THIOPHENE CONTAINING SCHIFF-BASES OLIGOMERS AND POLYMERS - SYNTHESIS,CHARACTERIZATION AND PROPERTIES

By reaction of the 2,5-dicarboxaldehyde and certain 2,5-diketo derivat ives of thiophene and 3-alkylthiophenes with hydrazine in toluene, we have obtained a new family of air-stable polymeric azines. Oligomers a nd polymers were separated by extraction with different solvents and c haracterized by molecular weight determinations, vibrational and elect ronic spectroscopy and thermal analysis. A major feature of the polyme rs containing butyl groups is their complete solubility, the other mat erials being insoluble in the common solvents to a large extent.