The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 2014
Filed:
May. 29, 2009
Olivier Ouari, Seynod, FR;
Hakim Karoui, Marseille, FR;
Francois Le Moigne, Marseille, FR;
Paul Tordo, Marseille, FR;
Robert G. Griffin, Newton, MA (US);
Yoh Matsuki, Osaka, JP;
Thorsten Maly, Cambridge, MA (US);
Olivier Ouari, Seynod, FR;
Hakim Karoui, Marseille, FR;
Francois Le Moigne, Marseille, FR;
Paul Tordo, Marseille, FR;
Robert G. Griffin, Newton, MA (US);
Yoh Matsuki, Osaka, JP;
Thorsten Maly, Cambridge, MA (US);
Universite d'Aix Marseille, , FR;
Abstract
The present invention relates to the field of organic chemistry and in particular to organic free radicals used as polarizing agents in the technique of Dynamic Nuclear Polarization (DNP), which involves transferring the polarization of electron spins to the nuclei of a compound whose Nuclear Magnetic Resonance (NMR) is being observed. It concerns dinitroxide-type biradical polarizing agents characterized by a rigid linkage between the nitroxide units that enables optimal orientation and distance to be maintained between the aminoxyl groups of said nitroxide units. This particular structure enables, at low temperatures and high fields, optimal transfer of polarization and optimal enhancement of NMR/MAS signals of the polarized nuclei of the compound studied.