Abstract
Three aromatic silicon-containing poly(1,3,4-oxadiazole-amide) were synthesized by solution polycondensation reaction of aromatic diamines containing performed 1,3,4-oxadiazole ring with a diacid chloride incorporating diphenylsilane unit. All polymers are soluble in polar organic solvents such as N-methylpyrrolidinone, dimethylformamide or dimethylacetamide. Thin films having good mechanical properties were made by casting polymer solutions onto glass substrates. These polymers exhibit high molecular weights and narrow molecular weight distribution. They are highly thermally stable, their decomposition being above 415°C. Glass transition temperature (Tg) is within the range of 246-346°C. The values of Tg, tensile strength and elastic modulus were correlated with the conformational rigidity parameters. Absorption and photoluminescence properties were also measured and discussed. Keywords: aromatic silicon, poly(1,3,4-oxadiazole-amide), aromatic diamines