经过结晶驱动的自组装,控制长度的圆柱状小粒,具有 π 结合的多烯核心
Sanjib K Patra1, Rumman Ahmed, George R Whittell
1School of Chemistry, University of Bristol, Bristol BS8 1TS, UK.
Journal of the American Chemical Society
|May 13, 2011
概括
研究人员创造了统一的,棒状的聚合物结构,称为纳米圆柱体. 这些自组装结构具有结晶的多3-基烯核心和多二甲基烯外,使用种子菌根实现控制的长度.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
背景情况:
- 块共聚合物自组装成各种纳米结构.
- 区域常规聚乙烯 (P3HT) 是一种具有晶体结构的半导体聚合物.
- 聚二甲基 (PDMS) 是一种惰性聚合物,通常用作软冠状.
研究的目的:
- 为了研究P3HT-b-PDMS块共聚物的溶液自组合.
- 为了实现控制的圆柱状粒与晶体核的形成.
- 为了准备特定长度的单分散纳米筒.
主要方法:
- 解决方案自组装的P3HT-b-PDMS块共聚合物.
- 使用种子小粒的结晶驱动自组装 (CDSA).
- 由此产生的纳米结构的表征.
主要成果:
- 形成具有晶体P3HT核心和PDMS冠状的圆柱状.
- 成功制备了具有可控长度的单分散纳米筒.
- 使用种子小作为精确长度控制的发起者来展示CDSA.
结论:
- 解决方案自组装提供了一条从块共聚合物到有序纳米结构的途径.
- CDSA是一种有效的策略,用于生产具有晶核的明确定义的纳米圆柱体.
- P3HT-b-PDMS系统为需要有序半导体纳米材料的应用提供了潜力.
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