Nanoscale Lacing by Electrons,Small

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Nanoscale Lacing by Electrons
Small ( IF 13.0 ) Pub Date : 2018-04-17 , DOI: 10.1002/smll.201800598
Han-Wen Cheng _{1,

2} , Jie Wang ₃ , Yong-Jun Li ₂ , Jing Li ₂ , Shan Yan ₂ , Shiyao Shan ₂ , Lingyan Wang ₄ , Zakiya Skeete ₂ , Chuan-Jian Zhong ₂

Affiliation

The ability to harness the optical or electrical properties of nanoscale particles depends on their assembly in terms of size and spatial characteristics which remains challenging due to lack of size focusing. Electrons provide a clean and focusing agent to initiate the assembly of nanoclusters or nanoparticles. Here an intriguing route is demonstrated to lace gold nanoclusters and nanoparticles in string assembly through electron‐initiated nucleation and aggregative growth of Au(I)‐thiolate motifs on a thin film substrate. This size‐focused assembly is demonstrated by controlling the electron dose under transmission electron microscopic imaging conditions. The Au(I)‐thiolate motifs, in combination with the molecularly mediated alignment, facilitate the interstring electrostatic and intrastring aurophilic interactions, which functions as a molecular template to aid electron‐initiated 1D lacing. The findings demonstrate a hierarchical route for the 1D assemblies with size and spatial tunable catalytic, optical, sensing, and diagnostic properties.

中文翻译：

电子纳米尺度的绑扎

利用纳米级颗粒的光学或电学性质的能力取决于它们在尺寸和空间特性方面的组装，这由于缺乏尺寸聚焦而仍然具有挑战性。电子提供清洁和聚焦剂以启动纳米团簇或纳米颗粒的组装。在这里，通过电子引发的成核作用和在薄膜基底上的Au（I）-硫醇盐基序的聚集生长，将金纳米团簇和纳米粒子束缚在字符串组装中，这是一条引人入胜的途径。通过在透射电子显微镜成像条件下控制电子剂量来演示这种尺寸集中的组件。Au（I）-硫醇盐基序与分子介导的比对相结合，可促进弦间静电和弦内亲性相互作用，它可作为分子模板来辅助电子引发的一维系带。研究结果证明了具有尺寸和空间可调催化，光学，传感和诊断特性的一维组件的分层路线。

更新日期：2018-04-17

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