School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
Small. 2010 Dec 6;6(23):2708-15. doi: 10.1002/smll.201001084.
A systematic study on the synthesis of a series of self-assembled suprastructures, such as cubes, stars, belts, and microspheres, of Ag nanoparticles (AgNPs) in borosilicate glassware heavily cleaned with aqua regia is presented. These self-assembled structures are mostly formed from the crystallographically iso-oriented AgNPs, and exhibit well-defined shapes. In regular washed glassware, only Ag nanowires are synthesized. The formation mechanisms of these self-assembled Ag structures, based on monitoring of their structural evolution in glassware decorated with different molecules, are proposed. This work not only demonstrates that the surface energy of glassware can affect chemical synthesis, but also provides an interesting approach to the shape-controlled synthesis of novel self-assembled suprastructures of AgNPs, which could be potentially used as synthesis templates, drug vessels, and microreactors.
本文系统研究了在经王水重度清洁的硼硅酸盐玻璃器皿中合成一系列自组装超结构，如立方体形、星形、带状和微球形银纳米颗粒（AgNPs）。这些自组装结构主要由结晶各向同性的 AgNPs 形成，并呈现出良好的规则形状。在常规清洗的玻璃器皿中，仅能合成 Ag 纳米线。基于对不同分子修饰的玻璃器皿中结构演变的监测，提出了这些自组装 Ag 结构的形成机制。本工作不仅证明了玻璃器皿的表面能可以影响化学合成，而且为 AgNPs 新型自组装超结构的可控合成提供了一种有趣的方法，这些超结构可能作为合成模板、药物容器和微反应器来使用。
