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Molecular Organisation on Interfaces pp 88–94Cite as

A novel way for the alignment of lyotropic hexagonal and Lα phases in magnetic fields

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Part of the book series: Progress in Colloid and Polymer Science ((PROGCOLLOID,volume 121))

Abstract

An ionically charged Lα phase can be prepared without shear by mixing a small amount of meth-ylformiate to an L3 phase from alkyldimethylaminoxide, hexanol and water. If the structural transformation induced by the hydrolysis reaction of the ester is carried out in the presence of a high magnetic field, a macroscopically aligned lamellar phase is obtained. The alignment process was studied by 2H NMR measurements. The NMR measurements allow the determination of the rate constant of the alignment process and at the same time they can be used to control the degree of macroscopic orientation of the system. In addition, we studied the formation and the alignment process of a hexagonal lyotropic mesophase. The hexagonal phase can be prepared without shear by protonating a highly concentrated alkyldimethylaminoxide solution. The reaction that is used for the protonation is the hydrolysis reaction of methylformiate to formic acid and methanol.

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Author information

Authors and Affiliations

  1. Experimentalphysik II, University of Bayreuth, 95440, Bayreuth, Germany

    Annette Fischer & HeinzS Hoffmann

  2. Physical Chemistry I, University of Bayreuth, 95440, Bayreuth, Germany

    Peter Medick & Ernst Rössler

Authors
  1. Annette Fischer
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  2. HeinzS Hoffmann
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  3. Peter Medick
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  4. Ernst Rössler
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Corresponding author

Correspondence to Annette Fischer .

Editor information

G. Lagaly

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© 2002 Springer-Verlag

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Fischer, A., Hoffmann, H., Medick, P., Rössler, E. (2002). A novel way for the alignment of lyotropic hexagonal and Lα phases in magnetic fields. In: Lagaly, G. (eds) Molecular Organisation on Interfaces. Progress in Colloid and Polymer Science, vol 121. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-47822-1_17

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  • DOI: https://doi.org/10.1007/3-540-47822-1_17

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-43637-9

  • Online ISBN: 978-3-540-47822-5

  • eBook Packages: Springer Book Archive

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