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The liquid crystalline state in organophosphazenes with biphenyl mesogenic groups

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Abstract

Hexakis[4-(4′-decyloxy)biphenoxy]cyclotriphosphazene (HDBCTP), hexakis [4-(4′-cyano)biphenoxy]cyclotriphosphazene (HCBCTP), poly{bis[4-(4′-decyloxy) biphenoxy]phosphazene} (PDBP), and poly{bis[4-(4′-cyano)biphenoxy] phosphazene} (PCBP) were synthesized from hexachlorocyclotriphosphazene or polydichlorophosphazene and the corresponding sodium alkoxide. Their phase transition and liquid crystalline state were then studied by differential scanning calorimetry (DSC) measurements and polarizing microscope observation. We found enantiotropic smectic C in HDBCTP between 431 and 457 K and monotropic nematic between 529 and 488 K in HCBCTP only in the cooling process. No mesomorphic state was found in PDBP and PCBP.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Engineering, Gifu University, Yanagido, 501-11, Gifu, Japan

    Keiichi Moriya, Shigeo Miyata & Shinichi Yano

  2. Department of Applied Chemistry, Faculty of Engineering, Nagoya University, 464, Chikusa, Nagoya, Japan

    Meisetsu Kajiwara

Authors
  1. Keiichi Moriya
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  2. Shigeo Miyata
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  3. Shinichi Yano
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  4. Meisetsu Kajiwara
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Moriya, K., Miyata, S., Yano, S. et al. The liquid crystalline state in organophosphazenes with biphenyl mesogenic groups. J Inorg Organomet Polym 2, 443–454 (1992). https://doi.org/10.1007/BF00701117

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  • DOI: https://doi.org/10.1007/BF00701117

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