Improved strategies for DNP-enhanced 2D 1H-X heteronuclear correlation spectroscopy of surfaces

Date
2017-10-01
Authors
Kobayashi, Takeshi
Perras, Frédéric
Chaudhary, Umesh
Slowing, Igor
Huang, Wenyu
Sadow, Aaron
Pruski, Merek
Journal Title
Journal ISSN
Volume Title
Publisher
Altmetrics
Authors
Research Projects
Organizational Units
Ames Laboratory
Organizational Unit
Chemistry
Organizational Unit
Journal Issue
Series
Abstract

We demonstrate that dynamic nuclear polarization (DNP)-enhanced 1H-X heteronuclear correlation (HETCOR) measurements of hydrogen-rich 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.

Description

This is an article from Kobayashi, Takeshi, Frédéric A. Perras, Umesh Chaudhary, Igor I. Slowing, Wenyu Huang, Aaron D. Sadow, and Marek Pruski. "Improved strategies for DNP-enhanced 2D 1 HX heteronuclear correlation spectroscopy of surfaces." Solid State Nuclear Magnetic Resonance (2017). doi: 10.1016/j.ssnmr.2017.08.002. Posted with permission.

Keywords
Citation
DOI
Collections