Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 22, Issue 31, Pages 10777-10781Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201602393
Keywords
amino acids; homogeneous catalysis; imaging agents; iridium; NMR spectroscopy
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Funding
- NSF [CHE-1363008]
- Duke University
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1363008] Funding Source: National Science Foundation
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NMR with thermal polarization requires relatively concentrated samples, particularly for nuclei with low abundance and low gyromagnetic ratios, such as N-15. We expand the substrate scope of SABRE, a recently introduced hyperpolarization method, to allow access to N-15-enriched Schiff bases. These substrates show fractional N-15 polarization levels of up to 2% while having only minimal H-1 enhancements.
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