蓝紫光支化聚吡咯衍生物的制备及发光特性

Preparation and luminescence properties of branched polypyrrole derivatives emitting blue-violet light

开发新一代的绿色节能照明器件是落实我国“双碳”战略目标的重要举措。聚吡咯及其衍生物是一类蓝紫光聚合物材料,因光电性能突出而备受关注。以N-甲基吡咯和4种单醛基苯甲醛为线形单体,对苯二甲醛为支化单体,采用溶液共缩聚法制备了4种可溶的、低结晶度的蓝紫光支化聚吡咯衍生物。研究表明,该类衍生物在268nm和358nm左右有明显的紫外-可见吸收峰;在355nm左右紫外光的激发光下,该类衍生物能发射出约为430nm的可见光,属于蓝紫光材料。该类支化聚吡咯衍生物可用作聚合物发光材料,在发光二极管领域中有着良好的应用前景。

The development of a new generation of green energy-saving lighting devices is the implementation of China's " carbon peak and carbon neutral" strategic goals.Polypyrrole and its derivatives are a kind of blue-violet polymer materials,which have attracted much attention due to their outstanding photoelectric properties.Four kinds of soluble blue-violet branched polypyrrole derivatives with low crystallity were prepared by solution co-condensation polymerization,using N-methylpyrrole and four monaldehydebenzaldehyde as linear monomers,and terephthalaldehyde as branched monomers.The results show that the UV-Vis absorption peaks of the derivatives are obvious at 268nm and 358nm.Under the excitation light of about 355nm ultraviolet light,the derivatives can emit visible light of about 430nm,which are blue-violet light materials.The types of branched polypyrrole derivatives can be used as polymer light-emitting materials,and have a good application prospect in the field of light-emitting diodes.