title: Probing proximities between different quadrupolar isotopes using multi-pulse cross-polarization.
abstract: We present a novel cross-polarization MAS NMR pulse sequence to probe proximities between half-integer quadrupolar isotopes. This sequence employs a multi-pulse cross-polarization (MP-CP) transfer, instead of the previous continuous-wave CP (CW-CP) transfer. With respect to CW-CP transfers, our sequence is more robust with respect to offsets and Rotary Resonance Recoupling detrimental effects, especially when taking into account rf-inhomogeneity. Moreover, by using a frequency splitter and a single channel MAS probe, this MP-CP sequence may allow analyzing the through-space connectivities between two isotopes with half-integer spin values and close Larmor frequencies.
authors: UCCS, CNRS, UMR-8181, University Lille North of France, Villeneuve d'Ascq 59652, France.
authors: Xingyu
authors: X
authors: Lu
authors: Aany Sofia Lilly
authors: AS
authors: Tankamony
authors: Julien
authors: J
authors: Trébosc
authors: Olivier
authors: O
authors: Lafon
authors: Jean-Paul
authors: JP
authors: Amoureux