Solid monolayers of fluorocarbons adsorbed on graphite from liquids

Calorimetry data from four perfluoroalkanes adsorbed on graphite is presented that indicates the formation of solid monolayers. This is supported by neutron diffraction measurements from an n-perfluorododecane monolayer on graphite. A monolayer crystal structure has been proposed for the perfluorododecane layer which is seen to be related to that of the C12 alkane, dodecane.