It is shown that a direct spectral optimization scheme can be implemented to obtain improved heteronuclear dipolar decoupling schemes for solid-state magic-angle-spinning NMR experiments. The resulting schemes, which turn out to have a particularly simple form, are shown to be applicable over the whole range of commercially available spinning speeds (from 5 to 35 kHz), and are shown to improve on the performance of the best existing sequences. (C) 2003 Elsevier Science B.V. All rights reserved.
Rolf Gruetter, Lijing Xin, Hanne Frenkel
Geoffrey Bodenhausen, Simone Cavadini, Simone Ulzega