Parallelizing acquisitions of solid-state NMR spectra with multi-channel probe and multi-receivers: applications to nanoporous solids.
A five-channel ((1)H, (19)F, (31)P, (27)Al, (13)C) 2.5 mm magic-angle-spinning (MAS) nuclear magnetic resonance (NMR) probe is used in combination with three separate receivers for the parallel acquisitions of one (1D) and two-dimensional (2D) NMR spectra in model fluorinated aluminophosphate and porous Al-based metal-organic framework (MOF). Possible combinations to record simultaneously spectra using this set-up are presented, including (i) parallel acquisitions of quantitative 1D NMR spectra of solids containing nuclei with contrasted T1 relaxation rates and (ii) parallel acquisitions of 2D heteronuclear NMR spectra. In solids containing numerous different NMR-accessible nuclei, the number of NMR experiments that have to be acquired to get accurate structural information is high. The strategy we present here, i.e. the multiplication of both the number of irradiation channels in the probe and the number of parallel receivers, offers one possibility to optimize this measurement time.
['Martineau|Charlotte|C|', 'Decker|Frank|F|', 'Engelke|Frank|F|', 'Taulelle|Francis|F|']
D000535:Aluminum D009682:Magnetic Resonance Spectroscopy D008958:Models, Molecular D008968:Molecular Conformation D049329:Nanostructures D010710:Phosphates D016062:Porosity D013223:Statistics as Topic
Solid-state NMR Aluminophosphate Metal-organic framework Adjacency matrix Multiple-irradiation probe Multiple-receivers NMR crystallography