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Article
Enhanced 1H-X D-HMQC performance through improved 1H homonuclear decoupling
Ames Laboratory Accepted Manuscripts
  • Frederic A. Perras, Ames Laboratory
  • Tian Wei Goh, Iowa State University and Ames Laboratory
  • Lin-Lin Wang, Ames Laboratory
  • Wenyu Huang, Iowa State University and Ames Laboratory
  • Marek Pruski, Iowa State University and Ames Laboratory
Publication Date
1-10-2019
Department
Ames Laboratory; Chemistry
OSTI ID+
1494939
Report Number
IS-J 9865
DOI
10.1016/j.ssnmr.2019.01.001
Journal Title
Solid State Nuclear Magnetic Resonance
Abstract

The sensitivity of solid-state NMR experiments that utilize 1H zero-quantum heteronuclear dipolar recoupling, such as D-HMQC, is compromised by poor homonuclear decoupling. This leads to a rapid decay of recoupled magnetization and an inefficient recoupling of long-range dipolar interactions, especially for nuclides with low gyromagnetic ratios. We investigated the use, in symmetry-based 1H heteronuclear recoupling sequences, of a basic R element that was principally designed for efficient homonuclear decoupling. By shortening the time required to suppress the effects of homonuclear dipolar interactions to the duration of a single inversion pulse, spin diffusion was effectively quenched and long-lived recoupled coherence lifetimes could be obtained. We show, both theoretically and experimentally, that these modified sequences can yield considerable sensitivity improvements over the current state-of-the-art methods and applied them to the indirect detection of 89Y in a metal-organic framework.

DOE Contract Number(s)
AC02-07CH11358
Language
en
Publisher
Iowa State University Digital Repository, Ames IA (United States)
Disciplines
Citation Information
Frederic A. Perras, Tian Wei Goh, Lin-Lin Wang, Wenyu Huang, et al.. "Enhanced 1H-X D-HMQC performance through improved 1H homonuclear decoupling" Vol. 98 (2019) p. 12 - 18
Available at: http://works.bepress.com/wenyu_huang/56/