期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 15, 期 34, 页码 8586-8592出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.200900885
关键词
electron microscopy; ion pairs; molecular dynamics; nanostructures; self-assembly
资金
- Deutsche Forschungsgemeinschaft
- Sonderforschungsbereich SFB 583 [BO 1000/6-1, HI 468/13-2]
- State of Bavaria (Interdisciplinary Center for Molecular Materials)
We show by molecular-dynamics (MD) simulations and cryo-transmission electron microscopy (cryo-TEM) experiments that the size and form of structurally persistent micelles formed by the T-shaped amphiphile 1 are controlled by the counterions. The two techniques reveal that the micelles are specifically stabilized by sodium counterions relative to potassium ions. Both the simulations and the cryo-TEM experiments suggest that the micelles are stabilized by strongly conserved hydrated contact ion pairs with sodium counterions but not with potassium ions. We suggest that the TEM is observing local high density due to hydrated carboxylate/sodium ion pairs at the surface of the micelle. A high concentration of such structures is found in MD simulations with sodium counterions, but not with potassium.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据