Not a solid-state NMR article, but a very neat result from Malcolm Levitt's group.
Web Release Date: August 26,
The Long-Lived Nuclear Singlet State of 15N-Nitrous Oxide in Solution
Received May 14, 2008
A 15N nuclear singlet lifetime of over 26 min has been observed in a solution of 15N2O, by using a field-cycling NMR pulse sequence. This observation suggests applications of hyperpolarized 15N2O in medical imaging and for flow and diffusion studies.