Rapid acquisition of data dense solid-state CPMG NMR spectral sets using multi-dimensional statistical analysis

摘要: The development of multi-dimensional statistical methods has been demonstrated on variable contact time (VCT) 29Si{1H} cross-polarization magic angle spinning (CP/MAS) data sets collected using Carr–Purcell–Meiboom–Gill (CPMG) type acquisition. These utilize the transformation 2D VCT set into a 3D and use tensor-rank decomposition to extract spectral components that vary as function transverse relaxation (T2) CP time. result is dense can be used reconstruct CP/MAS spectra at any with high signal noise ratio an excellent agreement conventional CPMG in fraction would required collect set. We demonstrate method samples functionalized mesoporous silica materials show provide valuable surface specific information about their functional chemistry.