Method for editing CPMAS solid-state NMR spectra
US5245284A · kind A · utility
3Cited by
11References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1992 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | Sep 30, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/4641
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A normal CPMAS experiment is modified to provide for spectral editing. In one embodiment of the invention, the conventional CPMAS experiment is performed with the proton decoupling RF applying at a frequency slightly different than the proton resonance frequency in order to suppress methylene (CH.sub.2) resonances more severely than CH and CH.sub.3 resonances. In another embodiment of the invention the RF pulse sequence normally using during the cross-polarization period is replaced with a WIM RF pulse sequence which has the effect of suppressing the CH and CH.sub.3 resonances, thereby leaving the CH.sub.2 resonances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.