Dielectric study of the tilted columnar mesophase in three new chiral metallorganic discotic mesogens
作者:
BEATRIZ PALACIOS,
M. ROSARIO DE LA FUENTE,
MIGUEL ANGEL PEREZ JUBINDO,
RAQUEL IGLESIAS,
JOSE LUIS SERRANO,
TERESA SIERRA,
期刊:
Liquid Crystals
(Taylor Available online 1998)
卷期:
Volume 25,
issue 4
页码: 481-485
ISSN:0267-8292
年代: 1998
DOI:10.1080/026782998205994
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
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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