PREPARATION AND CHARACTERISTICS OF PERFLUORODIACETYLENE LANGMUIR-BLODGETT-FILMS

The surface pressure-area curve for the novel perfluorodiacetylene, C2 4F42, showed that a monolayer was formed on the surface of the water. The monolayer was deposited on KRS-5, Al and quartz plates by the Lang muir-Blodgett (LB) technique. The LB film on the KRS-5 plate showed ex cellent water repellency with a contact angle of 162 degrees. Comparis on of the reflection-absorption and transmission i.r. spectra showed t hat the difluoromethylene chains in the C24F42 LB film were oriented p erpendicular to the substrate surface. The C24F42 LB film on the quart z plate was polymerized by u.v. irradiation giving a highly electrocon ductive film without doping or further treatment. (C) 1998 Elsevier Sc ience Ltd. All rights reserved.