非添加剂混合物的自组装,含有具有可调节相互作用的不一致粒子
Isabela Quintela Matos1, Fernando A Escobedo1
1R. F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States.
The journal of physical chemistry. B
|October 5, 2023
概括
研究人员在纳米粒子 (NP) 系统中探索了非添加剂混合. 他们发现,具有可调节突起的特定纳米颗粒设计可以导致复杂的自我组装结构,如状腺和蜂阶段.
科学领域:
- 材料科学 材料科学 材料科学
- 体科学 体科学 体科学
- 纳米技术 纳米技术
背景情况:
- 纳米粒子 (NP) 与移植DNA的混合物提供可调节的选择性.
- 在NP系统中,非添加混合,即组件体积不相加的混合是罕见的.
- 缺乏对非添加剂NP混合物的系统研究.
研究的目的:
- 在不齐全的纳米粒子系统中研究非添加剂混合.
- 探索相位行为和非添加性之间的关系.
- 为受控自组装设计NP-NP交互.
主要方法:
- 平均力 (PMF) 的纳米粒子-纳米粒子潜力计算.
- 使用非添加参数量化非添加性.
- 模拟自组装一个补丁和两个补丁的NP混合物.
主要成果:
- 一次补丁的NP主要形成了叶片形态.
- 两个补丁的NP混合物表现出丰富的相位行为 (陀螺,圆柱体,蜂,分层晶体).
- 阶段行为取决于补丁-补丁角度和非添加性的程度.
结论:
- 在不一致的NP中可调节的突出使得可控的非添加性成为可能.
- 最小的正非添加性和多价值相互作用对于网络中相相至关重要.
- 这项工作为设计复杂的NP自组装提供了一个框架.
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