铁化物纳米颗粒的无模板层次自组装成中等尺度的
Dawei Deng1, Changlong Hao2, Soumyo Sen3
1School of Life Science and Technology, and State Key Laboratory of Natural Medicines, China Pharmaceutical University , Nanjing 210009, P. R. China.
Journal of the American Chemical Society
|October 11, 2017
概括
研究人员将铁化物纳米颗粒自组装成像纳米板和刺这样的复杂纳米结构. 十二乙醇的度控制了组合,证明了与生物系统相似的无机形态发生.
科学领域:
- 材料科学
- 纳米技术
- 无机化学
背景情况:
- 半导体纳米粒子 (NP) 已知可以自组装.
- 简单多分散的NP可以实现的复杂性仍然是一个活跃的研究领域.
- 了解NP组装是设计先进纳米材料的关键.
研究的目的:
- 为了研究圆盘状铁化物 (FeSe2) NPs的自组.
- 探索反应条件如何影响复杂纳米结构的形成.
- 为了证明创造生物上可比的无机结构的潜力.
主要方法:
- 主要FeSe2NP的合成 (∼2-4nm).
- 在不同度的多德卡尼醇 (DT) 溶液中进行自控自组.
- 由此产生的纳米结构 (纳米片和刺) 的表征.
- 模拟分子动力学以了解NP表面特性和组装机制.
主要成果:
- 自组装成单晶纳米片 (厚度∼5.5 nm) 或中等尺度刺 (直径∼550 nm) 的FeSe2NP.
- 的尖由卷卷组成的纳米片.
- 组装路径 (纳米片与刺) 是由DT度决定的,影响NP表面不对称性.
- 模拟显示了FeSe2NP的移动边缘原子和不对称的基底表面.
结论:
- 在DT度的指导下,FeSe2NP的自组合会产生复杂的无机上层结构.
- 实现的形态发生与没有模板的生物组合复杂性相美.
- 在催化,药物输送,光学和能量储存方面,
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