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2015 ; 253
(ä): 23-35
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Mechanisms of dynamic nuclear polarization in insulating solids
#MMPMID25797002
Can TV
; Ni QZ
; Griffin RG
J Magn Reson
2015[Apr]; 253
(ä): 23-35
PMID25797002
show ga
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.
|*Algorithms
[MESH]
|*Models, Chemical
[MESH]
|Electric Conductivity
[MESH]
|Nuclear Magnetic Resonance, Biomolecular/*methods
[MESH]