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以Pd(OAc)2/DABCO(三乙烯二胺)组成催化体系,运用Suzuki偶合法成功合成出聚-9,9-二辛基芴。结果表明,配体的用量、溶剂及弱碱的种类对反应的聚合度都有一定的影响。当催化剂与配体的摩尔比为1∶12,以甲苯和DMF为溶剂且体积比为1∶1,再以碳酸钾为弱碱,于110℃条件下反应12h可以得到高分子量的目标聚合物。
Pd (OAc) 2 / DABCO (triethylenediamine) was used as catalyst to synthesize poly-9,9-dioctylfluorene by Suzuki coupling. The results show that the amount of ligand, solvent and the type of base have a certain impact on the degree of polymerization of the reaction. When the molar ratio of catalyst to ligand is 1:12, the molar ratio of toluene to DMF is 1: 1, and potassium carbonate is weak base, the reaction is carried out at 110 ℃ for 12h to obtain the target polymer with high molecular weight .