折叠诱导组装的聚化物装饰的金纳米颗粒
Daniel Aili1, Karin Enander, Johan Rydberg
1Division of Sensor Science and Molecular Physics, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden.
Journal of the American Chemical Society
|April 3, 2008
概括
合成的多控制金纳米粒子组装通过诱导的折叠和二元化. 这种可逆的过程允许控制纳米颗粒的聚合和再分散,为纳米材料设计提供了新的可能性.
科学领域:
- 超分子化学 超分子化学
- 纳米技术纳米技术
- 合成生物学 合成生物学
背景情况:
- 控制纳米粒子组装对于开发先进的纳米材料至关重要.
- 新设计的合成多提供可编程的分子相互作用.
- 金属离子协调可以触发设计中的构造变化.
研究的目的:
- 为了展示由多折叠控制的可逆黄金纳米粒子组件.
- 调查合成聚在纳米粒子聚合中的诱导的二分化和折叠的作用.
- 探索工程的潜力,用于可调节的纳米材料自组装.
主要方法:
- 在金纳米颗粒上固定一个新设计的合成多.
- 使用离子诱导聚折叠和纳米粒子聚合.
- 通过用EDTA对离子进行合,扭转聚合的过程.
- 使用含有D和L氨基酸的参考来确认折叠的作用.
主要成果:
- 离子诱导了螺旋环螺旋四螺旋捆折叠和固定聚的二元化,导致快速的金纳米粒子聚合.
- 在用EDTA去除离子后,聚合是完全可逆的.
- 一个不能折叠的参考没有诱导聚合,证实了多形状的重要性.
- 的功能化显示了与黄金纳米颗粒相比较的表面密度和方向.
结论:
- 纳米粒子组装可以通过利用固定合成多的折叠和二元化来精确控制.
- 这项研究建立了一种可逆,刺激响应的纳米粒子聚合方法.
- 这些发现为设计基于编程分子相互作用的动态纳米材料开辟了道路.
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