Details

Autor(en) / Beteiligte

• Pravdivtsev, Andrey N
• Ellermann, Frowin
• Hövener, Jan-Bernd

Titel

Selective excitation doubles the transfer of parahydrogen-induced polarization to heteronuclei

Ist Teil von

• Physical chemistry chemical physics : PCCP, 2021-07, Vol.23 (26), p.14146-1415

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In this work, we present a new pulse sequence to transform the spin order added to a molecule after the pairwise addition of parahydrogen into 13 C polarization. Using a selective 90° preparation instead of a non-selective 45° excitation, the new variant performed twice as well as previous implementations in both simulations and experiments, exemplified with hyperpolarized ethyl acetate. This concept is expected to extend to other nuclei and other spin order transfer schemes that use non-selective excitation. The selective parahydrogen excitation results in two times higher 13 C polarization.