Phase transition in cyclic organophosphazenes: The effect of side chains on mesomorphism

Article abstract of DOI:10.1080/10587250108025049

Mesogenicity of five cyclotriphosphazenes and two cyclotetraphosphazenes with a similar dodecyl or dodecyloxy end and different central hard groups was studied. In the four cyclotriphosphazenes except for a cyclotriphosphazene with phenyl derivative side chains, enantiotropic mesomorphic phases were observed. The order of the thermal stability in mesophase is phenylazobenzene > phenyliminomethylphenyl > biphenyl groups for the side chains. The cyclotetraphosphazenes with biphenyl and Schiff base derivatives have lower mesomorphic thermal stability than cyclotriphosphazenes with the same side groups.

Full text of DOI:10.1080/10587250108025049

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Molecular Crystals and
Liquid Crystals Science
and Technology. Section A.
Molecular Crystals and Liquid
Crystals
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Phase Transition in Cyclic
Organophosphazenes: The
Effect of Side Chains on
Mesomorphism
Keiichi Moriya a , Toshihiro Yamane a , Toshiya Suzuki
a , Meisetsu Kajiwara b & Shinichi Yano a
a Department of Chemistry, Faculty of Engineering ,
Gifu University , Yanagido, Gifu, 501-1193, Japan
b School of Dentistry, Aichigakuin University ,
Kusumoto-cho, 1-100, Chikusa-ku, Nagoya,
464-0074, Japan
Published online: 24 Sep 2006.
To cite this article: Keiichi Moriya , Toshihiro Yamane , Toshiya Suzuki , Meisetsu
Kajiwara & Shinichi Yano (2001) Phase Transition in Cyclic Organophosphazenes: The
Effect of Side Chains on Mesomorphism, Molecular Crystals and Liquid Crystals Science
and Technology. Section A. Molecular Crystals and Liquid Crystals, 364:1, 787-794,
DOI: 10.1080/10587250108025049
To link to this article: http://dx.doi.org/10.1080/10587250108025049
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