High-field NMR with dissolution triplet-DNP
Abstract
Dissolution dynamic nuclear polarization (DNP) has wide variety of important applications such as real-time monitoring of chemical reactions and metabolic imaging. We construct DNP using photoexcited triplet electron spins (Triplet-DNP) apparatus combined with dissolution apparatus for solution NMR in a high magnetic field. Triplet-DNP enables us to obtain high nuclear polarization at room temperature. Solid-state samples polarized by Triplet-DNP are transferred to a superconducting magnet and dissolved by injecting aqueous solvents. The 13C polarization of 0.22% has been obtained for [caryboxy-13C]benzoic acid-d in the liquid state. Our results show that Triplet-DNP can be applied to real-time monitoring with solution NMR.
- Publication:
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Journal of Magnetic Resonance
- Pub Date:
- December 2019
- DOI:
- 10.1016/j.jmr.2019.106623
- Bibcode:
- 2019JMagR.30906623K
- Keywords:
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- Dissolution-DNP;
- Triplet electron spin;
- High polarization