【摘要】 探索了纳米孔阵列模板制备的新技术———一种基于电场作用下嵌段共聚物薄膜的自组装。采用阴离子聚合技术,以苯乙烯(St)和甲基丙烯酸甲酯(MMA)为单体制备了一定嵌段比例的二嵌段共聚物P(St-b-MMA)。GPC分析表明其分子量为23000~49000、分子量分散度在1.06~1.2,1H NMR、FTIR等分析表明共聚物具有嵌段结构成分。共聚物离心涂膜并在电场作用下的自组装,选择性地刻蚀后获得了可控的纳米尺寸孔洞的阵列,SEM、AFM、UV-vis等分析表明阵列模板中孔洞大小为25~800nm,孔密度可达4×108/cm2。更多还原

【Abstract】 Based on the preparation of the diblock copolymers of styrene(St) and methyl methacrylate(MMA) via sequential anionic polymerization,the well-defined nanoarray templates were created by molecular self-assembly of diblock copolymer controlled by electric fields.GPC analysis indicated that the molecular weight of the diblock copolymers was form 23000 to 49000,and the poly dispersity was from 1.06 to 1.2.Beginning with the oriented copolymer films,well-controlled nanoarray templates were obtained after selective etching processes.SEM,AFM and UV-vis analysis showed that the sizes of nanoholes were from 25 to 800nm,and the nanoarray density was about 4×10~8/cm~2.更多还原