Formation of a highly ordered dot array of surface micelles of a block copolymer via liquid crystal-hybridized self-assembly
Formation of a highly ordered dot array of surface micelles of a block copolymer via liquid crystal-hybridized self-assembly
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DOI：
10.1021/la060350k
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发表时间：
2006-06-06
期刊：
影响因子：
3.9
通讯作者：
Seki, Takahiro
中科院分区：
文献类型：
--
作者：
Nagano, Shusaku;Matsushita, Yu;Seki, Takahiro
两亲嵌段共聚物聚苯乙烯-嵌段-聚（4-乙烯基吡啶）（PS-4VP）通过与液晶分子4′-戊基-4-氰联苯（5CB）的杂交，在水中形成了一种高度有序的表面胶束点阵列模式。PS- 4vp与5CB的简单共展提供了一个平坦均匀的PS- 4vp单层在水中，没有PS块的聚集。随着表面压力的增加，PS块的明确点开始生长并排列成高度有序的六边形结构。在压缩和膨胀过程中，杂化单层的表面压力-面积曲线的精确重合证实了平面铺展单层和点阵是在平衡状态下通过自组装过程在水面上形成的。
A highly ordered dot array pattern of surface micelles on water is formed by a spread monolayer of an amphiphilic block copolymer, polystyrene-block-poly(4-vinylpyridine) (PS-4VP), via hybridization with a liquid crystal molecule, 4'-pentyl-4-cyanobiphenyl (5CB), on water. Simple co-spreading of PS-4VP with 5CB provides a flat homogeneous monolayer of PS-4VP on water without the aggregation of PS blocks. With increasing surface pressure, well-defined dots of the PS blocks start to grow and are arrayed in a highly ordered hexagonal structure. The exact coincidence of the surface pressure-area curves for the hybrid monolayer in the compression and expansion processes confirms that the flat spread monolayer and the dot array are formed on water in the equilibrium state by a self-assembly process.