707-4438-b9c9-6dbd3eb7d4e8
Hall, Andrew MR
7188556b-d6e9-46a8-bf14-f9f4170edc0a
Cartlidge, David
2c7328e8-b4bb-462b-bf50-47fdc1236437
Pileio, Giuseppe
13f78e66-0707-4438-b9c9-6dbd3eb7d4e8
Hall, Andrew MR
7188556b-d6e9-46a8-bf14-f9f4170edc0a
Cartlidge, David
2c7328e8-b4bb-462b-bf50-47fdc1236437

Pileio, Giuseppe, Hall, Andrew MR and Cartlidge, David (2020) A temperature-controlled sample shuttle for field-cycling NMR. Journal of Magnetic Resonance, 317, [106778]. (doi:10.1016/j.jmr.2020.106778).

Record type: Article

Abstract

We present a design for a temperature-controlled sample shuttle for use in NMR measurements at variable magnetic field strength. Accurate temperature control was achieved using a mixture of water-ethylene glycol as a heat transfer fluid, reducing temperature gradients across the sample to < 0.05 °C and minimising convection. Using the sample shuttle, we show how the longitudinal (T 1) and singlet order (T S) relaxation time constants were measured for two molecules capable of supporting long-lived states, with new record lifetimes observed at low field and above ambient temperatures.

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Accepted/In Press date: 23 June 2020
e-pub ahead of print date: 27 June 2020
Published date: August 2020
Additional Information: Funding Information: This work was supported by a research grant from EPSRC , United Kingdom ( EP/P005187/1 ) "HyperStore: Singlet states and supercritical fluids for storage and transport of hyperpolarised spin order”. The authors would like to thank LakeShore Cryotonics for supplying the miniature Hall effect sensor used for magnetic field strength measurements, Dr Lynda Brown for synthesis of labelled compounds and Dr Francesco Giustiniano for many useful discussions. The authors acknowledge the COST , European Union, CA15209 “ , "European Network on NMR Relaxometry”. Publisher Copyright: © 2020 The Authors
Keywords: Field-cycling NMR, Sample shuttle, Singlet NMR, Spin relaxation

Identifiers

Local EPrints ID: 442575
URI: http://eprints.soton.ac.uk/id/eprint/442575
ISSN: 1090-7807
PURE UUID: 29dee124-90f5-47d8-ade6-4ac0389c068d
ORCID for Giuseppe Pileio: ORCID iD orcid.org/0000-0001-9223-3896

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Date deposited: 20 Jul 2020 16:30
Last modified: 17 Mar 2024 03:03

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Contributors

Author: Giuseppe Pileio ORCID iD
Author: Andrew MR Hall
Author: David Cartlidge

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