Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Line Narrowing in Solid-State Proton NMR with Acquisition Delay

Fung1, Tong, Dollase

  • 1Department of Chemistry and Biochemistry, University of Oklahoma, Norman, Oklahoma, 73019-0370

Journal of Magnetic Resonance. Series A
|November 1, 1996
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Three-Dimensional Fast Spin-Echo T2-Weighted Magnetic Resonance Images of the Cerebellopontine Angle.

The international tinnitus journal·2001
Same author

Response to letter to the editor by goldwurm and biondi-"Case of congenital hypotransferrinemia suggests that tissue hypoxia during fetal development may cause hypospadias"

American journal of medical genetics·2000
Same author

Anomalous burning rates of flamelets induced by self-similar multiple scale (fractal and spiral) initial fields

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2000
Same author

Large-scale coherent rotation and oscillation in turbulent thermal convection

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2000
Same author

Many-body approach to the dynamics of batch learning

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2000
Same author

Supramolecular photochirogenesis. 2. Enantiodifferentiating photoisomerization of cyclooctene included and sensitized by 6-O-modified cyclodextrins

The Journal of organic chemistry·2000

Researchers found that using a long acquisition delay in nuclear magnetic resonance (NMR) significantly narrows proton (1H) linewidths in organic solids. This technique enhances spectral resolution for studying these materials.

Area of Science:

  • Solid-state Nuclear Magnetic Resonance (NMR) Spectroscopy
  • Organic Chemistry
  • Materials Science

Background:

  • Organic solids exhibit broad 1H NMR linewidths due to strong proton-proton dipolar interactions, even under magic-angle spinning.
  • Previous studies indicated that single-pulse excitation with acquisition delay or spin echo can narrow these proton linewidths.

Purpose of the Study:

  • To further investigate the phenomenon of proton linewidth narrowing in organic solids using specific experimental techniques.
  • To explore the underlying reasons for this line-narrowing effect by studying various organic compounds and comparing with inorganic materials.

Main Methods:

  • Utilized single-pulse excitation with varying acquisition delays and spin echo techniques in 1H NMR spectroscopy.
  • Studied a range of organic solids including amino acids, deuterated analogs, and aromatic compounds.

Related Experiment Videos

  • Investigated the effect of acquisition delay on 19F NMR linewidths in CaF2 for comparative analysis.

    • Main Results:

    • Confirmed that long acquisition delays result in narrow proton peaks within the expected chemical shift range (0-10 ppm).
    • Observed that these narrow peaks, while observable, are generally not assignable to specific proton types solely based on chemical shift.
    • Found that the broad proton peak in organic solids is a composite of numerous transitions with varying linewidths.

    Conclusions:

    • Long acquisition delays effectively narrow proton linewidths in organic solids, improving spectral clarity.
    • The observed line narrowing is attributed to the selective observation of transitions with inherently narrower linewidths within a broader distribution.
    • The technique offers a method to enhance the resolution of 1H NMR spectra for organic solids, although detailed assignment requires further methods.