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J Phys Chem A. 2017 May 04;121(17):3227-3233. doi: 10.1021/acs.jpca.7b01844. Epub 2017 Apr 24.

Influence of .

The journal of physical chemistry. A

Peter Niedbalski, Christopher Parish, Andhika Kiswandhi, Zoltan Kovacs, Lloyd Lumata

Affiliations

  1. Department of Physics, University of Texas at Dallas , 800 West Campbell Road, Richardson, Texas 75080 United States.
  2. Advanced Imaging Research Center, University of Texas Southwestern Medical Center , 5323 Harry Hines Boulevard, Dallas, Texas 75390 United States.

PMID: 28422500 PMCID: PMC6260835 DOI: 10.1021/acs.jpca.7b01844

Abstract

Dynamic nuclear polarization (DNP) via the dissolution method has alleviated the insensitivity problem in liquid-state nuclear magnetic resonance (NMR) spectroscopy by amplifying the signals by several thousand-fold. This NMR signal amplification process emanates from the microwave-mediated transfer of high electron spin alignment to the nuclear spins at high magnetic field and cryogenic temperature. Since the interplay between the electrons and nuclei is crucial, the chemical composition of a DNP sample such as the type of free radical used, glassing solvents, or the nature of the target nuclei can significantly affect the NMR signal enhancement levels that can be attained with DNP. Herein, we have investigated the influence of

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