Vibrational spectroscopic investigation of the phase diagram of a biomimetic lipid monolayer.
The phase behavior of a biomimetic monolayer consisting of diphospholipid molecules on water is investigated using vibrational sum-frequency generation and fluorescence microscopy. In addition to the transition from the-molecularly disordered-liquid phase to the highly ordered and oriented con-densed phase, a novel, extremely sharp transition is observed at low compression, which is attributed to the uncurling of the hydrophobic alkane chains upon compression.
Roke
Sylvie
S
Leiden Institute of Chemistry, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
Schins
Juleon
J
Müller
Michiel
M
Bonn
Mischa
M
D015060:1,2-Dipalmitoylphosphatidylcholine / Q000737:chemistry*; D040761:Biomimetic Materials / Q000737:chemistry*; D002462:Cell Membrane / Q000737:chemistry; D008567:Membranes, Artificial; D008856:Microscopy, Fluorescence; D010743:Phospholipids / Q000737:chemistry*; D013057:Spectrum Analysis / Q000379:methods; D013499:Surface Properties
D008567:Membranes, Artificial; D010743:Phospholipids; D015060:1,2-Dipalmitoylphosphatidylcholine