作者：Jiangping Xu, Wei Jiang
关键字：金纳米线, 聚合物胶体, 限域, 界面张力, 杂化胶体, 机械储能
论文来源：期刊
具体来源：Macromolecules, 2014, 47(7), 2396-2403
发表时间：2014年

摘要：在界面张力驱动下，将聚合物修饰的超细金纳米线（AuNWs）成功限域在球形、囊泡和圆柱形等聚合物纳米胶体中。AuNWs的限域形态显著依赖于限域空间的尺寸和形状，获得了一系列含弹性或非弹性扭曲AuNWs的结构化杂化胶体。通过溶剂溶胀聚合物壳层可实现弹性变形AuNWs的伸展，使杂化胶体可用于机械能储存与释放；单个限域AuNW的弹性势能和回弹力分别约为3.2×10-17 J和1.6×10-9 N。此外，研究还揭示了AuNWs表面分子壳的疏水性对界面张力及AuNWs卷曲行为的影响，为在乳液液滴中操控纳米材料提供了重要指导。

Abstract：Driven by the interfacial tension, polymer-tethered ultrathin gold nanowires (AuNWs) are successfully confined in polymeric nanocolloids, such as spheres, vesicles, and cylinders. The confined morphology of the AuNWs significantly depends on the size and the shape of the confined space. A series of structured hybrid colloids containing elastically or inelastically distorted AuNWs are obtained. Uncoiling the elastically deformed AuNWs can be realized through solvent swelling of the polymer shell, so the hybrid colloids can be applied for mechanical energy storage and release. The elastic potential and the resilience of a confined AuNW can be estimated to be 3.2×10-17 J and 1.6×10-9 N, respectively. Moreover, the hydrophobicity of the tethered molecular shell on the AuNWs has been studied to reveal the influence of interfacial tension on the coiling of the AuNWs, offering an important guideline for manipulating nanomaterials in emulsion droplets.

论文链接：https://doi.org/10.1021/ma4025448