Interdisciplinary School of Green Energy, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea.
J Colloid Interface Sci. 2011 Apr 1;356(1):1-7. doi: 10.1016/j.jcis.2011.01.001. Epub 2011 Jan 7.
We demonstrate a simple route for preparing various micellar nanostructures, like spheres, cylinders, and vesicles, by spin-coating or drop-casting process of polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) copolymer solutions in pure tetrahydrofuran (THF), THF/water, and THF/ethanol mixture. Upon drying, a solvent selectivity plays an important role in determining micellar nanostructures in thin films. In solution, micellar sizes and shapes of these PS-b-P4VP copolymers were investigated by dynamic and static light scattering. Immediately after spin-coating the polymer solutions, surface and internal morphologies of the films were observed by atomic force microscopy and transmission electron microscopy. As the polymer concentration in THF or the amounts of water or ethanol added in THF solutions was varied, a remarkable difference in the PS-b-P4VP micellar morphologies was observed, from which spherical or cylindrical or vesicular micelles were developed. These micellar films were used as scaffolds or templates for fabricating metal nanodots or nanowires arrays.
我们展示了一种通过旋涂或滴铸聚苯乙烯-嵌段-聚（4-乙烯基吡啶）（PS-b-P4VP）共聚物在纯四氢呋喃（THF）、THF/水和 THF/乙醇混合物中的溶液，制备各种胶束纳米结构（如球体、圆柱和囊泡）的简单方法。在干燥过程中，溶剂选择性在确定薄膜中的胶束纳米结构方面起着重要作用。在溶液中，通过动态和静态光散射研究了这些 PS-b-P4VP 共聚物的胶束尺寸和形状。在旋涂聚合物溶液后，立即通过原子力显微镜和透射电子显微镜观察薄膜的表面和内部形态。随着 THF 中的聚合物浓度或加入 THF 溶液中的水量或乙醇量的变化，观察到 PS-b-P4VP 胶束形态有显著差异，从中可以开发出球形或圆柱形或囊泡状胶束。这些胶束薄膜可用作制造金属纳米点或纳米线阵列的支架或模板。
