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Polynorbornene: synthesis, properties and simulations
Author(s) -
Haselwander Thomas F. A.,
Heitz Walter,
Krügel Stefan A.,
Wendorff Joachim H.
Publication year - 1996
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1996.021971029
Subject(s) - polymer chemistry , polymer science , materials science , chemistry
The vinylic polymerization of norbornenes upon catalysis with Pd 2+ complexes with norbornylnitrile as ligands is reported. The polynorbornenes ( M̄ w = 10 6 ) display a set of unique properties including a dense packing in the amorphous state, high glass transition temperatures, large refractive index, low birefringence and significant brittleness. To test the concept that these properties can be traced back to the conformational constraints of the polymer chains, we performed ab initio calculations, semi‐empirical quantum mechanical calculations and force‐field calculations employing a force field developed by us for polynorbornenes.