Corrigendum to “Shortening spin–lattice relaxation using a copper-chelated lipid at low-temperatures – A magic angle spinning solid-state NMR study on a membrane-bound protein” [J. Magn. Reson. 237 (2014) 175–181]

2014 ◽  
Vol 245 ◽  
pp. 177
Author(s):  
Kazutoshi Yamamoto ◽  
Marc A. Caporini ◽  
Sangchoul Im ◽  
Lucy Waskell ◽  
Ayyalusamy Ramamoorthy
2019 ◽  
Vol 55 (39) ◽  
pp. 5643-5646 ◽  
Author(s):  
Maria Makrinich ◽  
Amir Goldbourt

Proton detection and phase-modulated pulse saturation enable the measurement of spin–lattice relaxation times of “invisible” quadrupolar nuclei with extensively large quadrupolar couplings.


Author(s):  
ASIF EQUBAL ◽  
Kan Tagami ◽  
Songi Han

In this paper, we report on an entirely novel way of improving the MAS-DNP efficiency by shaped μw pulse train irradiation for fast and broad-banded (FAB) saturation of the electron spin resonance. FAB-DNP achieved with Arbitrary Wave Generated shaped μw pulse trains facilitates effective and selective saturation of a defined fraction of the total electron spins, and provides superior control over the DNP efficiency under MAS. Experimental and quantum-mechanics based numerically simulated results together demonstrate that FAB-DNP significantly outperforms CW-DNP when the EPR-line of PAs is broadened by conformational distribution and exchange coupling. We demonstrate that the maximum benefit of FAB DNP is achieved when the electron spin-lattice relaxation is fast relative to the MAS frequency, i.e. at higher temperatures and/or when employing metals as PAs. Calculations predict that under short T<sub>1e </sub>conditions AWG-DNP can achieve as much as ~4-fold greater enhancement compared to CW-DNP.


1987 ◽  
Vol 109 (20) ◽  
pp. 6059-6067 ◽  
Author(s):  
J. Stephen Hartman ◽  
Mary F. Richardson ◽  
Barbara L. Sherriff ◽  
Beatrice G. Winsborrow

2011 ◽  
Vol 212 (2) ◽  
pp. 460-463 ◽  
Author(s):  
Riddhiman Sarkar ◽  
Maria Concistrè ◽  
Ole G. Johannessen ◽  
Peter Beckett ◽  
Mark Denning ◽  
...  

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