Optimal transfer of spin-order between a singlet nuclear pair and a heteronucleus

Stephen Kadlecek, Kiarash Emami, Masaru Ishii, Rahim Rizi

Research output: Contribution to journalArticle

Abstract

Intramolecular spin-order transfer is a useful technique for signal enhancement of insensitive and low-concentration molecular species. We present a closed-form, optimized pulse sequence which maximizes the efficiency of transfer between a singlet (para) nuclear pair and a vicinal heteronucleus. Neglecting the decay of coherences while the nuclei are in the transverse plane, the scheme is unity efficient for all combinations of internuclear scalar couplings. Efficiency loss due to T2-like decay is also minimized by keeping the sequence as short as possible. We expect this result to be useful for hyperpolarization experiments in which the spin-order originates in parahydrogen, as well as studies of singlet state decay aimed at longer-term storage of spin-order in hyperpolarized Magnetic Resonance Imaging.

Original languageEnglish (US)
Pages (from-to)9-13
Number of pages5
JournalJournal of Magnetic Resonance
Volume205
Issue number1
DOIs
StatePublished - Jul 1 2010

Keywords

  • Hyperpolariation
  • Parahydrogen
  • Polarization transfer
  • Singlet

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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