Nagano Shusaku, Matsushita Yu, Ohnuma Yuki, Shinma Satoshi, Seki Takahiro
Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan, CREST-JST, Japan.
Langmuir. 2006 Jun 6;22(12):5233-6. doi: 10.1021/la060350k.
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.
两亲性嵌段共聚物聚苯乙烯-嵌段-聚（4-乙烯基吡啶）（PS-4VP）在水面上形成的单层膜，通过与液晶分子4'-戊基-4-氰基联苯（5CB）在水面上杂交，形成了高度有序的表面胶束点阵图案。PS-4VP与5CB简单共铺展可在水面上形成PS-4VP的平整均匀单层膜，而不会出现PS嵌段的聚集。随着表面压力的增加，PS嵌段的清晰点阵开始生长，并排列成高度有序的六边形结构。混合单层膜在压缩和膨胀过程中的表面压力-面积曲线完全重合，证实了平整铺展的单层膜和点阵是通过自组装过程在水面上以平衡态形成的。
