Copolymer based on pyrrolodiindole and preparation method and application of copolymer

The invention discloses a copolymer based on pyrrolodiindole and a preparation method and application of the copolymer. The copolymer is as shown in formulae (1)-(8) as shown in the specification. A preparation mode is based on a Suzuki coupling polymerization reaction of a monomer of formula M1 and a biborate monomer of formula M2, or a Stille coupling polymerization reaction of the monomer of formula M1 and a bitin monomer of formula M3, or a bitin monomer of formula M4 and a bibromine monomer of formula M5. The polymerization route is simple and efficient, wide in raw material supply, low in synthesis cost and very good in universality and repeatability, and the polymer material has good application potential in polymer solar batteries and other organic photoelectric functional materials. 本发明公开了种基于吡咯并二吲哚的共聚物及其制备方法与应用。该类共聚物如式(1)-(8)所示，其制备方式是基于式M1所示单体与式M2所示双硼酸酯单体间进行的Suzuki偶联聚合反应或者是基于式M1所示单体与式M3所示的双锡单体间，亦或者是基于M4所述的双锡单体与式M5所示的双溴单体间进行的Stille偶联聚合反应，该聚合路线简单高效、原料供应广泛、合成成本低，具有很好普适性和高重复性，这类聚合物材料在聚合物太阳能电池及其它有机光电功能材料中