Articles | Volume 2, issue 1
https://doi.org/10.5194/mr-2-331-2021
https://doi.org/10.5194/mr-2-331-2021
Research article
 | 
19 May 2021
Research article |  | 19 May 2021

Determination of hydrogen exchange and relaxation parameters in PHIP complexes at micromolar concentrations

Lisanne Sellies, Ruud L. E. G. Aspers, and Marco Tessari

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Latest update: 21 Feb 2024
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Short summary
Reversible para-hydrogen-induced polarization (PHIP) is a technique to enhance NMR signals in solution, based on the association/dissociation of para-hydrogen and substrate molecules with/from an iridium catalyst. In this work we present an approach to measure NMR relaxation as well as rate constants of para-hydrogen association/dissociation with/from the iridium catalyst. These rates are important for understanding the different PHIP efficiencies observed for different substrate molecules.