自限定向纳米粒子结合受反应固态度控制
Chenglin Yi1, Hong Liu2, Shaoyi Zhang3
1State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China.
Science (New York, N.Y.)
|September 11, 2020
概括
研究人员开发了一种高产纳米粒子集群或体分子 (CM) 的新方法. 这种技术使用互补的聚合物进行自我限制的结合,使其能够在先进的纳米结构中进行可编程组织.
科学领域:
- 体和表面科学
- 纳米材料工程
- 超分子化学
背景情况:
- 体分子 (CMs) 模仿原子结构,但它们的高产合成具有挑战性.
- 具有特定表面相互作用的不一致的纳米粒子是形成CM的关键.
- 目前的方法往往难以有效和可控的组装.
研究的目的:
- 开发一种高产率的方法来产生具有分子样构的纳米粒子集群.
- 使这些集群可编程成等级纳米结构.
- 弥合原子级共价键和更大的体键之间的差距.
主要方法:
- 使用配套反应性聚合物覆盖的纳米粒子.
- 诱导连接体外重组和自我限制的结合反应.
- 使用静电排斥来控制合键的对称性.
主要成果:
- 通过一种新的自组合机制实现了高产量的体分子生成.
- 通过聚合物固体测量来证明自我限制的纳米粒子结合.
- 展示了CM的可编程组织成等级纳米结构.
- 使用体键之间的静电排斥来控制CM对称性.
结论:
- 开发的方法为纳米材料制造提供了重大进步.
- 这种方法可以精确控制复杂的纳米结构的组装.
- 它提供了一个可扩展的途径,用于创建具有可调节性质的先进的体材料.
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