Selective excitation of hydrogen doubles the yield and improves the robustness of parahydrogen-induced polarization of low-γ nuclei.
Phys Chem Chem Phys
; 23(47): 26645-26652, 2021 Dec 08.
Article
in En
| MEDLINE
| ID: mdl-34846056
ABSTRACT
We describe a new method for pulsed spin order transfer of parahydrogen-induced polarization (PHIP) that enables high polarization in incompletely 2H-labeled molecules by exciting only the desired protons in a frequency-selective manner. This way, the effect of selected J-couplings is suspended. Experimentally 1.25% 13C polarization were obtained for 1-13C-ethyl pyruvate and 50% pH2 at 9.4 Tesla.
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MEDLINE
Language:
En
Year:
2021
Type:
Article