Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, PR China.
Langmuir. 2010 Jun 15;26(12):10102-10. doi: 10.1021/la1002308.
Novel curly nickel carbonate hydrate film superstructures can be prepared for the first time via a facile drying process of the films formed on air/solution interface in the presence of double hydrophilic copolymer or polyelectrolyte additives. As-prepared curly film patches with average edge sizes of several hundred micrometers display adjustable curly features along different orientation. The coiling up degree of the film edges is strongly dependent on the polymer concentration in bulk solution. Most of these curly structures have a relatively smooth outer surface; however, the microstructures of the outer surface of curly films formed show porous network-like features. In addition, using different kinds of nickel salts can produce distinct curly film samples. A possible formation mechanism of the curly film structure has been proposed. The multiple interaction modes between nickel salt precursors and polymer can favor the self-organization of the film formed at the air/solution interface. This approach is expected to be extended for producing a variety of curly hierarchical structures.
新型卷曲镍碳酸盐水合物超结构可通过在双亲水共聚物或聚电解质添加剂存在下在空气/溶液界面上形成的薄膜的干燥过程来首次制备。所制备的具有几百微米平均边缘尺寸的卷曲膜片在不同方向上显示出可调的卷曲特征。膜边缘的卷曲程度强烈依赖于本体溶液中的聚合物浓度。这些卷曲结构中的大多数具有相对光滑的外表面；然而，卷曲膜形成的外表面的微观结构显示出多孔网状特征。此外，使用不同种类的镍盐可以产生不同的卷曲膜样品。提出了卷曲膜结构的可能形成机制。镍盐前体和聚合物之间的多种相互作用模式有利于在空气/溶液界面形成的膜的自组织。预计这种方法将扩展到生产各种卷曲的分层结构。
