频率依赖微电泳研究具有调整表面电荷的体
Ashish Joy1, Shivani Semwal1, Anand Yethiraj1
1Department of Physics and Physical Oceanography, Memorial University, St. John's, NL A1B 3X7, Canada.
The journal of physical chemistry letters
|April 3, 2024
概括
我们探索了非水性聚甲基酸 (PMMA) 合体悬浮液的复杂静电学. 我们的微电泳研究揭示了离子度如何改变粒子电荷,并表明了多离子形成.
科学领域:
- 体科学是关于体的科学.
- 物理化学 物理化学
- 材料科学是一种材料科学.
背景情况:
- 非水性聚甲基酸 (PMMA) 合物悬浮剂对于研究合物自我组装至关重要.
- 它们的静电特性是复杂的,并且在很大程度上没有被研究过.
- 标准电泳在这些系统中受到折射率匹配的阻碍.
研究的目的:
- 为了研究PMMA合物在特定非水性溶剂中的静电特性.
- 测量粒子电荷作为盐度的函数.
- 探索电双层和离子表面相互作用的动态.
主要方法:
- 使用基于显微镜的微电泳.
- 测量是在直流和变频交流电场中进行的.
- PMMA合物被悬浮在环基化物和 cis-trans 脱中.
主要成果:
- 发现体电荷取决于盐度.
- 在0.35μM盐度附近观察到电荷逆转.
- 频率依赖的移动性提供了对电双层极化和曼宁凝结的洞察.
结论:
- 溶液离子积极改变PMMA合体表面.
- 有证据表明,发生了曼宁凝结和聚离子形成.
- 微电泳是研究这些系统的可行技术,尽管折射率匹配.
相关概念视频
Capillary Electrophoresis: Applications
395
Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
395
Capillary Electrophoresis: Instrumentation
230
Capillary electrophoresis instrumentation typically consists of several key components. A high-voltage power supply generates the electric field necessary for the separation by connecting to an anode (the positively charged electrode) and a cathode (the negatively charged electrode) located in buffer reservoirs at each end of the capillary tube. The system includes a sample vial, a fused silica capillary tube coated with polyimide for mechanical strength through which the sample components...
230
Electrophoresis: Overview
2.0K
Electrophoresis is a powerful analytical separation technique that relies on the differential migration of charged species when subjected to an electric field. The core strength of electrophoresis lies in its ability to separate high-molecular-weight species in complex mixtures. It has found widespread use in biochemistry, molecular biology, and analytical chemistry, allowing the separation of compounds like amino acids, nucleotides, carbohydrates, and proteins with excellent resolution.
There...
There...
2.0K


