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Polarization‐Transfer Methods in Solid‐State Magic‐Angle‐Spinning NMR: Adiabatic CN Pulse Sequences
Author(s) -
Verel René,
Meier Beat H.
Publication year - 2004
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200301074
Subject(s) - adiabatic process , zeeman effect , polarization (electrochemistry) , chemistry , magic angle spinning , atomic physics , excitation , magic angle , solid state nuclear magnetic resonance , spinning , molecular physics , magnetic field , physics , nuclear magnetic resonance , nuclear magnetic resonance spectroscopy , solid state , quantum mechanics , polymer chemistry
An adiabatic double‐quantum polarization‐transfer experiment is described. It can be characterized as an adiabatic variant of the POST‐C7 experiment. A continuous variation of the phase increment between pulses leads to the introduction of a fictitious Zeeman field that allows for an adiabatic passage through the recoupling condition. This results in a chemical‐shift‐offset ‐ compensated adiabatic experiment, which leads to an efficient and broadbanded polarization transfer or to a double‐quantum excitation. Similar variations of other C‐ or R‐type experiments can be envisioned.