D. Grandell et L. Murtomaki, SURFACE PRESSURE CONTROL OF PHOSPHOLIPID MONOLAYERS AT THE WATER 1,2-DICHLOROETHANE INTERFACE/, Langmuir, 14(2), 1998, pp. 556-559
We present a novel type of Langmuir trough which enables the study of
monolayers deposited at the immiscible liquid/liquid interface under c
ontrolled surface pressure. Isotherms of phospholipids have been obtai
ned both at the air/water and, for the first time, at the water/1,2-di
chloroethane interfaces. The latter isotherms did not show well-define
d plateau regions or phase transitions, probably due to the small size
of the 1,2-dichloroethane molecules, which makes them very mobile in
the surface phase. It was possible to keep the surface pressure of the
monolayers constant for at least 0.5 h, which means that they can be
used for electrochemical experiments, for example for the study of the
kinetics of charge transfer across such monolayers.