On the wettability of lipid DPPC films.
By employing temperature-programmed desorption and time-of-flight secondary ion mass spectroscopy, the adsorption of water on the hydrophilic and hydrophobic surfaces of a lipid (DPPC) film has been investigated. It could be shown that it is possible to prepare lipid films ex situ with a preferential orientation of the lipid molecules on a solid support and to retain their specific properties under ultrahigh vacuum conditions. The water adsorption and desorption kinetics on the hydrophilic and hydrophobic surfaces provided by a lipid film are discussed in terms of their structural and chemical properties.
Günster
Jens
J
Laser Application Center, Clausthal University of Technology, D-38678 Clausthal-Zellerfeld, Germany. jens.guenster@tu-clausthal.de
Souda
Ryutaro
R
D015060:1,2-Dipalmitoylphosphatidylcholine / Q000737:chemistry*; D000327:Adsorption; D007700:Kinetics; D008051:Lipid Bilayers / Q000737:chemistry*; D018629:Spectrometry, Mass, Secondary Ion; D014867:Water; D017155:Wettability
D008051:Lipid Bilayers; D014867:Water; D015060:1,2-Dipalmitoylphosphatidylcholine