Accurate pH sensing via hyperpolarized $^{129}$Xe NMR

Patrick Berthault 1, * Estelle Léonce 1 Jean-Pierre Dognon 1 Delphine Pitrat 2 Jean-Christophe Mulatier 2 Thierry Brotin 2
* Corresponding author
1 LSDRM - Laboratoire Structure et Dynamique par Résonance Magnétique (LCF)
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
Abstract : In the search for powerful non-invasive methods for pH measurement, NMR usually suffers from biases, especially for heterogeneous samples or tissues. In this Communication, using the signals of hyperpolarized $^{129}$Xe encapsulated in a pair of water-soluble cryptophanes, we show that a differential pH measurement can be achieved, free from most of these biases, by monitoring the difference between their chemical shifts.
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Patrick Berthault, Estelle Léonce, Jean-Pierre Dognon, Delphine Pitrat, Jean-Christophe Mulatier, et al.. Accurate pH sensing via hyperpolarized $^{129}$Xe NMR. Chemistry - A European Journal, Wiley-VCH Verlag, In press, 24, pp.6534-6537. ⟨10.1002/chem.201800900⟩. ⟨cea-01720386⟩

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