Dissolution dynamic nuclear polarization (D-DNP) has become a method of choice to enhance signals in nuclear magnetic resonance (NMR). Recently, we have proposed to combine cross-polarization (CP) with D-DNP to provide high polarization P(13C) in short build-up times. In this paper, we show that switching microwave irradiation off for a few hundreds of milliseconds prior to CP can significantly boost the efficiency. By implementing microwave gating, 13C polarizations on sodium [1-13C]acetate as high as 64% could be achieved with a polarization build-up time constant as short as 160 s. A polarization of P(13C) = 78% could even be reached for [13C]urea.
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Phenylazide Hybrid-Silica - Polarization Platform for Dynamic Nuclear Polarization at Cryogenic Temperatures #DNPNMR
From The DNP-NMR Blog:
Phenylazide Hybrid-Silica - Polarization Platform for Dynamic Nuclear Polarization at Cryogenic Temperatures #DNPNMR
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Grüning, W.R., et al., Phenylazide Hybrid-Silica - Polarization Platform for Dynamic Nuclear Polarization at Cryogenic Temperatures. Helvetica Chimica Acta, 2016: p. n/a-n/a.
http://dx.doi.org/10.1002/hlca.201600122
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11-19-2016 08:35 PM
Hyperpolarization of Frozen Hydrocarbon Gases by Dynamic Nuclear Polarization at 1.2 K #DNPNMR
From The DNP-NMR Blog:
Hyperpolarization of Frozen Hydrocarbon Gases by Dynamic Nuclear Polarization at 1.2 K #DNPNMR
Vuichoud, B., et al., Hyperpolarization of Frozen Hydrocarbon Gases by Dynamic Nuclear Polarization at 1.2 K. J Phys Chem Lett, 2016. 7(16): p. 3235-9.
https://www.ncbi.nlm.nih.gov/pubmed/27483034
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09-22-2016 10:41 PM
Molecular Rationale for Improved Dynamic Nuclear Polarization of Biomembranes #DNPNMR
From The DNP-NMR Blog:
Molecular Rationale for Improved Dynamic Nuclear Polarization of Biomembranes #DNPNMR
Smith, A.N., et al., Molecular Rationale for Improved Dynamic Nuclear Polarization of Biomembranes. J Phys Chem B, 2016. 120(32): p. 7880-8.
https://www.ncbi.nlm.nih.gov/pubmed/27434371
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09-22-2016 10:41 PM
Dynamic nuclear polarization at 40 kHz magic angle spinning #DNPNMR
From The DNP-NMR Blog:
Dynamic nuclear polarization at 40 kHz magic angle spinning #DNPNMR
Chaudhari, S.R., et al., Dynamic nuclear polarization at 40 kHz magic angle spinning. Phys Chem Chem Phys, 2016. 18(15): p. 10616-22.
http://www.ncbi.nlm.nih.gov/pubmed/27035630
Essentials of Dynamic Nuclear Polarization #DNPNMR
From The DNP-NMR Blog:
Essentials of Dynamic Nuclear Polarization #DNPNMR
Dear Colleague,
It is my pleasure to announce that a limited edition of
`Essentials of Dynamic Nuclear Polarization'
is now available at the UK branch of Amazon: www.amazon.co.uk
nmrlearner
News from NMR blogs
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05-25-2016 02:30 AM
Microwave frequency modulation to enhance Dissolution Dynamic Nuclear Polarization
From The DNP-NMR Blog:
Microwave frequency modulation to enhance Dissolution Dynamic Nuclear Polarization
Bornet, A., et al., Microwave frequency modulation to enhance Dissolution Dynamic Nuclear Polarization. Chem. Phys. Lett., 2014. 602: p. 63-67.
http://www.sciencedirect.com/science/article/pii/S0009261414002826
nmrlearner
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01-04-2016 07:49 PM
Microwave frequency modulation to enhance Dissolution Dynamic Nuclear Polarization
From The DNP-NMR Blog:
Microwave frequency modulation to enhance Dissolution Dynamic Nuclear Polarization
Bornet, A., J. Milani, B. Vuichoud, A.J. Perez Linde, G. Bodenhausen, and S. Jannin, Chem. Phys. Lett., 602, (2014)
http://www.sciencedirect.com/science/article/pii/S0009261414002826
Microwave-gated dynamic nuclear polarization #DNPNMR
Linear Mode
