在区块共聚合物中控制纳米粒子位置
Julia J Chiu1, Bumjoon J Kim, Edward J Kramer
1Department of Chemical Engineering, University of California, Santa Barbara, California 93106, USA.
Journal of the American Chemical Society
|April 7, 2005
概括
研究人员开发了一种简单的方法,可以精确控制金纳米颗粒在聚合物薄膜中的位置. 通过调整表面涂层,金纳米颗粒可以被引导到特定的域或区块共聚合物的接口.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 聚合物化学 聚合物化学
背景情况:
- 块共聚合物自组装成有序的纳米结构.
- 控制这些结构中的纳米粒子放置对于先进的材料设计至关重要.
研究的目的:
- 开发一种简单的方法,将黄金纳米颗粒纳入聚乙烯-乙2乙烯二烯) 二块共聚合物.
- 为了证明控制金纳米颗粒在共聚物纳米领域内的空间分布.
主要方法:
- 在PS-PVP双块共聚合物中,将金纳米颗粒与结聚乙烯 (PS) 和/或聚2-乙烯 (PVP) 均聚合物合.
- 调节纳米粒子位置,通过改变金纳米粒子表面上的同聚合物联体的组成.
主要成果:
- 涂上纯PS或纯PVP的金纳米粒子被定位在各自的聚合物领域内.
- 在PS和PVP领域之间的接口上发现了涂有PS和PVP连接体混合物的金纳米粒子.
结论:
- 纳米颗粒的表面化学决定了它们在区块共聚合物纳米结构中的定位.
- 这种方法提供了对纳米粒子放置的精确控制,使得功能纳米复合材料的创造成为可能.
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