Publication

Quantitative determination of cross-relaxation rates in NMR using selective pulses to inhibit spin diffusion

Publications associées (35)

Long lived states in high field NMR spectroscopy for the study of very slow dynamic processes in solution state

In solution-state NMR spectroscopy, dynamic processes can be probed provided the nuclear relaxation rate constant does not exceed the rate constant of the process. Phenomena occurring on a time scale longer than the spin-lattice relaxation time constant, T ...

EPFL2009

Chemical exchange in proteins

Mariachiara Verde

Nuclear Magnetic Resonance (NMR) spectroscopy offers many ways to investigate dynamic properties of molecules. A wide variety of experimental techniques can probe molecular dynamics on time scales that range from 10-12 to 103 seconds. Many lines of evidenc ...

EPFL2009

Singlet states open the way to longer time-scales in the measurement of diffusion by NMR spectroscopy

Paul Romeo Vasos, Simone Cavadini

Nuclear magnetic resonance is a powerful nonintrusive technique for measuring diffusion coefficients through the use of pulsed field gradients. The main limitation to the application range of this method is imposed by the relaxation time constants of the m ...

2008

Single or triple gradients?

Geoffrey Bodenhausen, Paul Romeo Vasos, Riddhiman Sarkar, Fabien Ferrage

Pulsed Field Gradients (PFGs) have become ubiquitous tools not only for Magnetic Resonance Imaging (MRI), but also for NMR experiments designed to study translational diffusion, for spatial encoding in ultra-fast spectroscopy, for the selection of desirabl ...

2008

Nuclear Spin Relaxation Parameters of MRI Contrast Agents – Insight from Quantum Mechanical Calculations

Lothar Helm, Oleg Yazyev

Nuclear magnetic relaxation in the presence of paramagnetic centres has gained increasing interest in recent years partly due to its importance for contrast agents in magnetic resonance imaging. Rational design of new more efficient agents is possible as a ...

Wiley-Blackwell2008

Highly selective excitation in biomolecular NMR by frequency-switched single-transition cross-polarization

Geoffrey Bodenhausen, Fabien Ferrage

A new method for selective excitation in biomol. NMR uses two-fold single-transition cross-polarization between protons and nitrogen-15 or carbon-13 nuclei. Switching the frequencies between the forward and backward transfer steps allows one to select a mu ...

2002

Effect of oxidation of cobalt-based nanowires on NMR spin-lattice relaxation

Jean-Philippe Ansermet

Nuclear spin-lattice relaxation measurements were performed on Co-based magnetic nanowires, in zero field and in 1 T applied field. A measurement method is developped that allows a confident interpretation of the experimental data. An enhanced relaxation d ...

Springer-Verlag2000

Attenuation of Cross-Peak Intensities in QUIET-BIRD-NOESY Experiments

Geoffrey Bodenhausen

The buildup curves in QUIET-BIRD-NOESY expts., which are designed to isolate two-spin subsystems within macromols., are attenuated by transverse relaxation and evolution under homonuclear couplings during the bilinear rotation decoupling (BIRD) pulse sandw ...

1999

A spectral window in protein NMR revealing cross-relaxation between amide protons

Geoffrey Bodenhausen

The principle of quenching undesirable indirect external trouble in nuclear Overhauser effect spectroscopy (QUIET-NOESY) relies on a doubly selective inversion of the longitudinal magnetization components of a source spin A and a target spin X to measure t ...

1998

Recent progress in surface NMR-electrochemistry

Jean-Philippe Ansermet, Pierre-André Vuissoz

NMR spectroscopy is one of the newer spectroscopic techniques for investigating the static, dynamic and electronic structures of molecules adsorbed onto metal catalyst surfaces. We review recent progress in the application of solid-state NMR methods to the ...

1997

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