Enhancing the NMR signals of plant oil components using hyperpolarisation relayed via proton exchange.

ABSTRACT: In this work, the limited sensitivity of magnetic resonance is addressed by using the hyperpolarisation method relayed signal amplification by reversible exchange (SABRE-Relay) to transfer latent magnetism from para-hydrogen, a readily isolated spin isomer of hydrogen gas, to components of key plant oils such as citronellol, geraniol, and nerol. This is achieved via relayed polarisation transfer in which an [Ir(H)₂(IMes)(NH₂R)₃]Cl type complex produces hyperpolarised NH₂R free in solution, before labile proton exchange between the hyperpolarisation carrier (NH₂R) and the OH-containing plant oil component generates enhanced NMR signals for the latter. Consequently, up to ca. 200-fold ¹H (0.65% ¹

SUBMITTER: Alshehri A 

PROVIDER: S-EPMC10510812 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature