设计合成了一种含甲基噁二唑功能基的聚炔材料聚(2-对甲基苯基-5-对乙炔基苯基-1,3,4-噁二唑)。对制得的聚合物和单体进行FT-IR、~(1)H-NMR、紫外、荧光和热重(TGA)表征及Z扫描(Z-scan)技术评价,结果表明:聚(2-对甲基苯基-5-对乙炔基苯基-1,3,4-噁二唑)在失重5%时,热分解温度为389℃,较之单体(312℃)有较大提高,热性能较好;非线性吸收系数为-1.53×10~(-10)cm/W,非线性折射率为4×10~(-17)cm~2/W,三阶非线性极化率为3.00×10~(-11)esu,三阶非线性光学性能良好,与侧链烷氧基取代的噁二唑聚炔相比性能显著提高。 Poly (2-p-methylphenyl-5-p-ethynylphenyl-1,3,4-oxadiazole), a polyacetylene material containing methyl oxadiazole functional groups, was designed and synthesized. The obtained polymers and monomers were evaluated by FT-IR, ~ (1) H-NMR, UV, FTIR and Z-scan techniques. P-methylphenyl-5-p-ethynylphenyl-1,3,4-oxadiazole) had a thermal decomposition temperature of 389 ° C at a weight loss of 5%, which was significantly higher than that of the monomer (312 ° C) The nonlinear absorption coefficient is -1.53 ​​× 10 ~ (-10) cm / W, the nonlinear refractive index is 4 × 10 ~ (-17) cm ~ 2 / W, the third-order nonlinear polarizability is 3.00 × 10 ~ (-11) esu, the third-order nonlinear optical properties are good, and side-chain alkoxy-substituted oxadiazole polyacetylene significantly improved performance.