重要的是外观:动态表面的化学和物理控制
Sarah M Brosnan1, Andrew H Brown, Valerie Sheares Ashby
1Department of Chemistry, University of North Carolina at Chapel Hill, 131 South Road, Chapel Hill, North Carolina 27510-3290, USA.
Journal of the American Chemical Society
|January 17, 2013
概括
研究人员开发了一种新的形状记忆聚合物系统. 这种材料允许对高级应用的表面几何和化学功能进行远程,可调节的控制.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 表面工程是什么?表面工程是什么?
背景情况:
- 动态控制表面化学和地形对于先进的材料应用至关重要.
- 现有的材料往往缺乏远程和可逆地改变表面几何和化学性能的能力.
- 形状记忆聚合物为动态结构变化提供了潜力,但需要与表面功能化方法集成.
研究的目的:
- 设计和合成一种新的可功能化形状记忆聚合物系统.
- 为了证明对表面几何形状和化学功能的远程可调节控制.
- 探索形状记忆效应与点击化学的集成,以实现多功能表面修改.
主要方法:
- 将含有亚酸的单体纳入形状记忆聚合物骨干中.
- 利用形状记忆效应,在多个长度尺度 (>1mm到100nm) 上诱导表面几何的物理变化.
- 采用铜辅助的点击化学方法,将各种分子对化物功能化表面进行共价附着.
主要成果:
- 成功合成了一种含有亚基组的形状记忆聚合物.
- 由温度引发的可调整表面几何变化的演示.
- 通过点击化学实现的多功能表面功能化,产生各种各样的表面特性.
- 在特定的过渡温度下,材料在几何和功能上都表现出受控的变化.
结论:
- 开发的系统提供了前所未有的对表面属性的远程控制.
- 这项技术使材料表面能够为量身定制的应用程序进行动态适应.
- 形状记忆聚合物和点击化学的组合为先进的功能材料提供了一个强大的平台.
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