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Rapid 13C NMR hyperpolarization delivered from para-hydrogen enables the low concentration detection and quantification of sugars† †Electronic supplementary information (ESI) available: NMR data used in this manuscript. See DOI: 10.1039/c9sc03450a
| Content Provider | Semantic Scholar |
|---|---|
| Author | Richardson, Peter M. Iali, Wissam Roy, Soumya S. Rayner, Peter J. Halse, Meghan E. Duckett, Simon B. |
| Copyright Year | 2019 |
| Abstract | Monosaccharides, such as glucose and fructose, are important to life. In this work we highlight how the rapid delivery of improved 13C detectability for sugars by nuclear magnetic resonance (NMR) can be achieved using the para-hydrogen based NMR hyperpolarization method SABRE-Relay (Signal Amplification by Reversible Exchange-Relay). The significant 13C signal enhancements of 250 at a high field of 9.4 T, and 3100 at a low field of 1 T, enable the detection of trace amounts of these materials as well as the quantification of their tautomeric makeup. Using studies on 13C and 2H isotopically labelled agents we demonstrate how hyperpolarization lifetime (T 1) values can be extended, and how singlet states with long lifetimes can be created. The precise quantification of d-glucose-13C6-d 7 at the millimolar concentration level is shown to be possible within minutes in conjunction with a linear hyperpolarized response as a function of concentration. In addition to the measurements using labelled materials, low concentration detection is also illustrated for millimolar samples with natural abundance 13C where isomeric form quantification can be achieved with a single transient. |
| Starting Page | 10607 |
| Ending Page | 10619 |
| Page Count | 13 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/c9sc03450a |
| PubMed reference number | 32110347 |
| Journal | Medline |
| Volume Number | 10 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c9/sc/c9sc03450a/c9sc03450a1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/c9sc03450a |
| Journal | Chemical science |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |