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以芴和季戊四醇为初始物,分别合成了具有芴共轭单元和季戊四醇多臂结构的两种聚合单体,进一步采用Suzuki反应合成出一种结构新颖的部分共轭结构的超支化聚合物.利用紫外吸收光谱和荧光发射光谱对聚合物予以表征,结果表明,超支化聚合物具有与模型化合物分子相似的发光行为,既可以发出纯正的蓝光,又表现出支化结构对荧光发射的影响.差热和热重分析表明,该聚合物的玻璃化转变温度为136℃,且在300℃以内没有明显的热分解,因而该聚合物具有良好的热稳定性.
Two fluorene and pentaerythritol as starting materials were synthesized, respectively, with fluorene conjugated units and pentaerythritol multi-arm structure of the two monomers were synthesized by Suzuki reaction and a new structure of the partially conjugated structure of hyperbranched polymers. UV absorption spectrum and fluorescence emission spectrum were used to characterize the polymer. The results showed that the hyperbranched polymer possessed similar luminescence properties to the model compound molecules, which could not only emit pure blue light, but also show the influence of branched structure on the fluorescence emission. Thermal and thermogravimetric analyzes showed that the polymer had a glass transition temperature of 136 ° C and no significant thermal decomposition within 300 ° C, so that the polymer had good thermal stability.