毛的 (f星) 和DNA移植的纳米立方体的自组装和结晶
Christopher Knorowski1, Alex Travesset
1Department of Physics and Astronomy and Ames Laboratory, Iowa State University , Ames, Iowa 50011, United States.
Journal of the American Chemical Society
|December 12, 2013
概括
研究人员开发了一种使用"毛的"纳米立方体来控制纳米粒子自组装成有序结构的方法. 这一突破使得能够创建具有定制光学和机械性能的先进纳米材料.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 化学工程是化学工程的重要组成部分.
背景情况:
- 纳米粒子超级网对于开发具有独特光学,机械和催化性能的先进材料至关重要.
- 由无环形 (非球形) 纳米粒子组成的超级网格对于这些应用特别重要.
- 利用这些材料的一个主要障碍是控制异型纳米颗粒的自我组装到所需的结构.
研究的目的:
- 研究一种用于编程异型纳米粒子以自我组装成有序阶段的一般框架.
- 探索DNA移植纳米立方体的潜力,以指导纳米粒子自我组装.
- 确定可实现的有序阶段类型及其对材料工程的相关性.
主要方法:
- 使用数值模拟来建模自组装过程.
- 研究"毛" (f星) 或DNA移植纳米立方体的行为.
- 分析晶体,液晶,旋转器和非晶体相的形成.
主要成果:
- 证明"毛"或DNA移植的纳米立方体可以将自我组装引导到各种有序的阶段.
- 在组装的超级网格中实现了长距离的位置和方向顺序.
- 确定了包括晶体,液晶和旋转器相在内的特定阶段.
结论:
- "毛的"纳米立方体提供了一个多功能平台,用于编程自组装异型纳米粒子.
- 实现的有序相对于工程纳米材料和微材料具有精确的定向控制具有重要意义.
- 这种方法促进了干燥纳米粒子超级网的实现,并推进了编程自组装领域.
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