Benzoquinone Enhances Hyperpolarization of Surface Alcohols with Para-Hydrogen.

ABSTRACT: The nuclear singlet state of H₂, para-hydrogen, can be used to increase the measurable signal-to-noise for magnetic resonance techniques─a form of hyperpolarization. Transfer of this polarization from para-hydrogen to alcohols through surface interactions rather than formal hydrogenation has only been demonstrated on heterogeneous catalysts tailored to minimize loss of spin order. Here, we find that a common platinum-on-carbon catalyst is capable of this interaction and that the addition of a benzoquinone significantly increases the signal output of hyperpolarized methanol or water.

SUBMITTER: Norcott PL 

PROVIDER: S-EPMC10176463 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature