METHOD OF 2D-NMR CORRELATION SPECTROSCOPY WITH DOUBLE QUANTUM FILTRATION FOLLOWED BY EVOLUTION OF SINGLE QUANTUM TRANSITIONS

摘要

i) excitation of double quantum coherence; ii) immediate reconversion to single transition single quantum coherence; iii) evolution of the set of single transitions; iv) mixing with zero quantum mixing Hamiltonian; v) signal detection. The method can achieve an improved sensitivity, has a transition selectivity and suppresses diagonal peaks.