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Fluorine-19 NMR of solids with both homonuclear (multipulse) decoupling and pulsed proton decoupling

✍ Scribed by Ulrich Scheler; Robin K. Harris

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 328 KB
Volume: 262
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(96)01057-3

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✦ Synopsis

The application of multipulse and of combined rotation and multipulse spectroscopy (CRAMPS) to fluorine is demonstrated. The MREV-8 multipulse sequence is applied to average the homonuclear dipolar coupling between the fluorine nuclei. The heteronuclear dipolar coupling to the protons can be suppressed by irradiation with a synchronized sequence of "rr pulses at the proton frequency. MAS is applied to average the anisotropy of the chemical shift. Applications to a fluorinated adamantane derivative and to polyvinylidenedifluoride (PVDF) are shown.

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