Lumata, L., M.E. Merritt, and Z. Kovacs, Influence of deuteration in the glassing matrix on 13C dynamic nuclear polarization. Phys. Chem. Chem. Phys., 2013. 15(19): p. 7032-7035.
Replacement of protons by deuterons in the glassing solvents led to 2-3-fold improvement of the (13)C dynamic nuclear polarization (DNP) solid-state NMR signal for samples doped with large electron spin resonance (ESR) linewidth free radicals galvinoxyl, DPPH, and 4-oxo-TEMPO. Meanwhile, the reverse effect is observed for (13)C DNP using small ESR linewidth free radicals BDPA and trityl OX063.
Dynamic Nuclear Polarization Key Topic At 54th ENC Conference
From The DNP-NMR Blog:
Dynamic Nuclear Polarization Key Topic At 54th ENC Conference
Dynamic Nuclear Polarization Key Topic At 54thENC Conference
It was great to see many familiar faces at this year’s ENC Conference in beautiful Asilomar. For those who couldn’t make it this year, I’d like to summarize some key takeaways:
nmrlearner
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05-02-2013 01:10 AM
Dynamic Nuclear Polarization of Sedimented Solutes
From the The DNP-NMR Blog:
Dynamic Nuclear Polarization of Sedimented Solutes
Ravera, E., et al., Dynamic Nuclear Polarization of Sedimented Solutes. J. Am. Chem. Soc., 2013. 135(5): p. 1641-1644.
http://dx.doi.org/10.1021/ja312553b
nmrlearner
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04-15-2013 08:52 AM
Solid state nuclear magnetic resonance with magic-angle spinning and dynamic nuclear polarization below 25K
Solid state nuclear magnetic resonance with magic-angle spinning and dynamic nuclear polarization below 25K
January 2013
Publication year: 2013
Source:Journal of Magnetic Resonance, Volume 226</br>
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We describe an apparatus for solid state nuclear magnetic resonance (NMR) with dynamic nuclear polarization (DNP) and magic-angle spinning (MAS) at 20–25K and 9.4Tesla. The MAS NMR probe uses helium to cool the sample space and nitrogen gas for MAS drive and bearings, as described earlier , but also includes a corrugated waveguide for transmission of microwaves from...
nmrlearner
Journal club
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12-15-2012 09:51 AM
Solid state nuclear magnetic resonance with magic-angle spinning and dynamic nuclear polarization below 25 K
Solid state nuclear magnetic resonance with magic-angle spinning and dynamic nuclear polarization below 25 K
Available online 20 November 2012
Publication year: 2012
Source:Journal of Magnetic Resonance</br>
</br>
We describe an apparatus for solid state nuclear magnetic resonance (NMR) with dynamic nuclear polarization (DNP) and magic-angle spinning (MAS) at 20-25 K and 9.4 Tesla. The MAS NMR probe uses helium to cool the sample space and nitrogen gas for MAS drive and bearings, as described earlier (Thurber et al., J. Magn. Reson. 2008) , but also includes a...
nmrlearner
Journal club
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12-01-2012 06:10 PM
Solid state nuclear magnetic resonance with magic-angle spinning and dynamic nuclear polarization below 25 K
Solid state nuclear magnetic resonance with magic-angle spinning and dynamic nuclear polarization below 25 K
Publication year: 2012
Source:Journal of Magnetic Resonance</br>
Kent R. Thurber, Alexey Potapov, Wai-Ming Yau, Robert Tycko</br>
We describe an apparatus for solid state nuclear magnetic resonance (NMR) with dynamic nuclear polarization (DNP) and magic-angle spinning (MAS) at 20-25 K and 9.4 Tesla. The MAS NMR probe uses helium to cool the sample space and nitrogen gas for MAS drive and bearings, as described earlier (Thurber et al., J. Magn. Reson. 2008) ,...
nmrlearner
Journal club
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11-21-2012 04:33 AM
A 250 GHz Gyrotron with a 3 GHz Tuning Bandwidth for Dynamic Nuclear Polarization
A 250 GHz Gyrotron with a 3 GHz Tuning Bandwidth for Dynamic Nuclear Polarization
Publication year: 2012
Source:Journal of Magnetic Resonance</br>
Alexander B. Barnes, Emilio A. Nanni, Judith Herzfeld, Robert G. Griffin, Richard J. Temkin</br>
We describe the design and implementation of a novel tunable 250 GHz gyrotron oscillator with >10 W output power over most of a 3 GHz band and >35 W peak power. The tuning bandwidth and power are sufficient to generate a >1 MHz nutation frequency across the entire nitroxide EPR lineshape for cross effect DNP, as well as to...
nmrlearner
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03-30-2012 10:45 AM
Solution NMR of Polypeptides Hyperpolarized by Dynamic Nuclear Polarization.
Solution NMR of Polypeptides Hyperpolarized by Dynamic Nuclear Polarization.
Solution NMR of Polypeptides Hyperpolarized by Dynamic Nuclear Polarization.
Anal Chem. 2011 Jun 7;
Authors: Ragavan M, Chen HY, Sekar G, Hilty C
Hyperpolarization of nuclear spins through techniques such as Dynamic Nuclear Polarization (DNP) can greatly increase the signal to noise ratio in NMR measurements, thus eliminating the need for signal averaging. This enables the study of many dynamic processes which would otherwise not be amenable to study by NMR spectroscopy....
nmrlearner
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06-10-2011 11:52 AM
Dynamic nuclear polarization experiments at 14.1 T for solid-state NMR.
Dynamic nuclear polarization experiments at 14.1 T for solid-state NMR.
Related Articles Dynamic nuclear polarization experiments at 14.1 T for solid-state NMR.
Phys Chem Chem Phys. 2010 Jun 14;12(22):5799-803
Authors: Matsuki Y, Takahashi H, Ueda K, Idehara T, Ogawa I, Toda M, Akutsu H, Fujiwara T
Instrumentation for high-field dynamic nuclear polarization (DNP) at 14.1 T was developed to enhance the nuclear polarization for NMR of solids. The gyrotron generated 394.5 GHz submillimeter (sub-mm) wave with a power of 40 W in the second harmonic...
Influence of deuteration in the glassing matrix on 13C dynamic nuclear polarization
Linear Mode
