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. 2000 Jan;142(1):97-101.
doi: 10.1006/jmre.1999.1896.

An improved broadband decoupling sequence for liquid crystals and solids

B M Fung  1 , A K Khitrin, K Ermolaev
Affiliations

An improved broadband decoupling sequence for liquid crystals and solids

B M Fung et al. J Magn Reson. 2000 Jan.

Abstract

Recently we developed an efficient broadband decoupling sequence called SPARC-16 for liquid crystals ¿J. Magn. Reson. 130, 317 (1998). The sequence is based upon a 16-step phase cycling of the 2-step TPPM decoupling method for solids ¿J. Chem. Phys. 103, 6951 (1995). Since then, we have found that a stepwise variation of the phase angle in the TPPM sequence offers even better results. The application of this new method to a liquid crystalline compound, 4-n-pentyl-4'-cyanobiphenyl, and a solid, L-tyrosine hydrochloride, is reported. The reason for the improvement is explained by an analysis of the problem in the rotating frame.

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