期刊
CHEMICAL COMMUNICATIONS
卷 56, 期 65, 页码 9336-9339出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0cc01330g
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资金
- National Institute of Biomedical Imaging and Bioengineering of the NIH [R21EB025313]
- NSF [CHE-1665090, CHE-1904780]
- Duke University
- NIH [1R21EB020323, 1R21CA220137]
- DOD CDMRP [W81XWH-12-1-0159/BC112431, W81XWH-15-1-0271]
Here we report on chelating ligands for Signal Amplification By Reversible Exchange (SABRE) catalysts that permit hyperpolarisation on otherwise sterically hindered substrates. We demonstrate(1)H enhancements of similar to 100-fold over 8.5 T thermal for 2-substituted pyridines, and smaller, yet significant enhancements for provitamin B(6)and caffeine. We also show(15)N-enhancements of similar to 1000-fold and(19)F-enhancements of 30-fold.
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