Hydrophobic properties have been investigated on chemically adsorbed monolayers which were formed on glass surfaces from perfluoroalkyl trichlorosilane solutions. The hydrophobic properties of the monolayers on the glass were estimated by measuring static and dynamic contact angles. The monolayers were hydrophobic as highly as polytetrafluoroethylene. The glass surfaces were found to be modified into hydrophobicity with only a monolayer of Perfluoroalkyl compounds without lowering the transparency of the glasses.
