Selective excitation of hydrogen doubles the yield and improves the robustness of parahydrogen-induced polarization of low-γ nuclei. Issue 47 (30th November 2021)

• Record Type: Journal Article
• Authors: Schmidt, Andreas B.; Brahms, Arne; Ellermann, Frowin; Knecht, Stephan; Berner, Stephan; Hennig, Jürgen; von Elverfeldt, Dominik; Herges, Rainer; Hövener, Jan-Bernd; Pravdivtsev, Andrey N.
• Is Part Of: Physical chemistry chemical physics. Volume 23:Issue 47(2021)
• Page Start: 26645
• Page End: 26652
• Publication Date: 2021-11-30
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/d1cp04153c
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : We describe a new method for pulsed spin order transfer of parahydrogen-induced polarization (PHIP) that enables high polarization in incompletely 2 H-labeled molecules by exciting only the desired protons in a frequency-selective manner. Abstract : We describe a new method for pulsed spin order transfer of parahydrogen-induced polarization (PHIP) that enables high polarization in incompletely 2 H-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% 13 C polarization were obtained for 1- 13 C-ethyl pyruvate and 50% pH2 at 9.4 Tesla.