High molecular weight poly([ 1.1.1]propellane)s and a new polyamide with bicyclo[1.1.1]pentane fragments


  • We thank Prof. G. Wegner, Mainz, for his interest in this work, Dr. M. Schmidt, Bayreuth, and his group for the molecular weight determinations, T. Vahlenkamp and C. Mathauer for the Langmuir–Blodgett experiments and finally N. Egger for the CPMAS-NMR spectrum


Communication: A polyamide, where the amide functions are connected via rigid, non-aromatic units, which forms liquid-crystalline phases in concentrated sulfuric acid and is thus suitable for the preparation of fibers is reported. The synthesis has been made possible by a breakthrough in the ability to produce high molecular weight poly([1.1.1]-propellane)s (see Figure).

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