Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Pure Isotropic Proton Solid State NMR
 
research article

Pure Isotropic Proton Solid State NMR

Moutzouri, Pinelopi  
•
de Almeida, Bruno Simoes  
•
Torodii, Daria
Show more
July 7, 2021
Journal Of The American Chemical Society

Resolution in proton solid state magic angle sample spinning (MAS) NMR is limited by the intrinsically imperfect nature of coherent averaging induced by either MAS or multiple pulse sequence methods. Here, we suggest that instead of optimizing and perfecting a coherent averaging scheme, we could approach the problem by parametrically mapping the error terms due to imperfect averaging in a k-space representation, in such a way that they can be removed in a multidimensional correlation leaving only the desired pure isotropic signal. We illustrate the approach here by determining pure isotropic H-1 spectra from a series of MAS spectra acquired at different spinning rates. For six different organic solids, the approach is shown to produce pure isotropic H-1 spectra that are significantly narrower than the MAS spectrum acquired at the fastest possible rate, with linewidths down to as little as 48 Hz. On average, we observe a 7-fold increase in resolution, and up to a factor of 20, as compared with spectra acquired at 100 kHz MAS. The approach is directly applicable to a range of solids, and we anticipate that the same underlying principle for removing errors introduced here can be applied to other problems in NMR spectroscopy.

  • Details
  • Metrics
Type
research article
DOI
10.1021/jacs.1c03315
Web of Science ID

WOS:000672592000014

Author(s)
Moutzouri, Pinelopi  
de Almeida, Bruno Simoes  
Torodii, Daria
Emsley, Lyndon  
Date Issued

2021-07-07

Published in
Journal Of The American Chemical Society
Volume

143

Issue

26

Start page

9834

End page

9841

Subjects

Chemistry, Multidisciplinary

•

Chemistry

•

nuclear-magnetic-resonance

•

filter diagonalization method

•

chemical-shift correlation

•

high-resolution nmr

•

100 khz mas

•

magic-angle

•

crystal-structure

•

pulse sequences

•

spectra

•

systems

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LRM  
FunderGrant Number

FNS

200020_178860

Available on Infoscience
July 31, 2021
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/180247
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés