Improved strategies for DNP-enhanced 2D 1H-X heteronuclear correlation spectroscopy of surfaces #DNPNMR
From The DNP-NMR Blog:
Improved strategies for DNP-enhanced 2D 1H-X heteronuclear correlation spectroscopy of surfaces #DNPNMR p.p1 {margin: 0.0px 0.0px 0.0px 36.0px; text-indent: -36.0px; font: 12.0px Helvetica} Kobayashi, T., et al., Improved strategies for DNP-enhanced 2D 1H-X heteronuclear correlation spectroscopy of surfaces. Solid State Nucl Magn Reson, 2017. 87(Supplement C): p. 38-44. https://www.ncbi.nlm.nih.gov/pubmed/28834782 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. p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica} p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica} Go to The DNP-NMR Blog for more info. |
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