Line Narrowing in Solid-State Proton NMR with Acquisition Delay

✍ Scribed by B.M. Fung; Tat-Hung Tong; Thilo Dollase; Matthew L. Magnuson

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 134 KB
• Volume: 123
• Category: Article
• ISSN: 1064-1858
• DOI: 10.1006/jmra.1996.0213

✦ Synopsis

Organic solids have extensive proton-proton dipolar interactation method can be used to complement the CRAMPS tions, and their 1 H NMR linewidths are very large even with magictechnique, which combines MAS with multiple-pulse seangle spinning at moderate speeds. Recently it has been shown quences (6-8). Subsequently, Gerstein et al. (9) confirmed that substantial narrowing of the proton linewidths of organic that single-pulse excitation with acquisition delay or spin solids can be achieved by using single-pulse excitation with acquisiecho allows the observation of narrow peaks, and suggested tion delay or spin echo [S. Ding and C. A. McDowell, J. Magn. that the peaks may be due to a small fraction of molecules