Random copolymers (poly(BO_x-co-St_y)) consisting of boron dipyrromethene (BODIPY) monomer (BO) and styrene (St) were synthesized to achieve multi-color and efficient emission in the solid state using St as a spacer. The emission color of the resulting copolymers changed from green to red by changing the content of BO from 0.042 to 100 mol%. Fluorescence quantum yield (Φ_f) also increased with the content of St (Φ_f = 0.05–0.88) because the intermolecular distance between the BO fluorophores became longer. The absorption and fluorescence properties of the copolymers in tetrahydrofuran were similar and independent of the compositional ratios, and Φ_f was relatively high (0.65–0.81), which indicates that the intermolecular interaction between BO fluorophores in the same polymer chain is small due to the lack of BO fluorophore aggregation. However, emission color changes in the bulk powder were mainly derived from the intermolecular interaction between BO fluorophores in inter-polymer chains because the polymers were intertwined with each other in the solid state. When the polymers in the solid state were annealed, the emission spectra were red-shifted and Φ_f decreased. It was concluded that the emission color changes of the polymers were mainly induced by intermolecular interaction between BO fluorophores in the inter-polymer chains.

合成了由硼二吡咯亚甲基（BODIPY）单体（BO）和苯乙烯（St）组成的无规共聚物（poly（BO _x - co -St _y）），以St为间隔物可实现固态的多色高效发光。通过将BO的含量从0.042摩尔％改变为100摩尔％，所得共聚物的发光颜色从绿色变为红色。荧光量子产率（Φ _˚F）也与ST（含量增加Φ _˚F  = 0.05-0.88），因为BO荧光团之间的分子间距离变长。在四氢呋喃共聚物的吸收和荧光性质的组成比的相似和独立的，并且Φ _˚F相对较高（0.65-0.81），这表明由于缺少BO荧光团聚集，同一聚合物链中的BO荧光团之间的分子间相互作用很小。然而，散装粉末中的发射颜色变化主要是由于聚合物相互之间缠结在一起，因此，它们之间的相互作用主要是由于聚合物内链中BO荧光团之间的分子间相互作用所致。当在固态聚合物进行退火时，发射光谱的红移和Φ _˚F降低。可以得出结论，聚合物的发射颜色变化主要是由聚合物间链中BO荧光团之间的分子间相互作用引起的。