Long-Range Interaction Forces between Polymer-Supported Lipid Bilayer Membranes.
Long-Range Interaction Forces between Polymer-Supported Lipid Bilayer Membranes.
复制标题
聚合物支持的脂质双层膜之间的长程相互作用力。
DOI：
10.1021/la0103012
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Israelachvili,JacobN
中科院分区：
文献类型：
--
作者：
Seitz,Markus;Park,ChadK;Wong,JoyceY;Israelachvili,JacobN
许多近程力和结构的软支持DMPC双层已经描述了以前。然而，测量的力-距离分布的一个有趣的特征仍然无法解释，那就是在固体云母衬底表面的刚性支撑双层之间没有观察到的远距离指数衰减排斥力的存在。本文根据最近的静态和动态表面力实验详细讨论了这一观察结果。在中间距离（云母-云母之间的距离从15到40 nm）中，斥力不是由于双层之间的静电力，而是由于下层软聚电解质层的压缩（膨胀），这可以被认为是一个模型细胞骨架。实验数据可以用简单的聚合物相互作用理论模型拟合，并由此推导出聚合物层的弹性性能。
Much of the short-range forces and structures of softly supported DMPC bilayers has been described previously. However, one interesting feature of the measured force−distance profile that remained unexplained is the presence of a long-range exponentially decaying repulsive force that is not observed between rigidly supported bilayers on solid mica substrate surfaces. This observation is discussed in detail here based on recent static and dynamic surface force experiments. The repulsive forces in the intermediate distance regime (mica−mica separations from 15 to 40 nm) are shown to be due not to an electrostatic force between the bilayers but to compression (deswelling) of the underlying soft polyelectrolyte layer, which may be thought of as a model cytoskeleton. The experimental data can be fit by simple theoretical models of polymer interactions from which the elastic properties of the polymer layer can be deduced.
双层脂膜（BLM）：理论与实践
DOI：
--
发表时间：
1974
期刊：
影响因子：
--
作者：
H. Tien
通讯作者：
H. Tien