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The synthesis and characterization of a mesomorphic brush type polycarbosilane: poly[1,1-bis(4′-biphenyl)silabutane]

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Summary

Poly[1,1-bis(4′-biphenyl)silabutane] (II) has been prepared by the anionic ring opening polymerization of 1,1-bis(4′-biphenyl)silacyclobutane. II shows mesomorphic behavior by DSC. The13C NMR T1 relaxation times have been measured. These are found to be smaller than those of poly(1,1-dimethylsilabutane)by an order of magnitude. This may result from interaction of the highly rigid biphenyl side chain moieties. The thermal stability of II is higher than that for other 1,1-disubstituted polysilabutanes.

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Authors and Affiliations

  1. D. P. and K. B. Loker Hydrocarbon Research Institute, Chemistry Department, University of Southern California, 90089-1661, CA, Los Angeles, USA

    Steven J. Sargeant, LeDon Bean, Mark A. Tapsak & William P. Weber

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  1. Steven J. Sargeant
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  2. LeDon Bean
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  3. Mark A. Tapsak
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  4. William P. Weber
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Sargeant, S.J., Bean, L., Tapsak, M.A. et al. The synthesis and characterization of a mesomorphic brush type polycarbosilane: poly[1,1-bis(4′-biphenyl)silabutane]. Polymer Bulletin 31, 279–283 (1993). https://doi.org/10.1007/BF00692952

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  • DOI: https://doi.org/10.1007/BF00692952

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