Shifts in chain-melting transition temperature of liposomal membranes by polymer-grafted lipids.

  title={Shifts in chain-melting transition temperature of liposomal membranes by polymer-grafted lipids.},
  author={Manuela Pantusa and Rosa Bartucci and Derek Marsh and Luigi Sportelli},
  journal={Biochimica et biophysica acta},
  volume={1614 2},
The chain-melting transition temperature of dipalmitoyl phosphatidylcholine (DPPC) bilayer membranes containing poly(ethylene glycol)-grafted dipalmitoyl phosphatidylethanolamine (PEG-DPPE) was determined by optical turbidity measurements. The dependence on content, Xp, of PEG-DPPE lipid was studied for different polar headgroup sizes, np, of the polymer lipid, throughout the lamellar phase of the mixtures with DPPC. Mean-field theory for the polymer brush regime predicts that the downward… CONTINUE READING
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