Gadolinium based endohedral metallofullerene Gd 2 @C 79 N as a relaxation boosting agent for dissolution DNP at high fields

We show increased dynamic nuclear polarization by adding a low dosage of a S = 15/2 Gd based endohedral metallofullerene (EMF) to DNP samples. By adding 60 μM Gd @C N, the nuclear polarization of H and C spins from 40 mM 4-oxo-TEMPO increases by approximately 40% and 50%, respectively, at 5 T and 1....

Full description

Saved in:
Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2018-03, Vol.54 (19), p.2425-2428
Main Authors: Wang, Xiaoling, McKay, Johannes E, Lama, Bimala, van Tol, Johan, Li, Tinghui, Kirkpatrick, Kyle, Gan, Zhehong, Hill, Stephen, Long, Joanna R, Dorn, Harry C
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We show increased dynamic nuclear polarization by adding a low dosage of a S = 15/2 Gd based endohedral metallofullerene (EMF) to DNP samples. By adding 60 μM Gd @C N, the nuclear polarization of H and C spins from 40 mM 4-oxo-TEMPO increases by approximately 40% and 50%, respectively, at 5 T and 1.2 K. Electron-electron double resonance (ELDOR) measurements show that the high spin EMF shortens the electron relaxation times and increases electron spectral diffusion leading to the increased DNP enhancement.
ISSN:1359-7345
1364-548X
DOI:10.1039/C7CC09765D