通过分子多价值的系统级控制指导纳米粒子组装
Peter J Santos1, Zhen Cao1, Jianyuan Zhang1
1Department of Materials Science and Engineering , Massachusetts Institute of Technology , 77 Massachusetts Avenue , Cambridge , Massachusetts 02139 , United States.
Journal of the American Chemical Society
|August 30, 2019
概括
研究人员设计了聚合物涂层的纳米粒子来控制分子相互作用和纳米级结构. 这种方法通过对先进的纳米材料合成进行多价值编程,使复杂的人造材料的精确设计成为可能.
科学领域:
- 材料科学
- 超分子化学
- 纳米技术
背景情况:
- 纳米粒子组装依赖于表面连接体之间的多价值结合相互作用.
- 控制这些相互作用对于设计复杂的纳米架构至关重要.
- 自然系统展示了分子排列如何影响结合热力学,但人工系统缺乏量化例子.
研究的目的:
- 展示纳米尺度几何如何合理调节人造系统中的分子结合热力学.
- 探索纳米级设计特征的使用,以调节纳米材料合成的分子结合.
- 通过超分子结合和纳米尺度结构驱动的聚合物涂层纳米粒子中研究新出现的现象.
主要方法:
- 开发一种聚合物涂层的纳米粒子材料.
- 使用超分子结合和纳米结构来决定多价值相互作用热力学.
- 观察超分子结合组的出现.
- 通过中等尺度粒子排列控制超级晶格对称性.
主要成果:
- 由单独的分子结构无法预测的超分子结合组的出现.
- 通过粒子排列来改变超分子结合热力学, 展示了可控的超晶格对称性.
- 建立了纳米尺度几何,超分子结合和新兴材料特性之间的联系.
结论:
- 通过系统层面的方法理性地编程分子多价值是组装复杂的人工结构的重大进步.
- 这项工作对以纳米粒子和超分子为基础的材料的未来设计有影响.
- 通过纳米尺度几何学和分子相互作用控制纳米材料合成的新设计手柄.
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