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New synthetic routes towards polyphosphazenes
Author(s) -
Matyjaszewski Krzysztof,
Cypryk Marek,
Dauth Jochen,
Montague Robert,
White Michael
Publication year - 1992
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19920540105
Subject(s) - phosphine , azide , chemistry , catalysis , condensation polymer , silylation , polymer , polyphosphazene , reactive intermediate , polymer chemistry , combinatorial chemistry , organic chemistry
Abstract Two new methods for the synthesis of polyphosphazenes are described. The first is based on the catalyzed polycondensation of phosphoranimines using various catalysts and initiators. Certain mechanistic aspects of this process with reactive intermediates are discussed. Linear polymers are formed quantitatively at temperatures around 100 °C in a few hours (the thermal process requires a few days at 200 °C). The second method is based on the direct reaction between phosphonites and phosphinites with silyl azides. This reaction proceeds by phosphine azide intermediates and provides new polyphosphazenes.