Imaging of collapsed fatty acid films at air-water interfaces.
In situ imaging ellipsometry is employed to monitor the morphology of collapsed films of fatty acid Langmuir monolayers on pure water and on CaCl2 solution. The ellipsometry images reveal the existence of multilayer domains in the collapsed region, and analysis of the images yields the thicknesses of these domains. The multilayer films formed on water are mainly trilayers, while those on CaCl2 solution are mainly bilayers. The structure of the collapsed films also changes sensitively depending on the history of compression of the molecular layer.
Seok
Sangjun
S
Department of Physics and Interdisciplinary Program of Integrated Biotechnology, Sogang University, Seoul, Korea.
Kim
Tae Jung
TJ
Hwang
Soon Yong
SY
Kim
Young Dong
YD
Vaknin
David
D
Kim
Doseok
D
D000388:Air; D002122:Calcium Chloride / Q000737:chemistry*; D004537:Eicosanoic Acids / Q000737:chemistry; D005227:Fatty Acids / Q000737:chemistry*; D008968:Molecular Conformation; D012996:Solutions / Q000737:chemistry; D013499:Surface Properties; D014867:Water / Q000737:chemistry*
D004537:Eicosanoic Acids; D005227:Fatty Acids; D012996:Solutions; D014867:Water; D002122:Calcium Chloride; C094477:arachidic acid