Dynamic nuclear polarization of (17)O was studied using four different polarizing agents: the biradical TOTAPOL and the monoradicals trityl and SA-BDPA, as well as a mixture of the latter two. Field profiles, DNP mechanisms, and enhancements were measured to better understand and optimize directly polarizing this low-gamma quadrupolar nucleus using both mono- and biradical polarizing agents. Enhancements were recorded at 100 using the trityl (OX063) radical and 10 000-fold savings in acquisition time enabled a series of biologically relevant small molecules to be studied with small sample sizes and the measurement of various quadrupolar parameters. The results are discussed with comparison to room temperature studies and GIPAW quantum chemical calculations. These experimental results illustrate the strength of high field DNP and the importance of radical selection for studying low-gamma nuclei.
Dynamic nuclear polarization of spherical nanoparticles
From The DNP-NMR Blog:
Dynamic nuclear polarization of spherical nanoparticles
Akbey, U., et al., Dynamic nuclear polarization of spherical nanoparticles. Phys Chem Chem Phys, 2013. 15(47): p. 20706-16.
http://www.ncbi.nlm.nih.gov/pubmed/24192797
First tests of a 527 GHz gyrotron for dynamic nuclear polarization
From The DNP-NMR Blog:
First tests of a 527 GHz gyrotron for dynamic nuclear polarization
Felch, K., et al. First tests of a 527 GHz gyrotron for dynamic nuclear polarization. in Vacuum Electronics Conference (IVEC), 2013 IEEE 14th International. 2013.
http://dx.doi.org/10.1109/IVEC.2013.6571048
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09-02-2013 10:45 PM
Dynamic Nuclear Polarization Enhanced NMR in the Solid-State
From The DNP-NMR Blog:
Dynamic Nuclear Polarization Enhanced NMR in the Solid-State
Akbey, Ü., et al., Dynamic Nuclear Polarization Enhanced NMR in the Solid-State. 2013, Springer Berlin Heidelberg. p. 1-48.
http://dx.doi.org/10.1007/128_2013_436
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08-26-2013 08:46 PM
[NMR paper] Dynamic Nuclear Polarization Enhanced NMR in the Solid-State.
Dynamic Nuclear Polarization Enhanced NMR in the Solid-State.
Dynamic Nuclear Polarization Enhanced NMR in the Solid-State.
Top Curr Chem. 2013 Jul 7;
Authors: Akbey U, Franks WT, Linden A, Rydmark MO, Lange S, Oschkinat H
Abstract
Nuclear magnetic resonance (NMR) spectroscopy is one of the most commonly used spectroscopic techniques to obtain information on the structure and dynamics of biological and chemical materials. A variety of samples can be studied including solutions, crystalline solids, powders and hydrated protein...
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07-09-2013 02:47 PM
High Frequency Dynamic Nuclear Polarization
From The DNP-NMR Blog:
High Frequency Dynamic Nuclear Polarization
Ni, Q.Z., et al., High Frequency Dynamic Nuclear Polarization. Acc Chem Res, 2013.
http://www.ncbi.nlm.nih.gov/pubmed/23597038
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06-07-2013 10:42 PM
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
Dynamic nuclear polarization of (17)o: direct polarization
Linear Mode
