CHEMISORPTION OF DICARBOXYLIC-ACIDS ON AN SI(111) SURFACE AND SUBSEQUENT CHEMICAL-REACTIONS AT THE SURFACE OF ADSORBED MOLECULAR LAYERS

Adsorption of dicarboxylic acids [2-(trifluoromethyl)terephthalic acid and alpha,omega-dicarboxyperfluoroalkanes] from a solution onto a flu orine-terminated silicon(lll) [Si(lll)] surface was examined. X-ray ph otoelectron spectroscopy and Fourier transform infrared attenuated tot al reflection revealed that one carboxyl end covalently bonds to the S i surface, and the other end is exposed at the monolayer-air or monola yer-liquid interface. The reactivity of exposed carboxyl groups in the monolayer was confirmed by the fact that the surface species can be c onverted to chloroformyl groups by chlorination reagents.