Manipulation of the director in bicellar mesophases by sample spinning: a new tool for NMR spectroscopy. |
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Authors: | G Zandomeneghi M Tomaselli J D van Beek B H Meier |
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Institution: | Contribution from the Laboratory of Physical Chemistry, ETH-Zentrum, CH-8092 Zurich, Switzerland. |
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Abstract: | It is shown that bicellar nematic liquid-crystalline phases can be oriented with the director (the normal to the bicellar plane) at an arbitrary angle to the applied magnetic field by sample rotation around one axis (variable-angle sample spinning) or around two axes successively (switched-angle spinning). This promises to open novel possibilities for NMR studies of bicelles and proteins incorporated into bicelles or dissolved in a solution containing bicelles, including the correlation of several orientations in a two-dimensional NMR experiment. |
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