TY - JOUR
T1 - Exploring various modulation-sideband recoupling conditions of SHA+ sequence at fast MAS
AU - Shen, Ming
AU - Liu, Qinghua
AU - Trébosc, Julien
AU - Lafon, Oliver
AU - Masuda, Yuichi
AU - Takegoshi, K.
AU - Amoureux, Jean Paul
AU - Hu, Bingwen
AU - Chen, Qun
PY - 2013/10
Y1 - 2013/10
N2 - We explore modulation-sideband recoupling conditions of the 13C-13C Second-order Hamiltonian among Analogous nuclei plus pulse sequence (SHA+), and found that this sequence can be used in two different recoupling regimes. The first regime, νR>Δν isomax, is recommended for broad-band recoupling to avoid any rotational resonance broadening. In this regime, the spinning speed should be only slightly larger than Δνisomax, to obtain the best transfer efficiency. The second regime, νR<Δνisomax, can be used to observe long-range constraints with lower spinning speed, which increases the transfer efficiency, and may allow using bigger rotors to increase the S/N ratio.
AB - We explore modulation-sideband recoupling conditions of the 13C-13C Second-order Hamiltonian among Analogous nuclei plus pulse sequence (SHA+), and found that this sequence can be used in two different recoupling regimes. The first regime, νR>Δν isomax, is recommended for broad-band recoupling to avoid any rotational resonance broadening. In this regime, the spinning speed should be only slightly larger than Δνisomax, to obtain the best transfer efficiency. The second regime, νR<Δνisomax, can be used to observe long-range constraints with lower spinning speed, which increases the transfer efficiency, and may allow using bigger rotors to increase the S/N ratio.
KW - Bio-molecules
KW - Fast MAS
KW - Homo-nuclear correlation
KW - Modulation sidebands
KW - Solid-state NMR
UR - https://www.scopus.com/pages/publications/84888006128
U2 - 10.1016/j.ssnmr.2013.07.001
DO - 10.1016/j.ssnmr.2013.07.001
M3 - 文章
C2 - 23953427
AN - SCOPUS:84888006128
SN - 0926-2040
VL - 55-56
SP - 42
EP - 47
JO - Solid State Nuclear Magnetic Resonance
JF - Solid State Nuclear Magnetic Resonance
ER -