Investigation of slow molecular dynamics using R-CODEX.
Investigation of slow molecular dynamics using R-CODEX.
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DOI:
10.1016/j.jmr.2012.05.019
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发表时间:
2012-09
影响因子:
2.2
通讯作者:
McDermott, Ann
中科院分区:
文献类型:
--
作者:
Li, Wenbo;McDermott, Ann
关键词:
A solid state NMR experiment is introduced for probing motions on the millisecond time scale, based on dephasing and refocusing 1H-13C or 1H-15N dipolar couplings. The method is related to the previously described Centerband-Only Detection of Exchange or CODEX experiment. The use of an R-type dipolar recoupling sequence takes advantage of the strong 1H-13C or 1H-15N dipolar coupling, while suppressing the effect of 1H-1H homonuclear coupling. This approach paves the way to detect both the correlation time and reorientational angle of the dynamics in fully protonated samples. The performance of this pulse sequence is demonstrated using imidazole methyl sulfonate.
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