Abstract: Dynamic nuclear polarization (DNP) is routinely used as a method for increasing the sensitivity to nuclear magnetic resonance (NMR). Recently, high-field solid-effect DNP in viscous liquids on 1H nuclei was demonstrated using narrow-line polarizing agents. Here we expand the applicability of DNP in viscous media to 13C nuclei. To hyperpolarize 13C nuclei, we combined solid-effect 1H DNP with a subsequent transfer of the 1H polarization to 13C via insensitive nuclei enhanced by polarization transfer (INEPT). We demonstrate this approach using a triarylmethyl radical as a polarizing agent and glycerol-13C3 as an analyte. We achieved 13C enhancement factors of up to 45 at a magnetic field of 9.4 T and room temperature.

Cite: Dai D. , Denysenkov V. , Bagryanskaya E.G. , Tormyshev V.M. , Prisner T.F. , Kuzhelev A.A.
13C Hyperpolarization of Viscous Liquids by Transfer of Solid-Effect 1H Dynamic Nuclear Polarization at High Magnetic Field
Journal of Physical Chemistry Letters. 2023. V.14. N31. P.7059-7064. DOI: 10.1021/acs.jpclett.3c01732 WOS Scopus РИНЦ OpenAlex

Dates:

Submitted:	Jun 25, 2023
Accepted:	Jul 28, 2023
Published print:	Aug 1, 2023
Published online:	Aug 10, 2023

Identifiers:

Web of science:	WOS:001039025100001
Scopus:	2-s2.0-85167798269
Elibrary:	63600483
OpenAlex:	W4385442600

Citing:

DB	Citing
OpenAlex	2

Altmetrics: