Rational design of dinitroxide biradicals for efficient cross-effect dynamic nuclear polarization

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.
Type de document :
Article dans une revue
Chemical Science , The Royal Society of Chemistry, 2016, 7 (1), pp.550 - 558. 〈10.1039/C5SC02921J〉
Liste complète des métadonnées

Littérature citée [57 références]  Voir  Masquer  Télécharger

https://hal-amu.archives-ouvertes.fr/hal-01387080
Contributeur : Emilie Pepe <>
Soumis le : mardi 25 octobre 2016 - 10:34:36
Dernière modification le : jeudi 8 février 2018 - 11:10:27

Fichier

chemscience2016.7.550-558.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

Citation

Dominik Kubicki, Gilles Casano, Martin Schwarzwälder, Sebastien Abel, Claire Sauvée, et al.. Rational design of dinitroxide biradicals for efficient cross-effect dynamic nuclear polarization. Chemical Science , The Royal Society of Chemistry, 2016, 7 (1), pp.550 - 558. 〈10.1039/C5SC02921J〉. 〈hal-01387080〉

Partager

Métriques

Consultations de la notice

196

Téléchargements de fichiers

150