Neuse, Eberhard W.; Horlbeck, Gernot; Siesler, Heinz W.; Yannakou, Kleanthes:
Cobalticenium-bridged polybenzazoles. 1. Low temperature solution polymerization.
1976
In: Polymer (Polymer), Jg. 17 (1976), Heft 5, S. 423 - 428
Artikel/Aufsatz in Zeitschrift / Fach: Chemie
Titel:
Cobalticenium-bridged polybenzazoles. 1. Low temperature solution polymerization.
Autor(in):
Neuse, Eberhard W.; Horlbeck, Gernot; Siesler, Heinz W. im Online-Personal- und -Vorlesungsverzeichnis LSF anzeigen; Yannakou, Kleanthes
Erscheinungsjahr
1976
Erschienen in:
Polymer (Polymer), Jg. 17 (1976), Heft 5, S. 423 - 428
ISSN

Abstract:

Low mol. wt. amide-linked 1,1'-bis(chlorocarbonyl)cobalticenium chloride-1,1'-bis(chlorocarbonyl)cobalticenium hexafluorophosphate-3,3'-diaminobenzidine copolymer (I) and amide- and thioester-linked 1,1'-bis(chlorocarbonyl)cobalticenium chloride-1,1'-bis(chlorocarbonyl)cobalticenium hexafluorophosphate-3,3'-dimercaptobenzidine copolymer (II) [60311-17-3] were prepd. by low-temp. soln. polymn. The Cl ions in I and II were substituted by PF6 by pptn. from NH4PF6-HCO2H. The 4 copolymers underwent cyclization at <300 Deg, e.g. I and II gave bibenzimidazole polymer III and bibenzothiazole polymer IV. The cyclized polymers had thermal stability and soly. inferior to those of phenylene-bridged bibenzimidazoles.