PITANSEMA, a low-power PISEMA solid-state NMR experiment

D. K. Lee, T. Narasimhaswamy, A. Ramamoorthy

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

A low radio frequency power polarization inversion spin exchange at the magic angle (PISEMA) pulse sequence is described for the measurement of heteronuclear dipolar couplings from solids. The method employs a time averaged nutation concept to significantly reduce the rf power required to spin-lock low γ nuclear spins in PISEMA experiments. The efficacy of the 2D method is demonstrated on a single crystal of n-acetyl-l- 15N-valyl-l- 15N-leucine dipeptide to measure 1H- 15N dipolar couplings and a liquid crystal sample to measure 1H- 13C dipolar couplings.

Original languageEnglish
Pages (from-to)359-362
Number of pages4
JournalChemical Physics Letters
Volume399
Issue number4-6
DOIs
StatePublished - 1 Dec 2004

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