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Lloyd L. Lumata; Matthew E. Merritt; Craig R. Malloy; A. Dean Sherry; Johan Van Tol; Likai Song; Zoltan Kovacs(Profiled Authors: Zoltan Kovacs; Craig R Malloy; Matthew E Merritt; Dean Sherry)
Journal of Magnetic Resonance. 2013;227:14-19.Abstract
The goal of this work was to test feasibility of using galvinoxyl (2,6-di-tert-butyl-α-(3,5-di-tert-butyl-4-oxo-2,5-cyclohexadien-1-ylidene) -p-tolyloxy) as a polarizing agent for dissolution dynamic nuclear polarization (DNP) NMR spectroscopy. We have found that galvinoxyl is reasonably soluble in ethyl acetate, chloroform, or acetone and the solutions formed good glasses when mixed together or with other solvents such as dimethyl sulfoxide. W-band electron spin resonance (ESR) measurements revealed that galvinoxyl has an ESR linewidth D intermediate between that of carbon-centered free radical trityl OX063 and the nitroxide-based 4-oxo-TEMPO, thus the DNP with galvinoxyl for nuclei with low gyromagnetic ratio γ such as 13C and 15N is expected to proceed predominantly via the thermal mixing process. The optimum radical concentration that would afford the highest 13C nuclear polarization (approximately 6% for [1- 13C]ethyl acetate) at 3.35 T and 1.4 K was found to be around 40 mM. After dissolution, large liquid-state NMR enhancements were achieved for a number of 13C and 15N compounds with long spin-lattice relaxation time T
This section shows information related to the publication - computed using the fingerprint of the publication - including related publications, related experts with fingerprints representing significant amounts of overlap between their fingerprint and this publication. The red dots indicate whether those experts or terms appear within the publication, thereby showing potential and actual connections.
Lloyd Lumata; S. James Ratnakar; Ashish Jindal; Matthew Merritt; Arnaud Comment; Craig Malloy; A. Dean Sherry; Zoltan KovacsChemistry - A European Journal. 2011;17(39):10825-10827.
Lloyd Lumata; Matthew Merritt; Chalermchai Khemtong; S. James Ratnakar; Johan Van Tol; Lu Yu; Likai Song; Zoltan KovacsRSC Advances. 2012;2(33):12812-12817.
Lloyd Lumata; Matthew Merritt; Craig Malloy; A. Dean Sherry; Zoltan KovacsApplied Magnetic Resonance. 2012;43(1-2):69-79.
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