Cox, N., Nalepa, A., Lubitz, W., and Savitsky, A.: ELDOR-detected NMR: A
general and robust method for electron-nuclear hyperfine spectroscopy?, J.
Magn. Reson., 280, 63–78, https://doi.org/10.1016/j.jmr.2017.04.006, 2017.
de Boer, W.: Dynamic orientation of nuclei at low temperatures, J. Low Temp.
Phys., 22, 185–212, https://doi.org/10.1007/BF00655221, 1976.
Florent, M., Kaminker, I., Nagarajan, V., and Goldfarb, D.: Determination of
the
14N quadrupole coupling constant of nitroxide spin probes by W-band
ELDOR-detected NMR, J. Magn. Reson., 210, 192–199,
https://doi.org/10.1016/j.jmr.2011.03.005, 2011.
Goldfarb, D., Lipkin, Y., Potapov, A., Gorodetsky, Y., Epel, B.,
Raitsimring, A. M., Radoul, M., and Kaminker, I.: HYSCORE and DEER with an
upgraded 95 GHz pulse EPR spectrometer, J. Magn. Reson., 194, 8–15,
https://doi.org/10.1016/j.jmr.2008.05.019, 2008.
Goldman, M.: Spin temperature and magnetic resonance in solids, edited by: Oxford Univ. Press, London, 1970.
Harris, T., Bretschneider, C., and Frydman, L.: Dissolution DNP NMR with
solvent mixtures: Substrate concentration and radical extraction, J. Magn.
Reson., 211, 96–100, https://doi.org/10.1016/j.jmr.2011.04.001, 2011.
Hovav, Y., Feintuch, A., and Vega, S.: Theoretical aspects of dynamic nuclear
polarization in the solid state – the solid effect., J. Magn. Reson.,
207, 176–189, https://doi.org/10.1016/j.jmr.2010.10.016, 2010.
Hovav, Y., Shimon, D., Kaminker, I., Feintuch, A., Goldfarb, D., and Vega,
S.: Effects of the electron polarization on dynamic nuclear polarization in
solids, Phys. Chem. Chem. Phys., 17, 6053–6065, https://doi.org/10.1039/C4CP05625F,
2015a.
Hovav, Y., Kaminker, I., Shimon, D., Feintuch, A., Goldfarb, D., and Vega,
S.: The electron depolarization during dynamic nuclear polarization:
Measurements and simulations, Phys. Chem. Chem. Phys., 17, 226–244,
https://doi.org/10.1039/c4cp03825h, 2015b.
Hovav, Y., Kaminker, I., Shimon, D., Feintuch, A., Goldfarb, D., and Vega,
S.: The electron depolarization during dynamic nuclear polarization:
Measurements and simulations, Phys. Chem. Chem. Phys., 17, 226–244,
https://doi.org/10.1039/c4cp03825h, 2015c.
Hwang, C. F. and Hill, D. A.: New Effect in Dynamic Polarization, Phys. Rev.
Lett., 18, 110–112, https://doi.org/10.1103/PhysRevLett.18.110, 1967.
Kaminker, I., Wilson, T. D., Savelieff, M. G., Hovav, Y., Zimmermann, H.,
Lu, Y., and Goldfarb, D.: Correlating nuclear frequencies by two-dimensional
ELDOR-detected NMR spectroscopy, J. Magn. Reson., 240, 77–89,
https://doi.org/10.1016/j.jmr.2013.12.016, 2014.
Kundu, K., Feintuch, A., and Vega, S.: Electron-Electron Cross-Relaxation and
Spectral Diffusion during Dynamic Nuclear Polarization Experiments on
Solids, J. Phys. Chem. Lett., 9, 1793–1802,
https://doi.org/10.1021/acs.jpclett.8b00090, 2018a.
Kundu, K., Ramirez-Cohen, M., Feintuch, A., Goldfarb, D., and Vega, S.:
Experimental Quantification of Electron Spectral-Diffusion under static DNP
conditions, Phys. Chem. Chem. Phys., 21, 478–489, https://doi.org/10.1039/C8CP05930F,
2018b.
Leavesley, A., Shimon, D., Siaw, T. A., Feintuch, A., Goldfarb, D., Vega,
S., Kaminker, I., and Han, S.: Effect of electron spectral diffusion on
static dynamic nuclear polarization at 7 Tesla, Phys. Chem. Chem. Phys.,
19, 3596–3605, https://doi.org/10.1039/c6cp06893f, 2017.
Leavesley, A., Jain, S., Kamniker, I., Zhang, H., Rajca, S., Rajca, A., and
Han, S.: Maximizing NMR signal per unit time by facilitating the e-e-n cross
effect DNP rate, Phys. Chem. Chem. Phys., 20, 27646–27657,
https://doi.org/10.1039/c8cp04909b, 2018.
Mentink-Vigier, F., Collauto, A., Feintuch, A., Kaminker, I., Tarle, V., and
Goldfarb, D.: Increasing sensitivity of pulse EPR experiments using echo
train detection schemes, J. Magn. Reson., 236, 117–125,
https://doi.org/10.1016/j.jmr.2013.08.012, 2013.
