COMPREHENSIVE STRUCTURE INVESTIGATION OF LANGMUIR-BLODGETT-FILMS OF DISC-SHAPED MOLECULES

The structure of mono- and multilayers of amphiphilic disc-shaped pent aynes was investigated by Brewsterangle microscopy, X-ray specular ref lection and grazing incidence diffraction (GID). X-ray specular reflec tion experiments confirm the ''edge on'' arrangement of the molecular discs. The molecular modelling of the Langmuir-Blodgett (LB)-multilaye rs predicts a columnar in-plane packing of the molecules. A GID experi ment with monochromatic synchrotron radiation was used to verify the p redicted multilayer structure on molecular level, while the Brewsteran gle microscopy gave a deeper insight in the monolayer in-plane structu re on micron scale.