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  Complete magnetic field dependence of SABRE-derived polarization

Kiryutin, A. S., Yurkovskaya, A. V., Zimmermann, H., Vieth, H., & Ivanov, K. L. (2018). Complete magnetic field dependence of SABRE-derived polarization. Magnetic Resonance in Chemistry, 56, 651-662. doi:10.1002/mrc.4694.

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MagResonChem_56_2018_651.pdf (beliebiger Volltext), 3MB
 
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 Urheber:
Kiryutin, Alexey S., Autor
Yurkovskaya, Alexandra V., Autor
Zimmermann, Herbert1, Autor           
Vieth, Hans‐Martin, Autor
Ivanov, Konstantin L., Autor
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1Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              

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 Zusammenfassung: Signal amplification by reversible exchange (SABRE) is a promising hyperpolarization technique, which makes use of spin-order transfer from parahydrogen (the H2 molecule in its singlet spin state) to a to-be-polarized substrate in a transient organometallic complex, termed the SABRE complex. In this work, we present an experimental method for measuring the magnetic field dependence of the SABRE effect over an ultrawide field range, namely, from 10 nT to 10 T. This approach gives a way to determine the complete magnetic field dependence of SABRE-derived polarization. Here, we focus on SABRE polarization of spin-1/2 hetero-nuclei, such as 13 C and 15 N and measure their polarization in the entire accessible field range; experimental studies are supported by calculations of polarization. Features of the field dependence of polarization can be attributed to level anticrossings in the spin system of the SABRE complex. Features at magnetic fields of the order of 100 nT-1 μT correspond to "strong coupling" of protons and hetero-nuclei, whereas features found in the mT field range stem from "strong coupling" of the proton system. Our approach gives a way to measuring and analyzing the complete SABRE field dependence, to probing NMR parameters of SABRE complexes and to optimizing the polarization value.

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Sprache(n): eng - English
 Datum: 2017-11-092017-09-152017-11-292017-12-122018-07-01
 Publikationsstatus: Erschienen
 Seiten: 12
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Titel: Magnetic Resonance in Chemistry
  Kurztitel : Magn. Reson. Chem.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Hoboken, N.Y., USA : John Wiley & Sons
Seiten: - Band / Heft: 56 Artikelnummer: - Start- / Endseite: 651 - 662 Identifikator: ISSN: 0749-1581
CoNE: https://pure.mpg.de/cone/journals/resource/954928503544