Impact of membrane fluidity on steric stabilization by lipopolymers.

  title={Impact of membrane fluidity on steric stabilization by lipopolymers.},
  author={Raquel Orozco-Alcaraz and Tonya L. Kuhl},
  journal={Langmuir : the ACS journal of surfaces and colloids},
  volume={28 19},
In this work, the impact of lipid lateral mobility on the steric interaction between membranes containing poly(ethylene glycol) (PEG) functionalized lipids was investigated using the surface force apparatus. The force-distance profiles show the presence of electrostatic and steric repulsion that arise from the presence of negatively charged PEG functionalized lipids. Fluid-phase bilayers have high lateral diffusion relative to gel-phase bilayers; however, a quantitative comparison of the… CONTINUE READING