Development of New Synthetic Method for Block Copolymers of Controlled Molecular Weights.

目前的研究是开发一种新的方法来合成具有控制分子量的新型定制嵌段共聚物。结果表明：(1)在铝卟啉引发剂下，甲基丙烯酸酯与环氧化物和内酯依次进行活性聚合，合成了聚（甲基丙烯酸酯）聚醚嵌段共聚物和窄分子量分布的聚-聚酯嵌段共聚物；(2)在光驱动下，聚硫醚和环氧化物与锌n取代卟啉进行活性聚合，合成了聚醚和聚硫醚嵌段共聚物。(3)发展了甲基丙烯酸酯与铝卟啉的高速活性聚合，如甲基铝2,6 -二取代苯酚；(4)通过在外围苯基的所有邻位上引入极性取代基，如氯和甲氧基，设计了高活性的铝四苯基卟啉引发剂。

The present research is to develop a novel method for the synthesis of novel tailored block copolymers of controlled molecular weights.The results include the (1) synthesis of block copolymers of poly (methacrylic esters) polyethers and - polyesters of narrow molecular weight distributions, by the sequential living polymerizations of methacrylic esters and epoxides and lactones, respectively, with aluminum porphyrin initiators, (2) synthesis of block copolymers consisting polyethers and polythioethers by the photo-driven living polymerization of episulfides and epoxides with zinc N-substituted porphyrins, (3) development of high-speed living polymerization of methacrylic esters with aluminum porphyrins assisted by bulky Lewis acids such as methylaluminum 2, 6-disubstituted phenolates, (4) molecular design of highly active aluminum tetraphenylporphyrin initiators by introducing polar substituents such as chlorine and methoxy groups into all the ortho positions of the peripheral phenyl groups.