Journal of Magnetic Resonance

Journal: Journal of Magnetic Resonance

Abbreviation

J Magn Reson

Publisher

Elsevier

ISSN

1090-7807
1096-0856

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Publications 1 - 10 of 126

Time-of-flight variant to image mixing of granular media in a 3D fluidized bed
Holland, Daniel J.; Müller, Christoph R.; Davidson, John F.; et al. (2007)
Journal of Magnetic Resonance
Direct Conversion of EPR Dipolar Time Evolution Data to Distance Distributions
Jeschke, Gunnar; Koch, Achim; Jonas, Ulrich; et al. (2002)
Journal of Magnetic Resonance
Peak suppression in ESEEM spectra of multinuclear spin systems
Stoll, Stefan; Calle, Carlos; Mitrikas, George; et al. (2005)
Journal of Magnetic Resonance
UWB DEER and RIDME distance measurements in Cu(II)–Cu(II) spin pairs
Breitgoff, Frauke D.; Keller, Katharina; Qi, Mian; et al. (2019)
Journal of Magnetic Resonance
Distance determination by Electron Paramagnetic Resonance (EPR) based on measurements of the dipolarcoupling are technically challenging for electron spin systems with broad spectra due to comparativelynarrow microwave pulse excitation bandwidths. With Na4[{Cu^II(PyMTA)}-(stiff spacer)-{Cu^II(PyMTA)}]as a model compound, we compared DEER and RIDME measurements and investigated the use offrequency-swept pulses. We found very large improvements in sensitivity when substituting themonochromatic pump pulse by a frequency-swept one in DEER experiments with monochromatic obser-ver pulses. This effect was especially strong in X band, where nearly the whole spectrum can be includedin the experiment. The RIDME experiment is characterised by a trade-off in signal intensity and modula-tion depth. Optimal parameters are further influenced by varying steepness of the background decay. Asimple 2-point optimization experiment was found to serve as good estimate to identify the mixing timeof highest sensitivity. Using frequency-swept pulses in the observer sequences resulted in lower SNR inboth the RIDME and the DEER experiment. Orientation selectivity was found to vary in both experimentswith the detection position as well as with the settings of the pump pulse in DEER. In RIDME, orientationselection by relaxation anisotropy of the inverted spin appeared to be negligible as form factors remainrelatively constant with varying mixing time. This reduces the overall observed orientation selection tothe one given by the detection position. Field-averaged data from RIDME and DEER with a shaped pumppulse resulted in the same dipolar spectrum. We found that both methods have their advantages and dis-advantages for given instrumental limitations and sample properties. Thus the choice of method dependson the situation at hand and we discuss which parameters should be considered for optimization.
Orientation selective DEER measurements on vinculin tail at X-band frequencies reveal spin label orientations
Abé, Christoph; Klose, Daniel; Dietrich, Franziska; et al. (2012)
Journal of Magnetic Resonance
Effective rotational correlation times of proteins from NMR relaxation interference
Lee, Donghan; Hilty, Christian; Wider, Gerhard; et al. (2006)
Journal of Magnetic Resonance
Full relaxation matrix analysis of apparent cross-correlated relaxation rates in four-spin systems
Vögeli, Beat (2013)
Journal of Magnetic Resonance
Radiation-damping effects in a birdcage resonator with hyperpolarised He-3 gas NMR at 1.5 T
Teh, Kevin; Zanche, Nicola de; Wild, Jim M. (2007)
Journal of Magnetic Resonance
Quantitative determination of NOE rates in perdeuterated and protonated proteins
Vögeli, Beat; Friedmann, Michael; Leitz, Dominik; et al. (2010)
Journal of Magnetic Resonance
Inverse methods in two-dimensional NMR spectral analysis
Beek, Jacco D. van; Meier, Beat H.; Schäfer, Hartmut (2003)
Journal of Magnetic Resonance

Publications 1 - 10 of 126

Journal: Journal of Magnetic Resonance

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