通过离子和超分子纳入复合体切换圆柱状聚化刷的形态
Youyong Xu1, Sreenath Bolisetty, Matthias Ballauff
1Makromolekulare Chemie, Universität Bayreuth, D-954440 Bayreuth, Germany.
Journal of the American Chemical Society
|January 23, 2009
概括
当与二甲硫酸盐 (SDS) 复合时,多基化刷会崩成球体. 循环脱素 (CDs) 恢复了类似虫的形状,但添加亚达曼化会通过释放SDS而重新封装成球体.
科学领域:
- 超分子化学 超分子化学
- 聚合物科学 聚合物科学
- 合体和表面化学
背景情况:
- 聚化刷与酸二硫酸盐 (SDS) 等离子表面活性剂形成复合体.
- 这种复杂化诱导了从类似虫的形状变化到球形状态的形状变化.
- 超分子宿主-客人化学提供了控制这些相互作用的潜力.
研究的目的:
- 调查环极素 (CDs) 在调节与SDS复合的聚化刷的形状方面的作用.
- 探索使用竞争性客户来扭转CD介导的结构恢复.
主要方法:
- 准备圆柱形聚合刷的方法.
- 与二甲基硫酸盐 (SDS) 的复杂化.
- 添加alpha-和beta-cyclodextrins (CDs) 来观察结构变化. 添加alpha-和beta-cyclodextrins (CDs) 来观察结构变化. 添加alpha-和beta-cyclodextrins (CDs) 来观察结构变化.
- 引入1-adamantylammonium化物作为一个竞争性的客.
主要成果:
- SDS复杂化诱导了聚化刷的虫到球体的崩.
- 阿尔法和βCD都成功地通过SDS纳入复杂化将刷子恢复到类似虫的形状.
- 将1-adamantylammonium化物添加到β-CD系统中释放了SDS,导致刷子重新崩成球体.
结论:
- 环极素可以有效地逆转SDS诱导的聚化刷的崩.
- 客人对CD的结合性亲和力决定了聚化刷系统的结构反应.
- 该系统展示了使用超分子相互作用的聚合物刷的可调整形状控制.
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