Smectic mesophase properties of dimeric compounds. 2. Distinct formation of smectic structures with antiferroelectric ordering and frustration

Article abstract of DOI:10.1080/10587250008023867

We have prepared two series of dimeric compounds, which comprise the schiff's base mesogen, alkyl spacer with the carbon number of 5 and alkyl or alkoxy tail with the carbon number of m = 4 approx. 16. In these compounds, we observed three types of smectic liquid crystals, the single layer phase with the tail group randomly mixing with the spacer, the bilayer phase in which the segregation of the spacer and tail groups takes place and so two mesogenic layers are included within a repeat unit, the frustrated smectic phase in which the density modulation appears along the layer as well as the layer normal. The bilayer phase was found to be antiferroelectric and the frustrated smectic phase was considered to result from the two dimensional escape from the dipolar interaction. The phase behaviour with m and the structure and properties of each phase will be described in detail.

Full text of DOI:10.1080/10587250008023867

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Molecular Crystals and
Liquid Crystals Science
and Technology. Section A.
Molecular Crystals and Liquid
Crystals
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Smectic Mesophase Properties
of Dimeric Compounds.
2. Distinct Formation of
Smectic Structures with
Antiferroelectric Ordering and
Frustration
Junji Watanabe a , Tatuya Izumi a , Teruki Niori a
, Masahito Zennyoji b , Yoichi Takanishi b & Hideo
Takezoe b
a Department of Polymer Chemistry , Tokyo Institute
of Technology , Ookayama, Meguro-ku, Tokyo, 152,
Japan
b Department of Organic and Polymeric Materials ,
Tokyo Institute of Technology , Ookayama, Meguro-
ku, Tokyo, 152, Japan
Published online: 09 Jun 2011.
To cite this article: Junji Watanabe , Tatuya Izumi , Teruki Niori , Masahito Zennyoji ,
Yoichi Takanishi & Hideo Takezoe (2000) Smectic Mesophase Properties of Dimeric
Compounds. 2. Distinct Formation of Smectic Structures with Antiferroelectric
Ordering and Frustration, Molecular Crystals and Liquid Crystals Science and
Technology. Section A. Molecular Crystals and Liquid Crystals, 346:1, 77-86, DOI:
10.1080/10587250008023867

To link to this article: http://dx.doi.org/10.1080/10587250008023867
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