Nanoparticles with well-ordered structures have attracted great attention recently due to its potential application, including data storage media, microelectronics and sensors. Herein, we report a strategy of the periodic arrays of iron oxide nanoparticle with supramolecular thin films. The thin films of PS-b-P2VP/FAA supramolecules were solvent-vapor annealed with mixed solvent-vapor condition of toluene: ethanol: water = 9: 1: 0.06 in volumetric ratio. The supramolecular thin film exhibited the structural change of disorder – vertical cylinder – vertical lamellae – mixture (cylinder and lamellae) - cylindrical morphology triggered by the addition of small amount of water due to the change of the solvent selectivity with major block depending on time, leading to the periodic arrays of iron oxide nanoparticle. We expect that this result can provide key information to fabricate the self-assembled naostructure of block copolymers by using the solvent-vapor processing without complicated procedures.

具有良好有序结构的纳米颗粒由于其潜在的应用而最近引起了极大的关注，包括数据存储介质，微电子学和传感器。在这里，我们报告与超分子薄膜的氧化铁纳米粒子的周期性阵列的策略。PS- b的薄膜-P2VP / FAA超分子在甲苯：乙醇：水＝ 9∶1∶1∶0.06（体积比）的混合溶剂-蒸气条件下进行溶剂-蒸气退火。超分子薄膜表现出无序的结构变化-垂直圆柱-垂直薄片-混合物（圆柱和薄片）-圆柱状形态是由于溶剂选择性随时间的变化随主要嵌段的变化而添加少量水而触发的，导致氧化铁纳米粒子的周期性阵列。我们希望该结果可以提供关键信息，以通过使用溶剂-蒸气工艺来制备嵌段共聚物的自组装结构，而无需复杂的过程。