Polymerization of tripropargylamine by transition metal catalysts and molecular structure of poly(tripropargylamine)

✍ Scribed by Yeong-Soon Gal; Won-Chul Lee; Sam-Kwon Choi; Yun-Chul Kim; Bal Jung

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 549 KB
• Volume: 32
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(95)00181-6

✦ Synopsis

A

novel highly conjugated polymer with two cyclic recurring units per monomeric unit was prepared from tripropargylamine using various transition metal catalysts. WC&, PtCl,, and RuCl, were found to be effective catalysts, whereas the tungsten-based and molybdenum-based catalysts gave a low yield of polymer. In the polymerization by WC&, DMF, DMSO, and pyridine were found to be good solvents. The resulting polymers were brown or black powders and mostly insoluble in organic solvents regardless of the polymerization conditions and the catalysts used. The solid-state 13C-NMR spectrum of poly(tripropargylamine) showed the carbon peaks of the conjugated double bond on the polymer backbone at 1 lo-150 ppm, which had been absent in the monomer. The chemical structure of polymer had a quasi-helical characteristic (TG,). The calculated identity period was 11.97 A. Furthermore, this polymer possessed less than a three-dimensional order with a noncrystalline morphology.