期刊
PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY
卷 98-99, 期 -, 页码 1-19出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pnmrs.2016.11.002
关键词
Singlet states; Singlet order; Field-cycling; Singlet-locking; M2S; SLIC; Singlet order filtration
资金
- EPSRC [EP/I036141/1]
- ERC [291044 - HYPERSINGLET]
- EPSRC [EP/I036141/1, EP/P009980/1, EP/P030491/1, EP/N002482/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/N002482/1, EP/I036141/1, EP/P030491/1, EP/K00509X/1, EP/P009980/1] Funding Source: researchfish
This paper discusses methodology developed over the past 12 years in order to access and manipulate singlet order in systems comprising two coupled spin-112 nuclei in liquid-state nuclear magnetic resonance. Pulse sequences that are valid for different regimes are discussed, and fully analytical proofs are given using different spin dynamics techniques that include product operator methods, the single transition operator formalism, and average Hamiltonian theory. Methods used to filter singlet order from byproducts of pulse sequences are also listed and discussed analytically. The theoretical maximum amplitudes of the transformations achieved by these techniques are reported, together with the results of numerical simulations performed using custom-built simulation code. (C) 2016 Elsevier B.V. All rights reserved.
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