A series of benzene-co-fluorene copolymers were synthesized via solid-state oxidative coupling polymerization using FeCl₃ as the oxidation catalyst. The structural characterization results confirm that the products are random copolymers composed of 1,4-linked phenylene units and 2,7-linked fluorene units. All the copolymers exhibited good thermal stability. The DSC and XRD results showed that the crystallization of copolymers increased with the increasing fluorene units in the backbones. The relationships among molecular structure, condensed-state structure, and photophysical properties of these polymers were investigated by UV–vis absorption spectroscopy and photoluminescence spectroscopy. The optical properties could be adjusted by using different ratios of fluorene and dibutoxybenzene. Moreover, the polymer concentrations and states affected the emission properties of copolymers. This can be attributed to the change in the effective conjugation length of single polymer and the formation of polymer aggregates and excimers. These unique properties endow the benzene-co-fluorene copolymers with potential applications in optoelectronics.

使用FeCl ₃进行固态氧化偶联聚合，合成了一系列苯-共芴共聚物作为氧化催化剂。结构表征结果证实产物是由1，4-连接的亚苯基单元和2，7连接的芴单元组成的无规共聚物。所有共聚物均表现出良好的热稳定性。DSC和XRD结果表明，共聚物的结晶随着骨架中芴单元的增加而增加。通过紫外可见吸收光谱和光致发光光谱研究了这些聚合物的分子结构，凝聚态结构和光物理性质之间的关系。可以通过使用芴和二丁氧基苯的不同比例来调节光学性质。此外，聚合物的浓度和状态影响共聚物的发射性能。这可以归因于单一聚合物的有效缀合长度的变化以及聚合物聚集体和准分子的形成。这些独特的性能使苯-共芴共聚物在光电领域具有潜在的应用前景。