以 CF(3)COOAg 为前驱体，简便合成了边长为 30 至 70nm 的 Ag 纳米立方体。
Facile synthesis of Ag nanocubes of 30 to 70 nm in edge length with CF(3)COOAg as a precursor.
机构信息
Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, USA.
出版信息
Chemistry. 2010 Sep 3;16(33):10234-9. doi: 10.1002/chem.201000341.
Abstract
This paper describes a new protocol to synthesize Ag nanocubes of 30 to 70 nm in edge length with the use of CF(3)COOAg as a precursor to elemental silver. By adding a trace amount of NaSH and HCl to the polyol synthesis, Ag nanocubes were obtained with good quality, high reproducibility, and on a scale up to 0.19 g per batch for the 70 nm Ag nanocubes. The Ag nanocubes were found to grow in size at a controllable pace over the course of synthesis. The linear relationship between the edge length of the Ag nanocubes and the position of localized surface plasmon resonance (LSPR) peak provides a simple method for finely tuning and controlling the size of the Ag nanocubes by monitoring the UV/Vis spectra of the reaction at different times.
摘要
本文描述了一种使用 CF3COOAg 作为元素银前驱体合成边长为 30 至 70nm 的 Ag 纳米立方体的新方法。通过在多元醇合成中添加痕量的 NaSH 和 HCl，可以获得具有良好质量、高重现性的 Ag 纳米立方体，并且可以将 70nm Ag 纳米立方体的批次放大至 0.19g。研究发现，Ag 纳米立方体在合成过程中可以以可控的速度增大尺寸。Ag 纳米立方体的边长与局域表面等离子体共振（LSPR）峰位置之间的线性关系为通过在不同时间监测反应的 UV/Vis 光谱来精细调整和控制 Ag 纳米立方体的尺寸提供了一种简单的方法。
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