STRUCTURES OF MONOLAYERS OF LONG-CHAIN ALIPHATIC-ACIDS DEPOSITED ON METAL, CONDUCTING GLASS, AND NANOCRYSTALLINE SEMICONDUCTOR SUBSTRATES USING LANGMUIR-BLODGETT TECHNIQUES

The structures of monolayers of long-chain aliphatic carboxylic and ph osphonic acids deposited, using Langmuir-Blodgett techniques, on metal (silver and gold), conducting glass (fluorine-doped tin oxide), and n anostructured semiconductor (titanium dioxide) substrates have been st udied. In the course of these studies, the effects of pH, dissolved io ns, and conditioning regime on the structure of the monolayer present at the air/water interface have been examined. Also examined have been the effects of different deposition conditions and different substrat e materials on the structure of the deposited monolayer. These finding s represent an extension of such studies to molecules, namely, phospho nic acids, and substrates, namely, nanostructured TiO2 films, of incre asing scientific and technological importance.