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  4. Control of Cross Relaxation of Multiple-Quantum Coherences Induced by Fast Chemical Exchange under Heteronuclear Double-Resonance Irradiation
 
research article

Control of Cross Relaxation of Multiple-Quantum Coherences Induced by Fast Chemical Exchange under Heteronuclear Double-Resonance Irradiation

Ulzega, Simone  
•
Salvi, Nicola  
•
Segawa, Takuya F.  
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2011
ChemPhysChem

A fully analytical description of the control of the cross-correlated cross relaxation of multiple-quantum coherences in the presence of local dynamics under heteronuclear double-resonance radio-frequency (RF) irradiation is presented. The contribution of chemical exchange to relaxation can be partly or fully quenched by RF fields. We assume a correlated two-site chemical exchange model with arbitrary populations, and show that in the limit of fast exchange the dependence of the effective multiple-quantum cross-relaxation rate on the applied RF amplitude can be described by a compact analytical expression. Numerical simulations and preliminary experiments support our theoretical results. The relaxation dispersion as a function of RF amplitude can provide accurate information on the kinetics of correlated processes.

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Type
research article
DOI
10.1002/cphc.201000699
Web of Science ID

WOS:000287792300015

Author(s)
Ulzega, Simone  
Salvi, Nicola  
Segawa, Takuya F.  
Ferrage, Fabien
Bodenhausen, Geoffrey  
Date Issued

2011

Published in
ChemPhysChem
Volume

12

Start page

333

End page

341

Subjects

chemical exchange

•

cross relaxation

•

NMR spectroscopy

•

proteins

•

quantum chemistry

•

Time-Scale Dynamics

•

Nmr-Spectroscopy

•

Rotating-Frame

•

Proteins

•

Dispersion

•

Modulation

•

Systems

Editorial or Peer reviewed

NON-REVIEWED

Written at

EPFL

EPFL units
LRMB  
Available on Infoscience
April 14, 2011
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/66440
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