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Rational design of dinitroxide biradicals for efficient cross-effect dynamic nuclear polarization† †Electronic supplementary information (ESI) available: Additional experimental details, sample compositions and synthetic routes of radicals. See DOI: 10.1039/c5sc02921j ‡These authors contributed equa
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kubicki, Dominik Józef Casano, Gilles Schwarzwälder, Martin Abel, Sébastien Sauvée, Claire Ganesan, Karthikeyan Yulikov, Maxim Rossini, Aaron J. Jeschke, Gunnar Copéret, Christophe Lesage, Anne Tordo, Paul Ouari, Olivier Emsley, Lyndon |
| Copyright Year | 2016 |
| Abstract | A series of 37 dinitroxide biradicals have been prepared and their performance studied as polarizing agents in cross-effect DNP NMR experiments at 9.4 T and 100 K in 1,1,2,2-tetrachloroethane (TCE). We observe that in this regime the DNP performance is strongly correlated with the substituents on the polarizing agents, and electron and nuclear spin relaxation times, with longer relaxation times leading to better enhancements. We also observe that deuteration of the radicals generally leads to better DNP enhancement but with longer build-up time. One of the new radicals introduced here provides the best performance obtained so far under these conditions. |
| Starting Page | 550 |
| Ending Page | 558 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/c5sc02921j |
| PubMed reference number | 29896347 |
| Journal | Medline |
| Volume Number | 7 |
| Alternate Webpage(s) | https://pubs.rsc.org/en/content/articlepdf/2016/sc/c5sc02921j |
| Alternate Webpage(s) | https://hal-amu.archives-ouvertes.fr/hal-01387080/file/chemscience2016.7.550-558.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/c5sc02921j |
| Journal | Chemical science |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
