使用聚合物稳定剂在1-4纳米范围内近单散黄金纳米颗粒的尺寸控制合成
Irshad Hussain1, Susan Graham, Zhenxin Wang
1Centre for Nanoscale Science, Department of Chemistry, The University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom.
Journal of the American Chemical Society
|November 25, 2005
概括
我们开发了一种简单的方法来制造小,均的金纳米粒子 (水溶<5nm). 颗粒大小可以通过调整聚合物度来调整,从而使醇配体进一步发挥功能.
科学领域:
- 纳米技术 纳米技术
- 材料科学 材料科学 材料科学
- 合体化学 合体化学
背景情况:
- 金纳米粒子表现出独特的光学和电子特性.
- 控制纳米粒子大小和单分散性对于应用至关重要.
- 现有的合成方法可能很复杂或缺乏精确的尺寸控制.
研究的目的:
- 开发一种简单的,单步协议,用于合成小金溶液 (<5 nm).
- 通过聚合物度来证明对纳米粒子大小的控制.
- 为了显示合成的水解盐与醇连接物交换的兼容性.
主要方法:
- 使用稳定聚合物的一步合成协议.
- 调整聚合物度以控制颗粒大小.
- 使用适当的技术 (隐含) 对黄金水溶的表征.
- 醇连接物交换以形成单层保护的集群.
主要成果:
- 成功制备了在<5 nm大小范围内的近单分散黄金水溶.
- 通过改变稳定聚合物度来证明可调节的颗粒大小.
- 证实了聚合物的可被醇配体取代.
结论:
- 报告的方法提供了一个简单而有效的途径,以小,大小控制的金纳米粒子.
- 该协议促进了黄金纳米颗粒的生产,用于进一步的表面修饰.
- 合成的黄金水溶是单层保护集群的多功能前体.
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