CYCLOPOLYMERIZATION OF TRIPROPARGYLAMMONIUM BROMIDE BY TRANSITION-METAL CATALYSTS

A novel conjugated polymeric salt having two cyclic recurring units pe r monmeric unit was prepared by the cyclopolymerization of tripropargy lammonium bromide(TPAB) with transition metal catalysts. PdCl2, PtCl2, MoCl5, WCl6-based catalysts were found to be effective for the polyme rization of TPAB. The obtained poly(TPAB)s were insoluble in any organ ic solvent regardless of the polymerization catalysts and conditions u sed. The IR spectra of poly(TPAB) showed neither the acetylenic hydrog en nor the carbon-carbon triple bond stretching frequencies. Instead, the carbon-carbon double bond stretching frequency in the polymer back bone at 1640 cm-1 indicated a highly conjugated unsaturation. The ther mal and morphological properties of poly(TPAB) were also studied.