Publication Date

10-2017

Department

Chemistry; Ames Laboratory

Campus Units

Chemistry, Ames Laboratory

DOI

10.1016/j.ssnmr.2017.08.002

Journal Title

Solid State Nuclear Magnetic Resonance

Volume Number

87

First Page

38

Last Page

44

Abstract

We demonstrate that the dynamic nuclear polarization (DNP)-enhanced 1H-X heteronuclear correlation (HETCOR) measurements of surface species are better accomplished by using proton-free solvents. This approach notably prevents HETCOR spectra from being obfuscated by the solvent-derived signals otherwise present in DNP measurements. Additionally, in the hydrogen-rich materials studied here, which included functionalized mesoporous silica nanoparticles and metal organic frameworks, the use of proton-free solvents afforded higher sensitivity gains than the commonly used solvents containing protons. We also explored the possibility of using a solvent-free sample formulation and the feasibility of indirect detection in DNP-enhanced HETCOR experiments.

DOE Contract Number(s)

AC02-07CH11358

Department of Energy Subject Categories

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Publisher

Iowa State University Digital Repository, Ames IA (United States)

Available for download on Sunday, August 12, 2018

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