一种烷氧基取代聚对苯乙炔三元共聚物的合成与性能

Synthesis and Properties of a Terpolymer of Poly(Phenylene Vinylene) with Alkoxyl Substituents

采用强碱诱导的脱氯化氢缩合聚合法合成一种可溶性不对称烷氧基取代聚对苯乙炔三元共聚衍生物聚[2-甲氧基-5-(3′-甲基)丁氧基对苯乙炔-co-2-甲氧基-5-己氧基对苯乙炔-co-2-甲氧基-5-辛氧基对苯乙炔][P(MOMBOPV-co-MOHOPV-co-MOCOPV)]。研究表明,三元共聚物在三氯甲烷中具有良好的溶解性,利于成膜,其在400 nm^560 nm存在显著吸收,最大吸收波长位于500 nm处。热性能研究表明,其热稳定性良好,起始分解温度约为370℃,玻璃化温度为95℃。荧光光谱研究表明,P(MOM-BOPV-co-MOHOPV-co-MOCOPV)具有优良的光致发光性能,其最大发射波长为645 nm,荧光寿命为1.3 ns。

A soluble terpolyrner P （MOMBOPV-∞-MOHOPV-∞-MOCOPV） was synthesized through dehydrochlorination reaction. The results indicate that terpolyrner shows good solubility in chloroform and easily forms film. P （MOMBOPV-∞-MOHOPV-∞-MOCOPV） has prominent absorption between 400 nm and 560 nm, and its maximum absorption wavelength is located in 500 nm. The terpolyrner has good thermal stability, the initial decomposition temperature and glass transition temperature of P（MOMBOPV-∞-MOHOPV-∞-MOCDPV） is about 370℃ and 95℃, respectively. The photoluminescence spectrum shows that terpolymer is a good photoluminescence polymer. The maximum emission wavelength of P（MOMBOPV-∞-MOHOPV-∞-MOCOPV） is 645 nm and its fluorescence lifetime is 1.3 ns.