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Thermotropic liquid crystalline bimesogenic molecules with highly flexible oligosiloxane spacer

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Summary

A number of potentially mesomorphic ester derivatives of 4-allyloxybenzoic acid have been prepared. Bimesogenic molecules were synthesized by addition of the 4-allyloxymesogenic unit to α-dimethylsilanyl-ω-hidrogenooligodimethylsiloxane catalized by hexacloroplatinic acid. The thermal properties of this new series of thermotropic, liquid crystalline bimesogenic compounds were studied by differential scanning calorymetry (DSC) and polarized light microscopy. It was found that the length of the oligosiloxane spacer was the most important factor for the low transition temperature. The effects of structural changes on mesophase stability are also discussed.

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References

  1. Steinsträsser R., Z. Naturforsch. 276, 774 (1972).

    Google Scholar 

  2. Young, W.R., Haller I., Green D.C., J.Org.Chem.37, 3707 (1972)

    Google Scholar 

  3. Meier G., Sackmann E., Grabmaier J.G., Applications of Liquid Crystals, Sringer Verlag, N.York 1975.

    Google Scholar 

  4. Dewar M.J.S., Golberg R.S., J.Org.Chem.35, 2711 (1970).

    Google Scholar 

  5. Demus D., Demus H. Zaschke H., Flüssige Kristalle in Tabellen, VEB Deustscher Verlag für Grundstoffindustrie, Leipzig 1974.

    Google Scholar 

  6. Gray G.W., Winsor P.A., Liquid Crystals and Plastic Crystals Vol.1, John Wiley & Sons, Inc. London, New York 1974.

    Google Scholar 

  7. Patnode W., Wilcock D.F., J.Am.Chem.Soc. 68, 358 (1946).

    Google Scholar 

  8. Greber G., Metzinger L., Makromol.Chem. 39, 167 (1960).

    Google Scholar 

  9. Rochow E.G., Model F.S., Plaste Kaut. 15, 466 (1968).

    Google Scholar 

  10. Jon L.K., Robert U., Macromolecules 2, 525 (1969).

    Google Scholar 

  11. Aguilera C., Ringsdorf H., Schneller A., Zentel R., IUPAC International Symposium on Macromolecules, 1980 Florence, Italy. Preprints, Vol. 3 p. 306.

  12. Jo B.W., Jin J.I., Lenz R.W., Eur.Polym.J. 18, 233 (1982).

    Google Scholar 

  13. Aguilera C., Bartulín J., Hisgen B., Ringsdorf H., Makromol. 184, 253 (1983).

    Google Scholar 

Download references

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Authors and Affiliations

  1. Department of Polymer Science, The University of Akron, 44325, Akron, Ohio, USA

    C. Aquilera & L. Bernal

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  1. C. Aquilera
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  2. L. Bernal
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Aquilera, C., Bernal, L. Thermotropic liquid crystalline bimesogenic molecules with highly flexible oligosiloxane spacer. Polymer Bulletin 12, 383–388 (1984). https://doi.org/10.1007/BF00255422

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  • DOI: https://doi.org/10.1007/BF00255422

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