scholarly journals Highly Stable Magic Angle Spinning Spherical Rotors Lacking Turbine Grooves

2020 ◽  
Author(s):  
Thomas M. Osborn Popp ◽  
Alexander Däpp ◽  
Chukun Gao ◽  
Pin-Hui Chen ◽  
Lauren E. Price ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
High Frequency ◽  
Solid State Nmr ◽  
High Stability ◽  
Nuclear Polarization ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Minimal Risk ◽  
Rotor Surface ◽  
Angle Spinning

Abstract. The use of spherical rotors for magic angle spinning offers a number of advantages including improved sample exchange, efficient microwave coupling for dynamic nuclear polarization nuclear magnetic resonance (NMR) experiments and, most significantly, high frequency and stable spinning with minimal risk of rotor crash. Here we demonstrate the sim- ple retrofitting of a commercial NMR probe with MAS spheres for solid-state NMR. We analyze a series of turbine groove geometries to investigate the importance of the rotor surface on spinning performance. Of note, rotors lacking any surface modification spin rapidly and stably even without feedback control. The high stability of a spherical rotor about the magic angle is shown to be dependent on its inertia tensor rather than the presence of turbine grooves.

scholarly journals Highly stable magic angle spinning spherical rotors

2020 ◽  
Vol 1 (1) ◽  
pp. 97-103
Author(s):  
Thomas M. Osborn Popp ◽  
Alexander Däpp ◽  
Chukun Gao ◽  
Pin-Hui Chen ◽  
Lauren E. Price ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
High Frequency ◽  
Solid State Nmr ◽  
High Stability ◽  
Nuclear Polarization ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Minimal Risk ◽  
Rotor Surface ◽  
Angle Spinning

Abstract. The use of spherical rotors for magic angle spinning offers a number of advantages, including improved sample exchange, efficient microwave coupling for dynamic nuclear polarization nuclear magnetic resonance (NMR) experiments, and, most significantly, high frequency and stable spinning with minimal risk of rotor crash. Here we demonstrate the simple retrofitting of a commercial NMR probe with MAS spheres for solid-state NMR. We analyze a series of turbine groove geometries to investigate the importance of the rotor surface for spinning performance. Of note, rotors lacking any surface modification spin rapidly and stably even without feedback control. The high stability of a spherical rotor about the magic angle is shown to be dependent on its inertia tensor rather than the presence of turbine grooves.

Silica materials with wall-embedded nitroxides provide efficient polarization matrices for dynamic nuclear polarization NMR

2016 ◽  
Vol 52 (32) ◽  
pp. 5531-5533 ◽  
Author(s):  
Eric Besson ◽  
Fabio Ziarelli ◽  
Emily Bloch ◽  
Guillaume Gerbaud ◽  
Séverine Queyroy ◽  
...  
Keyword(s):  
Dynamic Nuclear Polarization ◽  
Solid State Nmr ◽  
High Field ◽  
Nuclear Polarization ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Hybrid Silica ◽  
Silica Materials ◽  
Field Dynamic ◽  
Angle Spinning

Hybrid silica materials with wall-embedded nitroxides efficiently polarize impregnated substrates in high-field dynamic nuclear polarization magic-angle spinning solid-state NMR experiments.

scholarly journals Optimizing nitroxide biradicals for cross-effect MAS-DNP: the role of g-tensors’ distance

2020 ◽  
Vol 22 (6) ◽  
pp. 3643-3652 ◽  
Author(s):  
Frédéric Mentink-Vigier
Keyword(s):  
Solid State ◽  
Dynamic Nuclear Polarization ◽  
Solid State Nmr ◽  
Nuclear Polarization ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Cross Effect ◽  
Angle Spinning

Nitroxide biradicals are common polarizing agents used to enhance the sensitivity of solid-state NMR experiments via Magic Angle Spinning Dynamic Nuclear Polarization (MAS-DNP).

scholarly journals Natural Abundance Oxygen-17 Solid-State NMR of Metal Organic Frameworks Enhanced by Dynamic Nuclear Polarization

2021 ◽  
Author(s):  
Diego Carnevale ◽  
Georges Mouchaham ◽  
Sujing WANG ◽  
Mathieu Baudin ◽  
Christian SERRE ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Dynamic Nuclear Polarization ◽  
Solid State Nmr ◽  
Nuclear Polarization ◽  
Metal Organic Frameworks ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Metal Organic ◽  
Angle Spinning

The 17O resonances of Zirconium-oxo clusters in porous Zr carboxylate metal-organic frameworks (MOFs) have been investigated by magic-angle spinning (MAS) NMR spectroscopy enhanced by dynamic nuclear polarization (DNP) at natural...

scholarly journals Fast and accurate MAS–DNP simulations of large spin ensembles

2017 ◽  
Vol 19 (5) ◽  
pp. 3506-3522 ◽  
Author(s):  
Frédéric Mentink-Vigier ◽  
Shimon Vega ◽  
Gaël De Paëpe
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Fields ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Magic Angle Spinning ◽  
Successful Implementation ◽  
Magic Angle ◽  
Angle Spinning ◽  
Large Spin

A deeper understanding of parameters affecting Magic Angle Spinning Dynamic Nuclear Polarization (MAS–DNP), an emerging nuclear magnetic resonance hyperpolarization method, is crucial for the development of new polarizing agents and the successful implementation of the technique at higher magnetic fields (>10 T).

scholarly journals Measurement of 14N quadrupole couplings in biomolecular solids using indirect-detection 14N solid-state NMR with DNP

2017 ◽  
Vol 53 (89) ◽  
pp. 12116-12119 ◽  
Author(s):  
J. A. Jarvis ◽  
I. Haies ◽  
M. Lelli ◽  
A. J. Rossini ◽  
I. Kuprov ◽  
...  
Keyword(s):  
Protein Structure ◽  
Solid State ◽  
Dynamic Nuclear Polarization ◽  
Solid State Nmr ◽  
Nuclear Polarization ◽  
Magic Angle Spinning ◽  
Indirect Detection ◽  
Magic Angle ◽  
Angle Spinning

Insights into protein structure through the determination of 14N quadrupolar interactions using magic-angle spinning dynamic nuclear polarization NMR.

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