Articles | Volume 1, issue 2
Magn. Reson., 1, 237–246, 2020
https://doi.org/10.5194/mr-1-237-2020

Special issue: Geoffrey Bodenhausen Festschrift

Magn. Reson., 1, 237–246, 2020
https://doi.org/10.5194/mr-1-237-2020

Research article 14 Oct 2020

Research article | 14 Oct 2020

Surprising absence of strong homonuclear coupling at low magnetic field explored by two-field nuclear magnetic resonance spectroscopy

Ivan V. Zhukov et al.

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Short summary
We studied spin dynamics in nuclear spin systems at low magnetic fields, where strong coupling among nuclear spins of the same kind, here 13C, is expected. Such conditions are known to be favorable for coherent polarization transfer. However, to our surprise, interactions with other nuclei, i.e., protons, lead to a breakdown of the strong coupling conditions. By using a two-field nuclear magnetic resonance approach, we can manipulate low field-spin dynamics and reintroduce strong coupling.