Double ring-forming cyclopolymerization of tripropargylammonium salts by transition metal catalysts

Double ring-forming cyclopolymerization of tripropargylammonium monomers ha ving three polymerizable acetylene functionalities in the same monomer was carried out by various transition metal catalysts such as MoCl5-EtAlCl2, WC l6-EtAlCl2, PdCl2, PtCl2, RuCl3, etc. In general, the polymerization procee ded well to give a relatively high yield of polymers. Poly(tri-propargylamm onium tosylate) and poly(tripropargyl-ammonium tetraphenylborate), having b ulky counter anions such as tosylate and tetraphenylborate, were generally soluble in such organic solvents as DMF, DMSO, and formic acid, whereas the poly(tripropargylammonium bromide) having Br- as counter anion was insolub le in any organic solvents. The instrumental analyses shows that the result ing poly(tripropargylammonium salt)s have a highly conjugated polymer backb one system having such counter ions as bromide, tosylate, and tetraphenylbo rate. Thermal and morphological properties of the polymers were also studie d by TGA/DSC and X-ray diffraction analytical method.