期刊
MAGNETIC RESONANCE IN CHEMISTRY
卷 45, 期 4, 页码 296-316出版社
WILEY
DOI: 10.1002/mrc.1966
关键词
NMR; broadband decoupling; Z-COSY; diffusion; DOSY
We present a new method for recording broadband proton-decoupled proton spectra with absorption mode lineshapes and substantially correct integrals; in both these respects, the new method has significant advantages over conventional J-spectroscopy. In our approach, the decoupled spectrum is simply obtained from the 45 degrees projection of the diagonal-peak multiplets of an anti z-COSY spectrum. This method is straightforward to apply, and does not require any unusual data processing. However, there is a significant reduction in sensitivity when compared to a conventional proton spectrum. The method is demonstrated for typical medium-sized molecules, and it is also shown how such a decoupled spectrum can be used to advantage in measurements of diffusion constants (DOSY), the measurement of relaxation parameters, and the analysis of complex mixtures. Copyright (C) 2007 John Wiley & Sons, Ltd.
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