使用自动化染色分离快速生成区块共聚物库
Journal of the American Chemical Society
|May 19, 2020
概括
这项研究引入了一种新的染色学方法,用于从单一母材料中快速创建多样化的块共聚物库. 这种方法增强了构成分辨率,并简化了块共聚合物相位空间的探索.
科学领域:
- 聚合物化学
- 材料科学
- 化学工程
背景情况:
- 区块共聚物对先进材料至关重要,但为相图探索创建多样化的库是具有挑战性的.
- 传统方法需要合成许多单个块共聚物,这耗时且资源密集.
研究的目的:
- 为快速生成区块共聚物库开发一种多功能且可扩展的策略.
- 简化在各种组成,单体对和分子重量中探索块共聚物相空间.
- 研究分散性对块共聚物的自组和形态的影响.
主要方法:
- 使用自动化和操作简单的染色分离.
- 将该技术应用于多重克尺度上的各种块共聚物化学物质.
- 与传统方法相比,生成了具有更高分辨率的相位图.
主要成果:
- 在生成的块共聚物库中实现了优异的质量回收和高组成分辨率.
- 证明了该技术适用于广泛的块共聚物类型和分子重量 (高达50,000 amu).
- 由于染色图库的均性增加和分散性降低,观察到顺序过渡和形态的差异.
结论:
- 报告的染色分离策略显著简化了块共聚物相位空间的探索.
- 这种方法可以产生具有增强控制和同质性的块共聚物材料.
- 这些发现突显了分散在块共聚物自组装和材料特性中的关键作用.
相关概念视频
01:24Characteristics and Nomenclature of Copolymers
3.1K
Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
3.1K
00:57Cationic Chain-Growth Polymerization: Mechanism
2.7K
The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the...
2.7K