Heteronuclear dipolar recoupling in liquid crystals and solids by PISEMA-type pulse sequences |
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| Authors: | Dvinskikh Sergey V Zimmermann Herbert Maliniak Arnold Sandström Dick |
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| Affiliation: | Division of Physical Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden. sergey@physc.su.se |
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| Abstract: | A pulse sequence is described for the recoupling of heteronuclear dipolar interactions under MAS. The method is similar to the PISEMA experiment, but employs a well-defined amplitude modulation of one of the two radio-frequency fields. The technique is used for measurements of 1H-13C dipolar couplings in unoriented solid and liquid-crystalline samples. |
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