QCPMG-MAS NMR of half-integer quadrupolar nuclei

被引：115

作者：

Larsen, FH

Jakobsen, HJ

Ellis, PD

Nielsen, NC ^{[1
]}

机构：

[1] Aarhus Univ, Dept Chem, Instrument Ctr Solid State NMR Spect, DK-8000 Aarhus C, Denmark

[2] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA

来源：

JOURNAL OF MAGNETIC RESONANCE | 1998年 / 131卷 / 01期

关键词：

D O I：

10.1006/jmre.1997.1341

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

By combination of fast magic-angle spinning (MAS) and detection of the free-induction decay during a rotor-synchronized quadrupolar Carr-Purcell-Meiboom-Gill (QCPMG) train of refocusing pulses, the sensitivity of quadrupolar-echo MAS NMR spectra for the central transition of half-integer quadrupolar nuclei exhibiting large quadrupolar couplings may be significantly enhanced. Enhancements by an order of magnitude may easily be realized while maintaining information about the anisotropic interactions. In the present study the so-called QCPMG-MAS experiment is demonstrated experimentally and by numerical simulations for the two Rb-87 sites in Rb2SO4. (C) 1998 Academic Press.

引用

页码：144 / 147

页数：4