Author： Palacios B. Fuente M.R.D.L. Angel M. Jubindo P. Iglesias R. Luis J. Sierra S.T.
Publisher： Taylor & Francis Ltd
ISSN： 0267-8292
Source： Liquid Crystals, Vol.25, Iss.4, 1998-10, pp. : 481-485
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Abstract
Chiral oxovanadium(IV), copper(II) and palladium(II) beta-diketonates show a room temperature tilted columnar mesophase (rectangular P21). The dielectric response of these compounds was measured in the frequency range 10-2-109Hz. Three different relaxation processes have been observed in the columnar phase. One of them is only present in this mesophase and we suggest that it is a Goldstone-like mode, similar to the one present in the helical SmC* phases. In our case the presence of the helix was confirmed by circular dichroism studies.
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