scholarly journals Symmetry-Based Pulse Sequences in Magic-Angle Spinning Solid-State NMR

ChemInform ◽  
2003 ◽  
Vol 34 (38) ◽  
Author(s):  
Malcolm H. Levitt
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Pulse Sequences ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Angle Spinning

Highly efficient19F heteronuclear decoupling in solid-state NMR spectroscopy using supercycled refocused-CW irradiation

2016 ◽  
Vol 18 (45) ◽  
pp. 30990-30997 ◽  
Author(s):  
Asif Equbal ◽  
Kristoffer Basse ◽  
Niels Chr. Nielsen
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
Pulse Sequences ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Solid State Nmr Spectroscopy ◽  
Angle Spinning

We present heteronuclear19F refocused CW (rCW) decoupling pulse sequences for solid-state magic-angle-spinning NMR applications.

Characterization of Nanostructured Organic-Inorganic Hybrid Materials Using Advanced Solid-State NMR Spectroscopy

2009 ◽  
Vol 1184 ◽  
Author(s):  
Kanmi Mao ◽  
Jennifer L. Rapp ◽  
Jerzy W. Wiench ◽  
Marek Pruski
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Pulse Sequences ◽  
Magic Angle Spinning ◽  
Indirect Detection ◽  
Resonance Spectroscopy ◽  
Magic Angle ◽  
Inorganic Hybrid ◽  
Angle Spinning ◽  
Fast Magic Angle Spinning

AbstractWe demonstrate the applications of several novel techniques in solid-state nuclear magnetic resonance spectroscopy (SSNMR) to the structural studies of mesoporous organic-inorganic hybrid catalytic materials. Most of these latest capabilities of solid-state NMR were made possible by combining fast magic angle spinning (at ≥ 40 kHz) with new multiple RF pulse sequences. Remarkable gains in sensitivity have been achieved in heteronuclear correlation (HETCOR) spectroscopy through the detection of high-λ (1H) rather than low-λ (e.g., 13C, 15N) nuclei. This so-called indirect detection technique can yield through-space 2D 13C-1H HETCOR spectra of surface species under natural abundance within minutes, a result that earlier has been out of reach. The 15N-1H correlation spectra of species bound to a surface can now be acquired, also without isotope enrichment. The first indirectly detected through-bond 2D 13C-1H spectra of solid samples are shown, as well. In the case of 1D and 2D 29Si NMR, the possibility of generating multiple Carr-Purcell-Meiboom-Gill (CPMG) echoes during data acquisition offered time savings by a factor of ten to one hundred. Examples of the studied materials involve mesoporous silica and mixed oxide nanoparticles functionalized with various types of organic groups, where solid-state NMR provides the definitive characterization.

scholarly journals Combination of solid state NMR and DFT calculation to elucidate the state of sodium in hard carbon electrodes

2016 ◽  
Vol 4 (34) ◽  
pp. 13183-13193 ◽  
Author(s):  
Ryohei Morita ◽  
Kazuma Gotoh ◽  
Mika Fukunishi ◽  
Kei Kubota ◽  
Shinichi Komaba ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Dft Calculation ◽  
Magic Angle Spinning ◽  
The State ◽  
Mas Nmr ◽  
Magic Angle ◽  
Multiple Quantum ◽  
Hard Carbon ◽  
Angle Spinning

We examined the state of sodium electrochemically inserted in HC prepared at 700–2000 °C using solid state Na magic angle spinning (MAS) NMR and multiple quantum (MQ) MAS NMR.

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