Effect of the fluorination degree of hydrophobic chains on the monolayer behavior of unsaturated diacylphosphatidylcholines bearing partially fluorinated 9-octadecynoyl (stearoloyl) groups at the air-water interface

- Partially fluorinated diacyl-PCs with CC bonds form monolayers of liquid character.
- Hydrophobic chain with CC bond is more hydrophilic than that with CC bond.
- Lengthening of fluorinated chains (F-chains) in PC increases monolayer stability.
- Terminal short F-chains in PC tend to weaken the lipid-lipid aggregation.
- PCs with short F-chains adopt a flatly-lying conformation at large molecular areas.