Nalepa, A., Möbius, K., Lubitz, W., and Savitsky, A.: High-field
ELDOR-detected NMR study of a nitroxide radical in disordered solids: Towards
characterization of heterogeneity of microenvironments in spin-labeled
systems, J. Magn. Reson., 242, 203–213, 2014.
Nalepa, A., Möbius, K., Plato, M., Lubitz, W., and Savitsky, A.:
Nitroxide Spin Labels – Magnetic Parameters and Hydrogen-Bond Formation: A
High-Field EPR and EDNMR Study, Appl. Magn. Reson., 50, 0123456789,
https://doi.org/10.1007/s00723-018-1073-3, 2018.
Provotorov, B. N.: Magnetic resonance saturation in crystals, Sov. Phys.
JETP, 14, 1126–1131, 1962.
Ramirez Cohen, M., Mendelman, N., Radoul, M., Wilson, T. D., Savelieff, M.
G., Zimmermann, H., Kaminker, I., Feintuch, A., Lu, Y., and Goldfarb, D.:
Thiolate Spin Population of Type I Copper in Azurin Derived from
33S
Hyperfine Coupling, Inorg. Chem., 56, 6163–6174,
https://doi.org/10.1021/acs.inorgchem.7b00167, 2017.
Rapatskiy, L., Cox, N., Savitsky, A., Ames, W. M., Sander, J., Nowaczyk, M.
M., Rögner, M., Boussac, A., Neese, F., Messinger, J., and Lubitz, W.:
Detection of the water-binding sites of the oxygen-evolving complex of
photosystem II using W-band
17O electron-electron double resonance-detected
NMR spectroscopy, J. Am. Chem. Soc., 134, 16619–16634,
https://doi.org/10.1021/ja3053267, 2012.
Shimon, D., Hovav, Y., Feintuch, A., Goldfarb, D., and Vega, S.: Dynamic
Nuclear Polarization in the solid state: a transition between the cross
effect and the solid effect, Phys. Chem. Chem. Phys., 14, 5729–5743,
https://doi.org/10.1039/c2cp23915a, 2012.
Shimon, D., Feintuch, A., Goldfarb, D., and Vega, S.: Static
1H dynamic
nuclear polarization with the biradical TOTAPOL: a transition between the
solid effect and the cross effect, Phys. Chem. Chem. Phys., 16,
6687–6699, https://doi.org/10.1039/c3cp55504f, 2014.
Siaw, T. A., Fehr, M., Lund, A., Latimer, A., Walker, S. A., Edwards, D. T., and Han, S. I.: Effect of electron spin dynamics on solid-state dynamic
nuclear polarization performance, Phys. Chem. Chem. Phys., 16,
18694–18706, https://doi.org/10.1039/c4cp02013h, 2014.
Stoll, S. and Schweiger, A.: EasySpin, a comprehensive software package for
spectral simulation and analysis in EPR, J. Magn. Reson., 178, 42–55,
https://doi.org/10.1016/j.jmr.2005.08.013, 2006.
Tan, K. O., Yang, C., Weber, R. T., Mathies, G., and Griffin, R. G.:
Time-optimized pulsed dynamic nuclear polarization, Sci. Adv., 5, 1–8,
https://doi.org/10.1126/sciadv.aav6909, 2019.
Thankamony, A. S. L., Wittmann, J. J., Kaushik, M., and Corzilius, B.:
Dynamic nuclear polarization for sensitivity enhancement in modern
solid-state NMR, Prog. Nucl. Magn. Reson. Spectrosc., 102–103, 120–195,
https://doi.org/10.1016/j.pnmrs.2017.06.002, 2017.
Wang, X., McKay, J. E., Lama, B., Van Tol, J., Li, T., Kirkpatrick, K., Gan,
Z., Hill, S., Long, J. R., and Dorn, H. C.: Gadolinium based endohedral
metallofullerene Gd
2@C
79N as a relaxation boosting agent for dissolution DNP
at high fields, Chem. Commun., 54, 2425–2428, https://doi.org/10.1039/c7cc09765d,
2018.
Weber, E. M. M., Vezin, H., Kempf, J. G., Bodenhausen, G., Abergél, D., and Kurzbach, D.: Anisotropic longitudinal electronic relaxation affects DNP
at cryogenic temperatures, Phys. Chem. Chem. Phys., 19, 16087–16094,
https://doi.org/10.1039/c7cp03242k, 2017.
Wenckebach, T.: Essentials of Dynamic Nuclear Polarization, Spindrift
Publications, the Netherlands, 2016.
Wili, N. and Jeschke, G.: Chirp echo Fourier transform EPR-detected NMR, J.
Magn. Reson., 289, 26–34, https://doi.org/10.1016/j.jmr.2018.02.001, 2018.
Wollan, D. S.: Dynamic Nuclear Polarization with an inhomogeneously
breoadened ESR line, I. Theory, Phys. Rev. B, 13, 3671–3685, 1976.