Improved resolution in proton NMR spectroscopy of powdered solids

We present a new solid-state nuclear magnetic resonance experiment that yields, under CRAMPS decoupling conditions, a significant reduction in proton line widths for powdered organic solids. This experiment which relies on a constant-time acquisition of the proton transverse magnetization, removes the contribution of nonrefocusable broadening from the proton line widths. Although this new technique suffers from relatively low sensitivity, we demonstrate in this paper its feasibility on two model samples, L-alanine and the dipeptide Ala-Asp. In both cases a factor of between and 3 in line width reduction is obtained for most of the proton resonances.


Published in:
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 123, 24, 5747-5752
Year:
2001
Publisher:
AMER CHEMICAL SOC
ISSN:
0002-7863
Laboratories:




 Record created 2015-01-08, last modified 2018-03-17


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