Mechanisms of dynamic nuclear polarization in insulating solids
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Griffin_Mechanisms of dynamic.pdf
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1.13 MB
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Checksum (MD5)
8e81ec0a5ba1b7f63165e43b5be9c0fa
Author(s)
Ni, Qing Zhe
Griffin, Robert Guy
Can, Thach V
Date Issued
March 2015
Journal
Journal of Magnetic Resonance
Publisher
Elsevier
Citation
Can, T.V.; Ni, Q.Z. and Griffin, R.G. “Mechanisms of Dynamic Nuclear Polarization in Insulating Solids.” Journal of Magnetic Resonance 253 (April 2015): 23–35. © 2015 Elsevier Inc
Version
Author's final manuscript
Abstract
Dynamic nuclear polarization (DNP) is a technique used to enhance signal intensities in NMR experiments by transferring the high polarization of electrons to their surrounding nuclei. The past decade has witnessed a renaissance in the development of DNP, especially at high magnetic fields, and its application in several areas including biophysics, chemistry, structural biology and materials science. Recent technical and theoretical advances have expanded our understanding of established experiments: for example, the cross effect DNP in samples spinning at the magic angle. Furthermore, new experiments suggest that our understanding of the Overhauser effect and its applicability to insulating solids needs to be re-examined. In this article, we summarize important results of the past few years and provide quantum mechanical explanations underlying these results. We also discuss future directions of DNP and current limitations, including the problem of resolution in protein spectra recorded at 80–100 K.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology)
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Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1016/j.jmr.2015.02.005
