Articles | Volume 3, issue 2
Research article
10 Aug 2022
Research article |  | 10 Aug 2022

Reverse dynamic nuclear polarisation for indirect detection of nuclear spins close to unpaired electrons

Nino Wili, Jan Henrik Ardenkjær-Larsen, and Gunnar Jeschke

Related authors

Using nutation-frequency-selective pulses to reduce radio-frequency field inhomogeneity in solid-state NMR
Kathrin Aebischer, Nino Wili, Zdeněk Tošner, and Matthias Ernst
Magn. Reson., 1, 187–195,,, 2020
Short summary
Distance measurement between trityl radicals by pulse dressed electron paramagnetic resonance with phase modulation
Nino Wili, Henrik Hintz, Agathe Vanas, Adelheid Godt, and Gunnar Jeschke
Magn. Reson., 1, 75–87,,, 2020
Short summary

Related subject area

Field: Hyperpolarization | Topic: Pulse-sequence development
Determination of hydrogen exchange and relaxation parameters in PHIP complexes at micromolar concentrations
Lisanne Sellies, Ruud L. E. G. Aspers, and Marco Tessari
Magn. Reson., 2, 331–340,,, 2021
Short summary
Dipolar order mediated 1H → 13C cross-polarization for dissolution-dynamic nuclear polarization
Stuart J. Elliott, Samuel F. Cousin, Quentin Chappuis, Olivier Cala, Morgan Ceillier, Aurélien Bornet, and Sami Jannin
Magn. Reson., 1, 89–96,,, 2020
Short summary

Cited articles

Bornet, A., Milani, J., Vuichoud, B., Perez Linde, A. J., Bodenhausen, G., and Jannin, S.: Microwave frequency modulation to enhance Dissolution Dynamic Nuclear Polarization, Chem. Phys. Lett., 602, 63–67,, 2014. a
Can, T. V., Walish, J. J., Swager, T. M., and Griffin, R. G.: Time domain DNP with the NOVEL sequence, J. Chem. Phys., 143, 054201,, 2015. a
Can, T. V., Weber, R. T., Walish, J. J., Swager, T. M., and Griffin, R. G.: Ramped-amplitude NOVEL, J. Chem. Phys., 146, 154204,, 2017. a
Chen, H., Maryasov, A. G., Rogozhnikova, O. Y., Trukhin, D. V., Tormyshev, V. M., and Bowman, M. K.: Electron spin dynamics and spin–lattice relaxation of trityl radicals in frozen solutions, Phys. Chem. Chem. Phys., 18, 24954–24965,, 2016. a
Doll, A. and Jeschke, G.: Wideband frequency-swept excitation in pulsed EPR spectroscopy, J. Magn. Reson., 280, 46–62,, 2017. a, b
Short summary
Dynamic nuclear polarisation (DNP) transfers polarisation from electron to nuclear spins. This is usually combined with direct detection of the latter. Here, we show that it is possible to reverse the transfer at 1.2 T. This allows us to investigate the spin dynamics of nuclear spins close to electrons – something that is notoriously difficult with established methods. We expect reverse DNP to be useful in the study of spin diffusion or as a building block for more elaborate pulse sequences.