VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Enhancing sensitivity or resolution of homonuclear correlation experiment for half-integer quadrupolar nuclei
    Mali, Gregor, 1971- ; Kaučič, Venčeslav
    We have recently introduced double-quantum homonuclear correlation NMR experiment for half-integer quadrupolar nuclei in solids, which was based on rotary resonance recoupling šJ. Chem. Phys. 120 ... (2004) 2835đ. In this contribution we show on two 23Na (I = 3ž2) containing samples, Na2SO4 and Na2HPO4, that the efficiency of the experiment can be substantially enhanced by adding rotor assisted population transfer (RAPT) and Carr-Purcell-Meiboom-Gill (CPMG) sequences to it. We also present an upgraded two-dimensional experiment, in which double- and six-quantum coherences are correlated during t1 evolution period, yielding a high-resolution isotropic spectrum along an indirectly detected dimension. The sensitivity of the upgraded experiment is, however, greatly reduced compared to the sensitivity of the original experiment, so that its application is feasible only when RAPTand CPMG can be used as well.
    Vir: Journal of magnetic resonance. - ISSN 1090-7807 (Vol. 171, no. 1, 2004, str. 48-56)
    Vrsta gradiva - članek, sestavni del
    Leto - 2004
    Jezik - angleški
    COBISS.SI-ID - 3136794