含偶氮苯的有机微孔聚合物的合成与气体吸附

摘要

以甲基三(4-乙炔基苯基)硅烷、苯基三(4-乙炔基苯基)硅烷及4,4-二碘偶氮苯作起始单体,使用钯催化的Sonogashira-Hagihara偶联反应制备两种含偶氮苯结构的有机微孔聚合物材料.研究表明,所制备聚合物TEPM-Azo和TEPP-Azo的BET比表面积分别为205.5 m2/g与478.5 m2/g.对二氧化碳的吸附性能在1.13 bar/273 K条件下为1.14 mmol/g与1.17 mmol/g.此外它们还具有良好的选择吸附性能,对CO2/N2的选择吸附系数为48.98和53.57.%A series of azobenzene-based organic microporous polymers were synthesized by palladium-catalyzed Sonogashira-Hagihara coupling condensation reaction of tris(4-ethynylphenyl)methylsilane and tris(4-ethynylpheny)phenysilane monomers with 4,4'-diiodoazobenzene.Resulting polymers TEPM-Azo and TEPP-Azo exhibited moderate BET specific surface area of 205.5 m2/g and 478.5 m2/g with CO2 uptake capacity of 1.14 mmol/g and 1.17 mmol/g at 1.13 bar/273 K.The resulting polymers also exhibited moderate CO2-over-N2 selectivities of 48.98 and 53.57.