【摘要】 以两端溴化的聚9,9-二己基芴作为大分子引发剂,6-O-甲基丙烯酰基-1,2:3,4-二-O-异亚丙基-D-吡喃型半乳糖(6-O-Methacryloyl-1,2:3,4-di-O-isopropylidene-D-galactopyranose,MaIpGa)为单体,氯化亚铜/1,1,4,7,10,10-六甲基三乙基四胺为催化剂,通过原子转移自由基聚合(ATRP),合成了一种新型的具有良好光学性能的三嵌段共聚物聚甲基丙烯酸羟基保护半乳糖酯-聚芴-聚甲基丙烯酸羟基保护半乳糖酯(PMaIpGa-PF-PMaIpGa).在酸性条件下进一步水解,得到水溶性的聚甲基丙烯酸半乳糖酯-聚芴-聚甲基丙烯酸半乳糖酯(PMaGa-PF-PMaGa)三嵌段聚合物,其结构和分子量(分布)通过核磁共振、红外光谱和凝胶渗透色谱(GPC)确证,并研究了其紫外-可见和荧光光谱特性.更多还原

【Abstract】 A novel well-defined amphiphilic copolymer was prepared via atom transfer radical polymerization(ATRP) with 2-bromoisobutyrate-capped poly(9,9-dihexylfluorene) as macroinitiator and CuCl/HMTETA(1,1,4,7,10,10-hexamethyltriethylenetetramine) as the catalyst.The molecular weight and molecular distribution were well controlled,implying well-defined block structure of the prepared block copolymer.The chemical structure of the copolymer of PMaIpGa-PF-PMaIpGa was confirmed via 1H NMR,FTIR and GPC.The copolymer could be successfully deprotected,and the final conjugated-carbohydrate block was found to be soluble in water.UV and PL spectra were also studied.更多还原