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采用“A2+B2+B3”方法,通过Pd(0)催化的Suzuki聚合反应制备了一系列的超支化梯形共轭聚合物.所制备的聚合物荧光发射均在蓝光发射区.随着支化度的增加,聚合物的荧光发射和紫外吸收均有蓝移的趋势.超支化结构在一定程度上抑制分子间的聚集,使得聚合物在薄膜中的发射和吸收相对于溶液中的发射和吸收红移比较小.所制备的聚合物都表现出了良好的热稳定性,热分解温度都在320℃以上,DSC二次加热曲线在35～300℃之间没有玻璃化转变和其它的热力学过程.超支化共轭聚合物有望成为一种良好的蓝光材料.
A series of hyperbranched and trapezoidal conjugated polymers were prepared by Pd (0) catalyzed Suzuki polymerization using the “A2 + B2 + B3” method. The fluorescence emission of the prepared polymers was in the blue light emitting region Branching degree increases, the fluorescence emission and UV absorption of polymers both have a blue-shifted tendency.The hyperbranched structure to some extent inhibit the aggregation between molecules, making the emission and absorption of polymer in the film relative to the emission in solution And the absorption red shift is relatively small.The prepared polymer showed good thermal stability, the thermal decomposition temperature is above 320 ℃, DSC secondary heating curve between 35 ~ 300 ℃ without glass transition and other Thermodynamic Processes Hyperbranched conjugated polymers are expected to be a good blue material.