Field and magic angle spinning frequency dependence of proton resonances in rotating solids

Regulating polystyrene glass transition temperature by varying the hydration levels of aromatic ring/Li+ interaction

“…As a result, we resorted to the 0.7 mm rotor, which can spin up to 110 kHz and enables proton peaks to be resolved. 10 In this case, the sample was spun up to 80 kHz at a magnetic field of 800 MHz (18.8 T). Magic angle spinning (MAS) dependent proton sensitivity is shown in Fig.…”

Advances in the characterization of inorganic solids using NMR correlation experiments

“…Furthermore, the increased availability of fast MAS probes reaching MAS frequencies of 150 kHz or above combined with high magnetic fields 441,442 is expected to promote the use of detection via protons in correlation experiments.…”

Was starke Magnetfelder Biopolymeren entlocken

“…Dabei dreht sich die Probe über 100 000 Mal pro Sekunde (ω r >100 kHz). 14) Wenn der Abstand der Resonanzen höher ist als die dipolare Kopplung, transformieren starke in schwache Kopplungen, was die Signale schmaler macht und damit die Auflösung verbessert. Unter diesen Bedingungen lassen sich Biomakromoleküle empfindlich untersuchen, obwohl das Probenvolumen weniger als 1 μL beträgt.…”