Molecular hydrophobic cavities can be mapped thanks to the detection of magnetization transfer from laser polarized xenon to nearby protons. This so called SPINOE approach is described. The study of the spin dynamics during this experiment and its consequences on the practical implementation are detailed. We show that thanks to the knowledge of the physical properties of the system, it becomes possible to choose the best experimental conditions in order to be able to assign magnetization transfer through two dimensional NMR methods. As an illustration, the first 2D SPIROE-TOCSY experiment is reported. To cite this article: L. Dubois et al., C. R. Physique 5 (2004).
Les regions moleculaires hydrophobes peuvent etre localisees par l'approche appelee SPINOE qui consiste en la detection des transferts d'aimantation du xenon polarise par laser dissous vers les protons proches du solute. Nous rapportons l'etude de la dynamique presente lors de cette experience et discutons les consequences sur son implementation. Nous montrons que la connaissance des proprietes physico-chimiques du systeme permet de choisir les meilleures conditions experimentales afin d'etre capable d'identifier les transferts d'aimantation via des experiences de RMN a deux dimensions. Nous illustrons ce resultat par le premier spectre de SPIROE-TOCSY. Pour citer cet article : L. Dubois et al., C. R. Physique 5 (2004).